Carbon Steel Pipe Fittings Manufacturer, Supplier & Exporter in India
Carbon Steel Pipe Fittings are mechanical components manufactured from iron-carbon alloy steel (with up to 2.1% carbon by weight) used to connect, direct, branch, reduce, or terminate pipelines in industrial piping systems. These carbon steel fittings offer high tensile strength, excellent weldability, and cost-effectiveness, making them ideal for demanding applications in oil & gas, chemical processing, power generation, and construction.
Amardeep Steel Centre has been part of Mumbai’s industrial fabric since 1984 — and over those four decades, we’ve built a reputation as one of India’s most dependable sources for carbon steel pipe fittings. Whether you need Carbon Steel Buttweld Fittings, Carbon Steel Forged Fittings, Carbon Steel Flanges, and Carbon Steel Fasteners, we manufacture them all to internationally recognized ASTM, ASME, and API standards.
We maintain a large ready stock of common grades and sizes at our Mumbai warehouse, ensuring fast delivery for urgent requirements. All fittings are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates, IBR approval, and third-party inspection documentation on request.
Operating Temperature: Standard CS fittings (ASTM A234 WPB) are rated from −29°C to +425°C. Low-temperature grades (A420 WPL6) extend service to −46°C. High-yield grades (WPHY 42–70) are available for high-pressure line pipe applications.
Types of Carbon Steel Fittings
We manufacture and export all major categories of carbon steel pipe fittings and CS fittings. Click any category to explore detailed specifications, grades, dimensions, and pricing.
Carbon Steel Buttweld Fittings
ASTM A234 WPB / ASME B16.9Weld-end fittings for high-pressure, large-bore piping. Full-bore, flush joint connection ideal for critical process applications. Includes elbows (45°/90°), tees, reducers, caps, stub ends, crosses, and returns.
Carbon Steel Forged Fittings
ASTM A105 / ASME B16.11Socket weld and threaded fittings for smaller bore, high-pressure applications. Available in pressure classes 2000, 3000, 6000, and 9000. Includes elbows, tees, couplings, unions, crosses, caps, and bushings.
Carbon Steel Pipe Fittings by Type — Elbows, Tees, Reducers & More
We supply all standard fitting shapes in both buttweld and forged (socket weld / threaded) construction.
Carbon Steel Elbows
45°, 90°, 180° LR & SR. Change flow direction with minimal pressure drop.
Carbon Steel Tees
Equal & reducing tees for branching pipelines.
Carbon Steel Reducers
Concentric & eccentric reducers to connect pipes of different diameters.
Carbon Steel Caps / Plugs
End caps and plugs to seal pipe ends for pressure testing or permanent closure.
Carbon Steel Stub Ends
Short & long pattern stub ends for lap-joint flange assemblies (MSS-SP-43).
Carbon Steel Crosses
Equal & reducing crosses connecting four pipe segments at right angles.
CS Couplings & Unions
Full & half couplings, unions, and nipples for forged piping connections.
Carbon Steel Pipe Bends
3D, 5D, 10D custom-radius bends for smooth directional routing with reduced pressure loss.
