Carbon Steel Pipe Fittings Manufacturer

Direct Mill Manufacturer & Stockist

Precision Carbon Steel Buttweld & Forged Pipe Fittings

Rajtilak Metal is an ISO 9001:2015 certified, EIL & IBR approved manufacturer and exporter of heavy-duty carbon steel pipe fittings based in Mumbai, India. Established in 1991, we provide international EPC contractors, petrochemical plants, refineries, offshore platforms and power generation facilities with fully certified, heat-traceable piping components.

Our carbon steel fittings conform strictly to ASME B16.9, ASME B16.11, MSS SP-75, EN 10253, and DIN standards. Whether your specifications require seamless ASTM A234 Grade WPB for high-temperature service, ASTM A420 WPL6 for sub-zero impact resilience, or high-yield MSS SP-75 WPHY 42 through 70 for transmission pipelines, our production undergoes complete non-destructive examination and chemical-mechanical verification.

Fully traceable with EN 10204 3.1 mill test certificates matching stamped heat numbers
Manufactured from prime domestic and imported raw materials (JSW, Jindal, POSCO)
Ultrasonic, hydrostatic, radiographic and PMI testing conducted in-house
Third-party inspection accredited: TUV, DNV, Bureau Veritas, SGS, Lloyd's Register

Carbon Steel Pipe Fittings Manufacturer Stockyard

30+Years Proven Reliability

Looking for Custom Schedules, Heavy Wall, or Large Diameter CS Fittings?

Consult our engineering desk for tailored dimensions up to 48" NPS and NACE MR0175/ISO 15156 compliance.

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Comprehensive Portfolio

Featured Carbon Steel Buttweld Fitting Configurations

Produced in standard schedules (Sch 10 through Sch XXS) and non-standard wall thicknesses for extreme working environments.

Carbon Steel 45 Degree Long Radius Elbow — Carbon Steel 45° Elbows

Carbon Steel 90 Degree Long Radius Elbow — Carbon Steel 90° Elbows

ASTM A234 WPB Equal Straight Tee — CS Straight & Equal Tees

Carbon Steel Concentric Reducer — Concentric Reducers

Carbon Steel Eccentric Reducer — Eccentric Reducers

Carbon Steel Pipe End Cap — Dished Pipe End Caps

Carbon Steel Lap Joint Stub Ends — Lap Joint Stub Ends

Engineering Specifications

ASME B16.9 Carbon Steel Pipe Fittings Manufacturing Scope

Standard manufacturing criteria, pressure-temperature ratings, and dimensional tolerances followed at our Mumbai production facility.

Complete technical specifications conforming to ASME B16.9, MSS SP-75 and international standards.
Technical Parameter	Manufacturing Scope & Compliance Details
Governing Standards	ASME / ANSI B16.9, ASME B16.28, MSS-SP-43, MSS-SP-75, EN 10253-2, DIN 2605, DIN 2615, DIN 2616, JIS B2311/B2312
Material Specifications	ASTM A234 WPB, WPC; Low-Temperature ASTM A420 WPL6, WPL3; High-Yield Linepipe ASTM A860 / MSS SP-75 WPHY 42, 52, 60, 65, 70
Nominal Size Range	Seamless: 1/2″ to 24″ NB \| Welded / Fabricated: 1/2″ to 48″ NB (DN15 – DN1200)
Wall Thickness Schedules	SCH 10, SCH 20, SCH 30, SCH STD, SCH 40, SCH 60, SCH XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, SCH XXS
End Connections	Beveled End (ANSI B16.25), Plain End (Square Cut), Socket Weld & Threaded NPT/BSPT (ASME B16.11)
Surface Finishing & Coating	Black Rust-Preventive Oil, Hot-Dip Galvanized (ASTM A153), Zinc-Plated, Epoxy Coated, Shot Blasted, 3LPE / FBE Coated
Testing & Inspection	Hydrostatic, Tensile, Charpy V-Notch Impact (-46°C for WPL6), Hardness, Spectro Chemical PMI, Ultrasonic, Radiographic
Value-Added Services	Bevel End Preparation to Custom Angles, Specialized Heat Treatment (Normalized, Quenched & Tempered), Third-Party Inspection

Dimensional Verification

ASME B16.9 Carbon Steel Elbow & Return Dimensions

Standard center-to-face and center-to-center dimensions for 90-degree long radius elbows, short radius elbows, 45-degree elbows, and 180-degree returns.

