A well-fabricated piping spool helps reduce installation time, improves dimensional accuracy and simplifies site work during plant construction and maintenance. Instead of assembling individual pipes, flanges and fittings at the project location, prefabricated piping spools arrive ready for installation, allowing faster project execution with better quality control.
ARK Stainless Inc. is a manufacturer, supplier and exporter of Piping Spools in India, fabricating carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloy, titanium and copper-nickel piping spools for industrial piping systems. Every spool is manufactured according to approved fabrication drawings and project specifications using qualified welding procedures, ensuring proper alignment, dimensional accuracy and reliable field installation.
Our fabrication capability covers pipe spools with elbows, tees, reducers, flanges, branch connections, valves, supports, vents, and drain connections for new projects, plant expansions and shutdown maintenance requirements. Depending on project specifications, we manufacture piping spools in seamless or welded construction with flange ends, bevel ends, threaded ends or custom end preparations.
We fabricate piping spools in Stainless Steel 304, 304L, 316, 316L, 317L, 321, 347 and 904L, Carbon Steel ASTM A106 Gr. B, ASTM A53 and ASTM A234 WPB, Alloy Steel P5, P9, P11, P22 and P91, Duplex 2205, Super Duplex 2507, Titanium Grades 2 & 5, Copper Nickel 90/10 & 70/30, Inconel, Monel, Hastelloy, Incoloy, Nickel Alloy 200/201 and other project-specific materials.
Our piping spools are supplied for oil & gas plants, refineries, petrochemical facilities, chemical processing units, power plants, offshore platforms, desalination plants, pharmaceutical industries, water treatment plants, marine piping systems, fertiliser plants, pulp & paper mills and industrial process piping projects where fabrication quality and dimensional accuracy are essential.
Every piping spool can be supplied with Material Test Certificates (EN 10204 3.1), weld maps, PMI reports, hydrostatic testing, dimensional inspection reports, NDT documentation and third-party inspection whenever required by the project specification.
A Piping Spool is a pre-fabricated section of a piping system that is manufactured in a fabrication workshop before being transported to the project site for installation. A typical pipe spool consists of pipes, elbows, tees, reducers, flanges, branch connections, valves and other piping components assembled according to approved isometric drawings. Since fabrication is completed under controlled workshop conditions, the finished spool arrives ready for fit-up, welding or bolting at the installation site.
Prefabricated piping spools are widely used because they reduce site fabrication work, improve dimensional accuracy and help shorten project schedules. Instead of assembling every component in the field, contractors receive completed spool assemblies that can be installed directly, reducing labour requirements and minimising delays during construction.
Piping spools are manufactured for a wide range of industries, including oil & gas, petrochemical, refineries, power generation, chemical processing, fertiliser plants, pharmaceuticals, offshore platforms, marine installations, desalination plants, water treatment facilities and industrial process piping systems. Depending on the operating conditions, they can be fabricated in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloys, titanium and copper-nickel materials.
Every piping spool is manufactured according to project specifications covering pipe size, wall thickness, pressure rating, material grade, welding procedure and inspection requirements. Depending on the application, pipe spools can be supplied with flange ends, bevel ends, threaded connections, grooved ends or other custom end preparations to match the piping system. Fabrication may also include supports, vents, drains, lifting lugs, reinforcement pads and other accessories specified on the project drawings.
For EPC contractors, fabrication companies and industrial project owners, prefabricated piping spools offer better quality control, faster installation and improved consistency across large piping networks. They also simplify inspection, testing and documentation before dispatch, helping reduce rework during site installation.
ARK Stainless Inc. manufactures piping spools in a wide range of materials, sizes and configurations to suit different industrial piping systems. Every pipe spool is fabricated according to approved drawings, isometric layouts and project specifications, helping reduce fabrication work at the site while improving installation efficiency. We manufacture pipe spools for new projects, plant expansions, shutdown maintenance and replacement requirements across process industries.