Carbon Steel Pipe Fittings Specifications
| Parameter | Specification |
|---|---|
| Size Range | ½" – 96" NB (DN 15 – DN 2400); Seamless: ½" – 24"; Welded: 24" – 96" |
| Wall Thickness | SCH 10 to SCH XXS (SCH 10, 20, 40, 60, 80, 100, 120, 140, 160, XXS) |
| Grades | ASTM A234 WPB/WPC/WP11/WP22 | A420 WPL6 | A860 WPHY 42/52/60/65/70 | A105 (forged) |
| Operating Temp. | −46°C to +425°C (WPB standard); low-temp WPL6 to −46°C; high-yield WPHY up to +315°C |
| Standards — Dimensional | ASME B16.9 (buttweld) | ASME B16.11 (forged) | MSS-SP-43 (stub ends) | ASME B16.28 (SR elbows) |
| Standards — Material | ASTM A234 | ASTM A105 | ASTM A420 | ASTM A860 | ASME SA234 |
| Density | 7.84 g/cm³ |
| Certifications | EN 10204 3.1 / 3.2 MTC | IBR | NACE MR0175 | HIC tested | NORSOK | PMI reports |
| Design Life | 20–30+ years (service-dependent; subject to operating pressure, fluid, and corrosion allowance per design code) |
| Finish / Coating | Plain, PE coating, 3PE coating, anti-corrosion coating (custom options available) |
Chemical Composition of Carbon Steel Pipe Fittings by Grade
| Grade | C % max | Mn % | P % max | S % max | Si % | Cu % max |
|---|---|---|---|---|---|---|
| A234 WPB | 0.30 | 0.29–1.06 | 0.050 | 0.058 | 0.10 min | 0.40 |
| A420 WPL6 | 0.30 | 0.29–1.06 | 0.050 | 0.058 | 0.10 min | 0.40 |
| A105 (Forged) | 0.35 | 0.60–1.05 | 0.035 | 0.040 | 0.10–0.35 | 0.40 |
Carbon Steel Fittings Dimensions
90°, 45° & 180° Elbow Dimensions
| NPS (inch) | mm | inch | 90° Elbow LR (Center to Face) | 90° Elbow SR (Center to Face) | 45° Elbow LR (Center to Face) | 45° Radius | 180° Return (Center to Center) | 180° Return (Back to Face) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 21.3 | 0.840 | 1 1/2 | - | 5/8 | - | 2 | 1 7/8 |
| 3/4 | 26.7 | 1.050 | 1 1/8 | - | 7/16 | - | 2 1/4 | 1 11/16 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | - | 3 | 2 3/16 |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | - | 3 3/4 | 2 3/4 |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Caps, Tees, Cross & Stub Ends
| NPS | mm | inch | Cap Length | Straight Tee (Center to End) | Cross (Center to End) | Stub End Lap Diameter | Stub End Long Length | Stub End Short Length |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 21.3 | 0.840 | 1 | 1 | - | 1 3/8 | 3 | 2 |
| 3/4 | 26.7 | 1.050 | 1 | 1 1/8 | - | 1 11/16 | 3 | 2 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
| 1 1/4 | 42.2 | 1.660 | 1 1/2 | 1 7/8 | 1 7/8 | 2 1/2 | 4 | 2 |
| 1 1/2 | 48.3 | 1.900 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
| 2 | 60.3 | 2.375 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
| 2 1/2 | 73.0 | 2.875 | 1 1/2 | 3 | 3 | 4 1/8 | 6 | 2 1/2 |
| 3 | 88.9 | 3.500 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
| 3 1/2 | 101.6 | 4.000 | 2 1/2 | 3 3/4 | 3 3/4 | 5 1/2 | 6 | 3 |
| 4 | 114.3 | 4.500 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
| 5 | 141.3 | 5.563 | 3 | 4 7/8 | 4 7/8 | 7 5/16 | 8 | 3 |
| 6 | 168.3 | 6.625 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
| 8 | 219.1 | 8.625 | 4 | — | — | — | — | — |
Reducer Dimensions
| NPS (mm) | NPS (inch) | Length H (mm) | Schedule |
|---|---|---|---|