NPS (inch)	Outside Diameter (mm)	O.D. (inch)	90° LR Elbow C-to-F (inch)	90° SR Elbow C-to-F (inch)	45° LR Elbow C-to-F (inch)	180° LR Center-to-Center (inch)	180° LR Back-to-Face (inch)
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	4-1/2	3-1/4
2″	60.3	2.375	3	2	1-3/8	6	4-3/16
2-1/2″	73.0	2.875	3-3/4	2-1/2	1-3/4	7-1/2	5-3/16
3″	88.9	3.500	4-1/2	3	2	9	6-1/4
4″	114.3	4.500	6	4	2-1/2	12	8-1/4
6″	168.3	6.625	9	6	3-3/4	18	12-5/16
8″	219.1	8.625	12	8	5	24	16-5/16
10″	273.1	10.750	15	10	6-1/4	30	20-3/8
12″	323.9	12.750	18	12	7-1/2	36	24-3/8

Wall Thickness & Pressure Data

Schedule 40 & Schedule 80 Carbon Steel Fitting Parameters

Engineering data showing outside diameter, inside diameter, minimum wall thickness, nominal weight, and allowable working pressure at design temperatures.

Schedule 40 (Standard)

NPS	O.D. (in)	I.D. (in)	Min Wall (in)	Max W.P. (psi)
1/2″	0.840	0.622	0.109	590
3/4″	1.050	0.824	0.113	480
1″	1.315	1.049	0.133	450
1-1/2″	1.900	1.610	0.145	330
2″	2.375	2.067	0.154	280
3″	3.500	3.068	0.216	260
4″	4.500	4.026	0.237	220
6″	6.625	6.065	0.280	180
8″	8.625	7.981	0.322	160
10″	10.750	10.020	0.365	140
12″	12.750	11.938	0.406	130

Schedule 80 (Extra Strong)

NPS	O.D. (in)	I.D. (in)	Min Wall (in)	Max W.P. (psi)
1/2″	0.840	0.546	0.147	850
3/4″	1.050	0.742	0.154	690
1″	1.315	0.957	0.179	630
1-1/2″	1.900	1.500	0.200	470
2″	2.375	1.939	0.218	400
3″	3.500	2.900	0.300	370
4″	4.500	3.826	0.337	320
6″	6.625	5.761	0.432	280
8″	8.625	7.625	0.500	250
10″	10.750	9.562	0.593	230
12″	12.750	11.374	0.687	230

Material Integrity

Chemical & Mechanical Properties of Carbon Steel Fittings

Our raw material chemistry conforms to strict ladle analysis requirements. For high-pressure and low-temperature applications, low carbon equivalents (CE) are maintained to facilitate superior on-site field weldability without pre-weld crack risk.

Element	ASTM A234 WPB (%)	ASTM A420 WPL6 (%)
Carbon (C) Max	0.30	0.30
Manganese (Mn)	0.29 – 1.06	0.50 – 1.35
Phosphorus (P) Max	0.050	0.035
Sulfur (S) Max	0.058	0.035
Silicon (Si) Min	0.10	0.15 – 0.40

Strength & Impact Testing

Mechanical Performance Criteria

Every heat lot undergoes room-temperature tensile testing and Charpy V-notch impact validation to certify yield limits, elongation characteristics, and structural toughness.

Property	ASTM A234 WPB	ASTM A420 WPL6
Tensile Strength Min	415 MPa (60 ksi)	415 – 655 MPa (60 – 95 ksi)
Yield Strength Min	240 MPa (35 ksi)	240 MPa (35 ksi)
Elongation in 50mm Min	30% (Longitudinal)	30% (Longitudinal)
Charpy V-Notch Temp	Room Temp	-46°C (-50°F) Tested
Max Hardness	197 HBW Max	197 HBW Max

Procurement Guidance

Frequently Asked Questions by Global Buyers

What carbon steel pipe fitting grades does Rajtilak Metal manufacture?

We manufacture carbon steel buttweld and forged fittings in ASTM A234 Grade WPB, WPC, ASTM A420 WPL6 for low-temperature service, and high-yield linepipe grades ASTM A860 / MSS SP-75 WPHY 42, 52, 60, 65 and 70.

What size range and wall thickness schedules are available?

Our seamless fittings range from 1/2 inch to 24 inches NPS, and welded/fabricated fittings extend up to 48 inches NPS. Wall thicknesses conform to ASME B36.10M from Schedule 10 to Schedule XXS.

Are mill test certificates and third-party inspections provided?

Yes. Every consignment is dispatched with EN 10204 3.1 inspection certification and complete heat traceability. Third-party inspections by agencies like Lloyd's, DNV, TUV, BV and SGS are regularly accommodated.

What protective coatings are applied for overseas sea freight?

All fittings are degreased and treated with anti-rust black lacquer, clear transparent varnish, or hot-dip galvanized per ASTM A153. Custom ends are fitted with protective plastic caps and packaged in seaworthy wooden crates.