Our manufacturing range includes straight pipe spools, flanged pipe spools, welded pipe spools, elbow spools, tee spools, reducer spools, valve spools, instrument pipe spools, equipment connection spools and custom fabricated piping spools. Depending on project requirements, the spools can be supplied with flanges, forged fittings, butt-weld fittings, valves, supports, drains, vents and other welded components ready for installation.
We manufacture Carbon Steel Piping Spools, Stainless Steel Piping Spools, Alloy Steel Piping Spools, Duplex Steel Piping Spools, Super Duplex Pipe Spools, Nickel Alloy Piping Spools, Inconel Pipe Spools, Monel Pipe Spools, Hastelloy Pipe Spools, Titanium Pipe Spools and Copper Nickel Pipe Spools for low, medium and high-pressure applications.
Each fabricated piping spool is produced using qualified welding procedures and undergoes dimensional inspection throughout the manufacturing process. Depending on project specifications, we can also provide hydrostatic testing, PMI testing, radiography, ultrasonic testing, dye penetrant testing, surface finishing, pickling and passivation, along with complete material traceability and inspection documentation.
Straight pipe spools consist of a pipe section with the required end connections and are commonly used between equipment, vessels and process lines. These spools are widely installed in utility piping, water distribution systems, process plants and pipeline projects.
Flanged piping spools are fabricated with welding neck, slip-on, blind, socket weld or threaded flanges to simplify installation and future maintenance. They are commonly used where piping systems require periodic dismantling, equipment replacement or flange-to-flange connections.
Elbow spools incorporate one or more elbows to change the direction of flow while maintaining proper alignment throughout the piping system. These assemblies are widely used in process piping, offshore installations, refineries and power generation projects.
Pipe spools with tees, branch outlets and reducing branches are manufactured for systems requiring multiple flow paths or equipment connections. These assemblies are commonly supplied for process units, utility piping, instrumentation networks and chemical processing plants.
Valve spools are supplied with manually operated or automated valves assembled within the spool to reduce installation time at the site. Depending on project requirements, the assembly may include gate valves, globe valves, ball valves, check valves, butterfly valves or control valves.
Reducer spools are fabricated where the pipe diameter changes within the piping network. These assemblies provide a smooth transition between different pipe sizes while maintaining the required flow characteristics and pressure requirements.
Many industrial projects require piping assemblies designed specifically for plant layouts. We manufacture custom pipe spools according to approved fabrication drawings, isometric sketches and client specifications, including special branch connections, supports, vents, drains, instrument connections, lifting lugs and customised end preparations. Every assembly is checked for dimensional accuracy before dispatch to ensure easier installation on-site.
Selecting the right material is one of the most important considerations when fabricating a piping spool. The operating pressure, temperature, process fluid and service environment all influence the material selection. At ARK Stainless Inc., we manufacture piping spools in a wide range of ferrous and non-ferrous materials to meet the requirements of refineries, petrochemical plants, power stations, offshore platforms, chemical processing facilities and other industrial piping projects.
Our fabrication facility produces Carbon Steel Piping Spools, Stainless Steel Piping Spools, Alloy Steel Piping Spools, Duplex Steel Piping Spools, Super Duplex Steel Piping Spools, Nickel Alloy Piping Spools, Titanium Piping Spools, Copper Nickel Piping Spools, Monel Piping Spools, Inconel Piping Spools, Hastelloy Piping Spools and Incoloy Piping Spools in accordance with international material specifications and project requirements.
We fabricate stainless steel piping spools in ASTM A312, ASTM A358 and ASTM A778 pipe specifications using grades including SS 304, SS 304L, SS 316, SS 316L, SS 317L, SS 321, SS 347 and SS 904L. Stainless steel spools are widely used in chemical processing, pharmaceutical manufacturing, food processing, water treatment and general process piping where corrosion resistance and long service life are required.