| 20×15 | 3/4" × 1/2" | 38.1 | STD |
| 25×15 | 1" × 1/2" | 50.8 | STD |
| 25×20 | 1" × 3/4" | 50.8 | STD |
| 32×15 | 1 1/4" × 1/2" | 50.8 | STD |
| 32×20 | 1 1/4" × 3/4" | 50.8 | STD |
| 40×15 | 1 1/2" × 1/2" | 63.5 | STD |
| 40×20 | 1 1/2" × 3/4" | 63.5 | STD |
| 40×25 | 1 1/2" × 1" | 63.5 | STD |
| 50×15 | 2" × 1/2" | 76.2 | STD |
| 50×20 | 2" × 3/4" | 76.2 | STD |
| 50×25 | 2" × 1" | 76.2 | STD |
| 50×32 | 2" × 1 1/4" | 76.2 | STD |
| 50×40 | 2" × 1 1/2" | 76.2 | STD |
| 65×32 | 2 1/2" × 1 1/4" | 88.9 | STD |
Carbon Steel Pipe Fittings Weight Chart
Equal Tee Weight (kg)
| NPS | Schedule 40 | Schedule 80 | DN |
|---|---|---|---|
| 1/2 | 0.2 | 0.2 | 15 |
| 3/4 | 0.2 | 0.3 | 20 |
| 1 | 0.3 | 0.5 | 25 |
| 1 1/4 | 0.6 | 0.7 | 32 |
| 1 1/2 | 0.9 | 1.3 | 40 |
| 2 | 1.5 | 2.2 | 50 |
| 2 1/2 | 2.7 | 3.0 | 65 |
| 3 | 3.8 | 4.4 | 80 |
| 3 1/2 | 4.6 | 5.9 | 90 |
| 4 | 6.5 | 7.7 | 100 |
| 5 | 9.7 | 13.5 | 125 |
| 6 | 14 | 19.3 | 150 |
| 8 | 24.5 | 34.5 | 200 |
| NPS | Schedule 40 | Schedule 80 | DN |
|---|---|---|---|
| 1/2 | 0.08 | 0.1 | 15 |
| 3/4 | 0.11 | 0.13 | 20 |
| 1 | 0.15 | 0.21 | 25 |
| 1 1/4 | 0.25 | 0.36 | 32 |
| 1 1/2 | 0.39 | 0.52 | 40 |
| 2 | 0.66 | 0.96 | 50 |
| 2 1/2 | 1.37 | 1.8 | 65 |
| 3 | 2.19 | 2.87 | 80 |
| 3 1/2 | 2.96 | 4.06 | 90 |
| 4 | 4.13 | 5.6 | 100 |
| 5 | 6.89 | 9.62 | 125 |
| 6 | 10.7 | 16.5 | 150 |
| 8 | 21.6 | 31.6 | 200 |
Carbon Steel Fittings Pressure Rating
- As per Pressure Piping B31.1
- Working Pressure In LBS In °F (Fahrenheit)
| NPS In Inch | −20° to 650°F |
|---|---|
| 1/2 | 1695 |
| 3/4 | 1455 |
| 1 | 1575 |
| 1 1/4 | 1065 |
| 1 1/2 | 1005 |
| 2 | 900 |
| 2 1/2 | 1215 |
| 3 | 1095 |
| 3 1/2 | 1020 |
| 4 | 975 |
| 5 | 885 |
| 6 | 840 |
| 8 | 765 |
| 10 | 720 |
| 12 | 630 |
| 14 | 570 |
| 16 | 495 |
| 18 | 450 |
| 20 | 405 |
| 24 | 330 |
| 30 | 265 |
| 36 | 220 |
| 42 | 189 |
| 48 | 165 |
Testing of Carbon Steel Fittings
Coating for Carbon Steel Fittings
Installation & Maintenance Tips for CS Fittings
- Ensure proper welding procedures for buttweld fittings
- Use thread sealants for forged threaded fittings
- Apply anti-corrosion coatings for outdoor applications
- Conduct periodic inspection and pressure testing
- Avoid over-tightening in threaded connections
Carbon Steel Pipe Fittings Applications
Carbon steel pipe fittings are used across every major process industry. Our CS fittings meet the most demanding service conditions worldwide.
- Oil & Gas: Upstream pipelines, midstream gas transmission, refinery process piping, LNG terminals.
- Chemical & Petrochem: Process piping in chemical plants, fertilizer units, acid handling, solvent extraction.
- Power Generation: Boiler piping, steam lines, turbine connections, thermal & nuclear power plants.
- Construction & EPC: Industrial construction, EPC contractors, turnkey project procurement.
- Water & Utilities: Municipal water supply, sewage treatment, desalination, irrigation infrastructure.
- Shipbuilding & Marine: Marine piping systems, offshore structures, shipboard fuel and ballast lines.
- Pharmaceuticals: Utility piping systems (steam, compressed air, CIP/SIP) in non-product-contact applications where carbon steel is permitted by site classification.