Carbon steel piping spools are manufactured using ASTM A106 Grade B, ASTM A53, ASTM A234 WPB and ASTM A105 materials for utility piping, steam lines, fire protection systems, oil & gas projects and industrial process applications. Carbon steel remains one of the most widely used materials where strength, weldability and cost-effectiveness are important.
For elevated temperature and high-pressure service, we fabricate alloy steel piping spools in ASTM A335 P5, P9, P11, P22 and P91 grades. These materials are commonly specified for power plants, boilers, refineries, thermal processing units and steam distribution systems operating under demanding conditions.
We manufacture piping spools in Duplex 2205 (UNS S31803 / S32205) and Super Duplex 2507 (UNS S32750 / S32760) for applications involving seawater, chlorides and aggressive process fluids. These materials are widely used in offshore platforms, desalination plants, marine installations and chemical processing facilities where high strength and corrosion resistance are equally important.
For severe corrosion service, we fabricate piping spools in Nickel 200, Nickel 201, Inconel 600, Inconel 625, Inconel 800, Inconel 825, Monel 400, Monel K500, Hastelloy C22, Hastelloy C276, Alloy 20 and other high-performance nickel alloys. These materials are commonly selected for chemical processing plants, offshore facilities, fertiliser units and high-temperature process piping.
Titanium Grade 2, Titanium Grade 5, Copper Nickel 90/10 and Copper Nickel 70/30 piping spools are supplied for marine systems, desalination plants, seawater cooling circuits and offshore applications where long-term corrosion resistance is critical. These materials perform well in saltwater environments and are frequently specified for coastal and marine infrastructure projects.
| Material | Standard | Available Grades | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||
| Stainless Steel | ASTM A312 / A358 / A778 | 304 | 304L | 316 | 316L | 317L | 321 | 347 | 904L | ||
| ASTM A790 / A928 | Duplex 2205 | Super Duplex 2507 | |||||||||
| Alloy Steel | ASTM A335 | P1 | P5 | P9 | P11 | P22 | P91 | ||||
| ASTM A106 / A53 | Grade A | Grade B | Grade C | WPHY 42 | WPHY 46 | WPHY 52 | WPHY 60 | WPHY 65 | WPHY 70 | ||
| Nickel Alloy | ASTM B161 / B163 | Nickel 200 | Nickel 201 | Inconel 600 | Inconel 625 | Inconel 800 | Inconel 825 | Hastelloy C22 | Hastelloy C276 | Monel 400 | |
| ASTM B338 / B466 | Titanium Gr.2 | Titanium Gr.5 | Cu-Ni 70/30 | Cu-Ni 90/10 | |||||||
| High Nickel Alloys | ASTM B163 / B333 / B622 / B564 | Nickel 200 | Nickel 201 | Alloy 20 | Incoloy 800 | Incoloy 825 | Monel 400 | Monel K500 | Hastelloy C22 | Hastelloy C276 | |
| Inconel | ASTM B163 / B167 / B564 | Inconel 600 | Inconel 601 | Inconel 625 | Inconel 718 | Inconel 800 | Inconel 825 | ||||
| Titanium | ASTM B348 / B381 / B861 | Grade 1 | Grade 2 | Grade 5 | Grade 7 | Grade 9 | Grade 12 | ||||
| Monel | ASTM B564 / B865 | Monel 400 | Monel K500 | ||||||||
| Hastelloy | ASTM B622 / B619 / B564 | Hastelloy C22 | Hastelloy C276 | Hastelloy B2 | Hastelloy X | ||||||
| Duplex & Super Duplex SS | ASTM A790 / A815 / A182 | Duplex 2205 | Duplex 2304 | Super Duplex 2507 | Super Duplex Zeron 100 | UNS S32750 | UNS S32760 | UNS S31803 | |||
| Spool No. | Material | Pipe Size (NPS) | Wall Thickness (mm) | Length (mm) | Weight (kg) | Joint Type | Weld Type | Chemical Composition (%) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | Cr | Ni | Other | ||||||||
| SP001 | Stainless Steel (304L) | 6” | 4.78 | 1500 | 45.6 | Butt Weld | GTAW | =0.03 | 2.00 | 18-20 | 8-10 | Si: 1.00 |
| SP002 | Carbon Steel (ASTM A106 Gr. B) | 8” | 6.35 | 2000 | 78.2 | Flanged | SMAW | =0.30 | 1.20 | - | - | Fe: Balance |
| SP003 | Duplex Steel (UNS S32205) | 10” | 9.27 | 2500 | 120.5 | Socket Weld | GTAW | =0.03 | 2.00 | 21-23 | 4.5-6.5 | Mo: 2.5-3.5 |
| SP004 | Super Duplex Steel (UNS S32750) | 12” | 10.31 | 3000 | 180.8 | Butt Weld | SMAW | =0.03 | 1.20 | 24-26 | 6-8 | Mo: 3-4.5 |
| SP005 | Nickel Alloy (Monel 400) | 6” | 7.11 | 1800 | 85.3 | Flanged | GTAW | =0.30 | 2.00 | - | Balance | Cu: 28-34 |
| Spool Number | Pipe Size (Inch) | Pipe Length (mm) | End Connection | Fitting Details | Weld Type | Material Specification | Weight (kg) | ||
|---|---|---|---|---|---|---|---|---|---|
| Elbow | Tee | Reducer | |||||||
| SP-001 | 6" | 1500 | Flanged | 2 x 90° (SCH 40) | - | - | Butt Weld | ASTM A106 Gr. B | 35 |
| SP-002 | 8" | 1800 | Butt Weld | 1 x 45° (SCH 80) | 1 x Tee | - | Butt Weld | ASTM A53 Gr. B | 48 |
| SP-003 | 10" | 2000 | Flanged | - | 1 x Tee | 1 x 10" x 6" | Butt Weld | ASTM A106 Gr. B | 62 |
| SP-004 | 12" | 2200 | Socket Weld | 2 x 90° (SCH 40) | - | 1 x 12" x 8" | Butt Weld | ASTM A333 Gr. 6 | 80 |
| Material | Grade | Pressure-Temperature Ratings (PSI) | Standard | ||||
|---|---|---|---|---|---|---|---|
| -20°F to 100°F | 200°F | 400°F | 600°F | 800°F | |||
| Carbon Steel | ASTM A106 Gr. B | 300 | 275 | 250 | 225 | 200 | ASME B31.3 |
| ASTM A53 Gr. B | 290 | 265 | 240 | 215 | 190 | ||
| ASTM A333 Gr. 6 | 280 | 260 | 230 | 210 | 185 | ||
| Stainless Steel | ASTM A312 TP304 | 400 | 375 | 350 | 320 | 290 | ASME B31.3 |
| ASTM A312 TP316 | 410 | 385 | 360 | 330 | 300 | ||
| ASTM A312 TP321 | 390 | 365 | 340 | 310 | 280 | ||
| Alloy Steel | ASTM A335 P11 | 500 | 470 | 440 | 400 | 360 | ASME B31.1 |
| ASTM A335 P22 | 520 | 490 | 460 | 420 | 380 | ||
| Duplex Steel | ASTM A790 UNS S31803 | 600 | 580 | 550 | 520 | 490 | ASME B31.3 |
| ASTM A790 UNS S32205 | 620 | 600 | 570 | 540 | 510 | ||
| Nickel Alloy | ASTM B366 UNS N06600 | 700 | 680 | 650 | 620 | 590 | ASME B31.3 |
| ASTM B366 UNS N08825 | 720 | 700 | 670 | 640 | 610 | ||
| Material | Pipe Standard | Dimensional Tolerances (mm) | Wall Thickness Tolerances (%) | Standard | ||||
|---|---|---|---|---|---|---|---|---|
| OD (Outer Diameter) | Length (Pipe Cut Tolerance) | End Preparation | Min | Max | Average | |||
| Carbon Steel | ASTM A106 Gr. B | ±0.5 | ±2.0 | ±1.0 | -12.5% | +12.5% | ±10% | ASME B31.3 / B31.1 |
| ASTM A53 Gr. B | ±0.6 | ±2.0 | ±1.2 | -12.5% | +12.5% | ±10% | ||
| ASTM A333 Gr. 6 | ±0.7 | ±2.5 | ±1.5 | -10% | +10% | ±8% | ||
| Stainless Steel | ASTM A312 TP304 | ±0.5 | ±2.0 | ±1.0 | -10% | +10% | ±8% | ASME B31.3 / B31.1 |
| ASTM A312 TP316 | ±0.6 | ±2.0 | ±1.2 | -10% | +10% | ±8% | ||