- Pulp, Paper & Food: High-temperature process lines, steam distribution, food-grade utility piping.
Why Amardeep Steel for Carbon Steel Pipe Fittings?
- Established in 1984, Amardeep Steel has four decades of manufacturing and export expertise. Trusted by 500+ clients across 80+ countries with 10,000+ successful projects completed.02 ISO
- ISO 9001:2015 quality management, IBR-approved manufacturing, EIL approved fittings. All documentation including EN 10204 3.1/3.2 MTC, NABL lab reports, and PMI reports available.
- Extensive inventory at our Mumbai warehouse for standard grades (A234 WPB, A105). Common sizes dispatched in 2–5 business days. Ideal for urgent procurement needs.
- One-stop supplier for all CS pipe fittings: buttweld, forged, flanges, and fasteners. Eliminates multiple vendor management and simplifies your supply chain.
- Direct manufacturer pricing. We source from certified mills and transfer cost efficiencies to customers. Volume discounts and long-term contract pricing available.
- Non-standard sizes, special grades, heavy wall thicknesses, and customer-specific markings. Custom orders manufactured in 2–4 weeks with full traceability documentation.
Request a Quote for Carbon Steel Pipe Fittings
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Get a Quote NowRelated Products
- Carbon Steel Buttweld Fittings
- Carbon Steel Forged Fittings
- Carbon Steel Flanges
- Carbon Steel Fasteners
- ASTM A234 WPB Fittings
- API 5L X52 Buttweld Fittings
- EIL Approved Fittings
Frequently Asked Questions — Carbon Steel Fittings
What are carbon steel pipe fittings?
Carbon steel pipe fittings are mechanical components used to connect, redirect, branch, reduce, or terminate carbon steel pipelines. They include buttweld fittings (elbows, tees, reducers, caps, stub ends, crosses), forged fittings (socket weld, threaded), flanges, and fasteners. Manufactured from iron-carbon alloy steel grades such as ASTM A234 WPB, A105, A350 LF2, and A420 WPL6, they are the industry standard for high-pressure and high-temperature industrial piping.
What is the difference between CS buttweld and forged fittings?
Buttweld fittings (ASME B16.9) are welded end-to-end into the pipe and used for larger bore (½" – 48") high-pressure lines where full-bore flow and smooth internal profile are critical. Forged fittings (ASME B16.11) use socket weld or threaded connections and are specified for smaller bore (½" – 4") applications in pressure classes 2000 to 9000. Buttweld fittings require butt-welding skill and X-ray inspection; forged fittings are quicker to install and suited to instrument and utility lines.
What grades of carbon steel pipe fittings does Amardeep Steel supply?
We supply all major CS fitting grades: ASTM A234 WPB (standard service), A234 WPC (higher yield), A420 WPL6 (low-temperature to −46°C), A860 WPHY 42/52/60/65/70 (high-yield line pipe), and ASTM A105 / A350 LF2 for forged fittings. Custom or less-common grades available on enquiry.
What standards do carbon steel pipe fittings conform to?
Dimensional standards: ASME B16.9 (buttweld), ASME B16.11 (forged SW & threaded), MSS-SP-43 (stub ends), ASME B16.28 (SR elbows). Material standards: ASTM A234, A105, A420, A860. International: DIN 2605/2615/2616/2617, EN 10253-2, JIS B2312/B2313, GOST 17375–17379.
What is the operating temperature range of CS pipe fittings?
ASTM A234 WPB is rated from −29°C to +425°C (−20°F to +797°F) for standard service. For low-temperature service to −46°C, specify A420 WPL6. High-yield WPHY grades are rated to +315°C. Above 425°C, consider alloy steel grades such as P11 or P22.
Does Amardeep Steel provide IBR-approved carbon steel fittings?
Yes. Amardeep Steel Centre is IBR (Indian Boiler Regulations) approved for carbon steel pipe fittings used in steam and pressure systems. IBR approval documentation, Form III-C certificates, and mill test reports are supplied as standard for all IBR-applicable orders.