| ASTM A358 TP321 | ±0.7 | ±2.5 | ±1.5 | -8% | +8% | ±7% | ||
| Duplex Stainless Steel | ASTM A790 UNS S31803 | ±0.6 | ±2.0 | ±1.2 | -10% | +10% | ±8% | ASME B31.3 |
| ASTM A790 UNS S32205 | ±0.7 | ±2.5 | ±1.5 | -8% | +8% | ±7% | ||
| ASTM A790 UNS S32750 | ±0.8 | ±3.0 | ±1.8 | -8% | +8% | ±7% | ||
| Nickel Alloy | ASTM B366 UNS N06600 | ±0.5 | ±2.0 | ±1.0 | -10% | +10% | ±8% | ASME B31.3 |
| ASTM B366 UNS N08825 | ±0.6 | ±2.5 | ±1.2 | -8% | +8% | ±7% | ||
| ASTM B366 UNS N10276 | ±0.7 | ±3.0 | ±1.5 | -8% | +8% | ±7% | ||
Piping spools are widely used in industrial piping systems where accurate fabrication, faster installation and dependable performance are important. Since each spool is prefabricated according to approved fabrication drawings, it helps reduce field welding, minimise installation time and improve alignment during construction, plant expansion and maintenance projects.
Our prefabricated piping spools are supplied for oil & gas plants, refineries, petrochemical facilities, chemical processing units, power generation projects, offshore platforms, marine installations, water treatment plants, desalination projects, pharmaceutical facilities, food processing plants, fertiliser units and pulp & paper industries. Depending on the service conditions, they are manufactured in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloys, titanium and copper-nickel materials.
Piping spools are commonly used for process piping, utility lines, steam systems, cooling water circuits, firewater networks, chemical transfer lines, offshore piping, marine piping systems and industrial fluid handling applications where consistent fabrication quality and easier site installation are required.
Used in offshore and onshore installations for fast and reliable pipeline assembly.
Ensures accurate and leak-proof connections in high-pressure chemical processing plants.
Used in steam, cooling, and fuel transport systems within thermal and nuclear power stations.
Pre-fabricated spools ensure quick installation in desalination and wastewater treatment facilities.
Maintains hygienic and sterile conditions in fluid transport for pharmaceutical manufacturing.
Stainless steel spools provide corrosion resistance and compliance with sanitary regulations.
Used in ship engine rooms, ballast water systems, and offshore platform piping networks.
Prefabricated spools simplify complex pipeline installations in high-rise buildings and industrial projects.
Piping spools are widely used because they simplify installation and help improve overall project execution. Since the fabrication work is completed in a controlled manufacturing environment, site welding, cutting and fitting activities are significantly reduced. This allows contractors to install piping systems more quickly while maintaining consistent quality across the project.
Prefabricated piping spools also improve dimensional accuracy because each spool is manufactured according to approved isometric drawings and project specifications. Every section is checked before dispatch, helping minimise fit-up issues and unnecessary modifications during site installation.
Another advantage is better quality control. Fabrication, welding, dimensional inspection and testing are carried out before delivery, making it easier to verify compliance with project requirements. Depending on the specification, piping spools can be supplied with hydrostatic testing, PMI testing, radiography, ultrasonic testing, material test certificates, weld maps and complete traceability documentation.
Using fabricated pipe spools also helps reduce labour requirements at the site, particularly for projects involving large piping networks, shutdown work or fast-track installations. Since much of the fabrication is completed before shipment, contractors can reduce installation time and improve project scheduling.
Piping spools are manufactured in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloy, Inconel, Incoloy, Monel, Hastelloy, titanium and copper-nickel materials, making them suitable for refineries, petrochemical plants, offshore platforms, power stations, water treatment facilities, marine projects and chemical processing industries.
ARK Stainless Inc. fabricates piping spools according to customer drawings, piping isometrics and project specifications for industrial piping systems. We manufacture carbon steel, stainless steel, alloy steel, duplex, super duplex, nickel alloy, titanium and copper-nickel piping spools in various sizes, schedules and pressure ratings for domestic and export projects.
Our fabrication scope covers pipe cutting, edge preparation, fit-up, welding, flange alignment, branch connections and final assembly. Depending on project requirements, each spool can be supplied with valves, fittings, flanges, supports, vents, drains and other welded components, allowing faster installation at the site and reducing fabrication work during construction.
Quality checks are carried out throughout fabrication to verify dimensions, alignment and weld quality before dispatch. We can also provide hydrostatic testing, PMI testing, radiography, ultrasonic testing, dye penetrant testing, dimensional inspection and Material Test Certificates (EN 10204 3.1), along with heat number traceability and third-party inspection whenever specified.
Every piping spool is marked, packed and prepared according to customer specifications to simplify identification and installation on-site.
Straight Pipe Spools are prefabricated pipe sections manufactured for direct installation in industrial piping systems. They are commonly supplied with bevel ends, flanged ends or other specified end connections, allowing faster assembly during construction, plant expansion and shutdown projects. Since each spool is fabricated according to approved isometric drawings and project specifications, installation work at the site becomes quicker and more accurate.
ARK Stainless Inc. manufactures Carbon Steel Straight Pipe Spools, Stainless Steel Straight Pipe Spools, Alloy Steel Straight Pipe Spools, Duplex Steel Straight Pipe Spools, Super Duplex Pipe Spools, Nickel Alloy Pipe Spools, Titanium Pipe Spools and Copper Nickel Pipe Spools for process piping, utility lines and high-pressure industrial applications. Depending on project specifications, straight pipe spools can be supplied with flanges, fittings, valves, supports, vents and drains as part of the assembled spool.
Our straight piping spools are widely supplied for oil & gas plants, refineries, petrochemical facilities, chemical processing units, power generation projects, water treatment plants, offshore platforms, marine piping systems and industrial process plants. Each spool is fabricated according to customer drawings and project specifications to help achieve accurate fit-up and faster installation during construction, maintenance and shutdown projects.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Length (L) | End Type |
|---|---|---|---|
| 1/2" | 21.3 mm | 1000 mm | Beveled |
| 3/4" | 26.7 mm | 1200 mm | Flanged |
| 1" | 33.4 mm | 1500 mm | Plain |
| 1 1/2" | 48.3 mm | 2000 mm | Beveled |
| 2" | 60.3 mm | 2500 mm | Flanged |
| 3" | 88.9 mm | 3000 mm | Beveled |
| 4" | 114.3 mm | 3500 mm | Flanged |
| 6" | 168.3 mm | 4000 mm | Beveled |
| 8" | 219.1 mm | 4500 mm | Flanged |
Elbow piping spools are prefabricated pipe assemblies used where the direction of a pipeline needs to change without carrying out fabrication work on-site. By combining pipe sections and elbows into a ready-to-install assembly, elbow spools help reduce site welding, simplify installation and improve alignment during construction and maintenance projects.
ARK Stainless Inc. manufactures 45° and 90° elbow piping spools in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloy, Inconel, Monel, Hastelloy, titanium and copper-nickel materials. Each spool is fabricated according to approved piping isometric drawings and project specifications, with bevel ends, flanged ends or custom end connections available to suit the piping system.
Our elbow piping spools are supplied for oil & gas facilities, petrochemical plants, refineries, chemical processing units, power stations, offshore platforms, marine piping systems, water treatment plants and industrial process facilities. Depending on project requirements, the assemblies can be supplied with flanges, valves, branch connections, supports and other welded components to reduce fabrication work during installation.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Center-to-Face (A) 90° Elbow | Center-to-Face (B) 45° Elbow | Wall Thickness (SCH 40) |
|---|---|---|---|---|
| 1/2" | 21.3 mm | 38 mm | 16 mm | 2.77 mm |
| 3/4" | 26.7 mm | 38 mm | 19 mm | 2.87 mm |
| 1" | 33.4 mm | 51 mm | 22 mm | 3.38 mm |
| 1 1/4" | 42.2 mm | 64 mm | 25 mm | 3.56 mm |
| 1 1/2" | 48.3 mm | 76 mm | 29 mm | 3.68 mm |
| 2" | 60.3 mm | 102 mm | 35 mm | 3.91 mm |
| 3" | 88.9 mm | 152 mm | 57 mm | 5.49 mm |
| 4" | 114.3 mm | 203 mm | 76 mm | 6.02 mm |
| 6" | 168.3 mm | 305 mm | 114 mm | 7.11 mm |
| 8" | 219.1 mm | 406 mm | 152 mm | 8.18 mm |
Tee piping spools are prefabricated pipe assemblies used where a branch connection is required within a piping system. They are commonly manufactured in Equal Tee and Reducing Tee configurations to suit different process requirements and pipeline layouts. By fabricating the tee assembly before delivery, site welding is reduced, and installation becomes quicker and more organised.
ARK Stainless Inc. manufactures Equal Tee Piping Spools and Reducing Tee Piping Spools in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloy, Inconel, Incoloy, Monel, Hastelloy, titanium and copper-nickel materials. Every piping spool is fabricated according to approved isometric drawings, piping layouts and project specifications, with bevel ends, flanged ends or custom end preparations available to match installation requirements.
Our tee piping spools are supplied for oil & gas plants, refineries, petrochemical facilities, chemical processing units, power generation projects, offshore platforms, marine piping systems, water treatment plants and other industrial piping applications where branch connections are required for process lines, utility piping and distribution networks. Depending on the project scope, the spool assembly can also include flanges, valves, reducers, vents, drains, supports and other welded components.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Run Center-to-End (A) | Branch Center-to-End (B) | Wall Thickness (SCH 40) |
|---|---|---|---|---|
| 1/2" | 21.3 mm | 25 mm | 25 mm | 2.77 mm |
| 3/4" | 26.7 mm | 29 mm | 29 mm | 2.87 mm |
| 1" | 33.4 mm | 38 mm | 38 mm | 3.38 mm |
| 1 1/4" | 42.2 mm | 48 mm | 48 mm | 3.56 mm |
| 1 1/2" | 48.3 mm | 57 mm | 57 mm | 3.68 mm |
| 2" | 60.3 mm | 64 mm | 64 mm | 3.91 mm |
| 3" | 88.9 mm | 76 mm | 76 mm | 5.49 mm |
| 4" | 114.3 mm | 95 mm | 95 mm | 6.02 mm |
| 6" | 168.3 mm | 143 mm | 143 mm | 7.11 mm |
| 8" | 219.1 mm | 191 mm | 191 mm | 8.18 mm |
Reducer piping spools are fabricated where a pipeline needs to transition between different pipe sizes without affecting the overall piping layout. Depending on the flow requirements and installation arrangement, these assemblies are manufactured with concentric reducers or eccentric reducers and supplied as ready-to-install spool sections for industrial piping systems.
ARK Stainless Inc. manufactures Concentric Reducer Piping Spools and Eccentric Reducer Piping Spools in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloy, Inconel, Incoloy, Monel, Hastelloy, titanium and copper-nickel materials. Each piping spool is fabricated according to approved isometric drawings, piping layouts and project specifications, with bevel ends, flanged ends or custom end connections available to suit different process requirements.
Reducer piping spools are regularly supplied for oil & gas plants, petrochemical facilities, refineries, chemical processing units, power stations, offshore platforms, marine piping systems, water treatment plants and other industrial process applications where changes in pipe size are required while maintaining efficient flow through the system. Depending on the project scope, spool assemblies can include flanges, valves, elbows, supports, vents, drains and other fabricated components ready for installation.
| Nominal Pipe Size (NPS) | Large End Diameter (D1) | Small End Diameter (D2) | Reducer Length (H) | Wall Thickness (SCH 40) |
|---|---|---|---|---|
| 2" x 1" | 60.3 mm | 33.4 mm | 76 mm | 3.91 mm |
| 3" x 2" | 88.9 mm | 60.3 mm | 89 mm | 5.49 mm |
| 4" x 2" | 114.3 mm | 60.3 mm | 102 mm | 6.02 mm |
| 6" x 4" | 168.3 mm | 114.3 mm | 127 mm | 7.11 mm |
| 8" x 6" | 219.1 mm | 168.3 mm | 152 mm | 8.18 mm |
| 10" x 8" | 273.0 mm | 219.1 mm | 178 mm | 9.27 mm |
| 12" x 10" | 323.9 mm | 273.0 mm | 203 mm | 9.52 mm |
Flanged piping spools are prefabricated pipe assemblies manufactured with flanges at one or both ends to simplify installation, maintenance and future pipeline modifications. They are widely used where bolted flange connections are preferred over field welding, allowing faster assembly and easier dismantling during plant shutdowns and maintenance activities.
ARK Stainless Inc. manufactures Flanged Piping Spools in carbon steel, stainless steel, alloy steel, duplex steel, super duplex steel, nickel alloy, Inconel, Incoloy, Monel, Hastelloy, titanium and copper-nickel materials for industrial piping systems. Each spool is fabricated according to approved isometric drawings, piping layouts and project specifications, with flange facing, drilling and dimensions manufactured to the applicable international standards.
Our flanged piping spools are regularly supplied for oil & gas plants, refineries, petrochemical facilities, chemical processing units, power generation projects, offshore platforms, marine piping systems, water treatment plants and other industrial process applications. Depending on the project requirements, the spool assemblies can be supplied with elbows, reducers, tees, valves, supports, vents, drains and other welded components ready for installation.
| Nominal Pipe Size (NPS) | Flange Outer Diameter (OD) | Bolt Circle Diameter (BCD) | Number of Bolts | Bolt Hole Diameter | Spool Length (Customizable) |
|---|---|---|---|---|---|
| 1/2" | 89 mm | 60.3 mm | 4 | 15.7 mm | Custom |
| 1" | 114 mm | 79.4 mm | 4 | 15.7 mm | Custom |
| 2" | 165 mm | 127.0 mm | 4 | 19.0 mm | Custom |
| 4" | 279 mm | 215.9 mm | 8 | 22.4 mm | Custom |
| 6" | 356 mm | 269.9 mm | 8 | 25.4 mm | Custom |
| 8" | 419 mm | 330.2 mm | 8 | 28.4 mm | Custom |
| 10" | 508 mm | 387.4 mm | 12 | 31.8 mm | Custom |
| 12" | 610 mm | 450.8 mm | 12 | 34.9 mm | Custom |
