Home > Welded Pipes > API 5L
Inox Steel India is a trusted global supplier of API 5L Welded Line Pipes in Grades B, X42, X46, X52, X56, X60, X65, X70, and X80, manufactured as per PSL1 and PSL2 specifications. Our welded line pipes are produced through ERW (Electric Resistance Welded), LSAW (Longitudinal Submerged Arc Welded) and HSAW/SSAW (Spiral Welded) processes for long-distance transportation of oil, gas, water, slurry, and petroleum products.
We deliver API 5L line pipes for pipeline projects across the Middle East, Africa, Europe, USA, Canada, South America, and Asia-Pacific, supplying both onshore and offshore pipeline requirements. All pipes are tested as per API 5L for mechanical strength, weld integrity, notch toughness, hydrostatic pressure, and impact resistance.
With a wide size range up to 120-inch diameter, advanced NDT facilities, 3LPE/3LPP/FBE coating capability, and project-based documentation (MTC 3.2, RT, UT, DNV / ABS / BV inspection), Inox Steel India supports pipeline contractors, EPCs, and O&G operators worldwide.
Large diameter SS welded pipes are manufactured from stainless steel plates or coils by using longitudinal welding processes (ERW / EFW) and are mostly used where:
✔ PSL1 – General Pipeline Quality
✔ PSL2 – Strict Pipeline Quality
1️⃣ Coil/Plate Selection
High-quality carbon steel plates and coils are selected as per PSL1/PSL2 chemistry.
2️⃣ Forming & Welding
3️⃣ Heat Treatment (If Required)
Applied depending on PSL level and grade (X52+)
4️⃣ Non-Destructive Testing (NDT)
5️⃣ Hydrostatic Testing
All pipes are hydro tested to ensure pressure safety.
6️⃣ Coating & Finishing
Options include:
7️⃣ Final Inspection & Marking
Marking includes:
Grade • PSL Level • Heat Number • Size • Standard • Origin • Coating Type
✔ ERW – Electric Resistance Welded Pipes
✔ LSAW – Longitudinal Submerged Arc Welded Pipes
✔ HSAW / SSAW – Spiral Welded Pipes
Industrial Applications
High Temperature Applications
Structural & Architectural Applications
Oil & Gas Sector
High Temperature Applications
Industrial Applications
Structural Use
API 5L pipes are the backbone of global pipeline networks due to their strength, durability, weldability, and long-distance transport efficiency.
| Parameter / Property | API 5L Welded Line Pipes | Standard Requirements – API 5L |
|---|---|---|
| Standard | API 5L PSL1 / PSL2 | API 5L |
| Product Type | ERW / LSAW / HSAW (Spiral) Line Pipe | Pipeline Transport |
| Grades Available | Gr B, X42, X46, X52, X56, X60, X65, X70, X80 | All PSL1/PSL2 Grades |
| Material Type | Carbon Steel | Carbon Steel |
| Manufacturing Processes | ERW (Electric Resistance Welded), LSAW (Longitudinal Submerged Arc Welded), HSAW/SSAW (Spiral Welded) | As per API 5L Clause 9/10 |
| Diameter Range | ERW: 1/2”–24”; LSAW: 16”–60”; HSAW: 18”–120” | As per product specification |
| Wall Thickness | SCH 20 – SCH 160 / Heavy Wall | Project Based |
| Pipe Length | 6M / 12M / Long Length | As specified |
| PSL Levels | PSL1, PSL2 | PSL1/PSL2 |
| Yield Strength (min) | Gr B: 240 MPa; X42: 290 MPa → X80: 555 MPa | API Specified |
| Tensile Strength (min) | Gr B: 415 MPa; X42: 415 MPa → X80: 625 MPa | API Specified |
| Impact Testing | Required for PSL2 (CVN) | PSL2 Mandatory |
| Hydrostatic Testing | Required | Required |
| NDT Testing | ERW: Eddy Current; LSAW/HSAW: UT / RT | Mandatory |
| Coating Options | 3LPE, 3LPP, FBE, Coal Tar, Epoxy | Optional |
| End Finish | BE (Bevelled), PE (Plain), Threaded (small dia) | As per order |
| Applications | Oil, Gas, Water Transmission | Pipeline Systems |
| Documentation | MTC 3.1/3.2, Hydro Reports, NDT Reports | Required |
| HSN Code | 7305 / 7306 | Line Pipe |
This datasheet provides a full comparison of ERW, LSAW & HSAW welded pipelines in API 5L Grades B to X80 across PSL1 & PSL2 levels, useful for pipeline designers, EPC contractors, and procurement teams.
Outside Diameter (OD)
Custom large diameters up to 120 inches (3 meters) available for water transmission & piling applications.
Wall Thickness
Length
End Finishes
Coating Options
| Element | Gr B | X42 | X52 | X60 | X65 | X70 | X80 |
|---|---|---|---|---|---|---|---|
| C (max) | 0.28 | 0.26 | 0.26 | 0.23 | 0.21 | 0.18 | 0.12 |
| Mn | 1.20 | 1.40 | 1.40 | 1.40 | 1.45 | 1.65 | 1.85 |
| P (max) | 0.030 | 0.030 | 0.030 | 0.025 | 0.025 | 0.020 | 0.020 |
| S (max) | 0.030 | 0.030 | 0.030 | 0.025 | 0.015 | 0.015 | 0.010 |
| Nb / V / Ti | Permitted | Permitted | Permitted | Controlled | Controlled | Controlled | Controlled |
| Property | PSL1 | PSL2 |
|---|---|---|
| Tensile Strength | Specified per grade | Higher than PSL1 |
| Yield Strength | As per grade | Strict tolerance |
| CVN Impact Test | Optional | Mandatory |
| NDT Requirements | Standard | Enhanced NDT |
| Chemical Limits | Standard | Lower S & P |
| Weld Quality | Standard | Higher weld integrity |
| Documentation | MTC 3.1 | MTC 3.2 (on request) |
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) |
|---|---|---|
| Gr B | 240 | 415 |
| X42 | 290 | 415 |
| X46 | 320 | 435 |
| X52 | 360 | 460 |
| X56 | 390 | 490 |
| X60 | 415 | 520 |
| X65 | 450 | 535 |
| X70 | 485 | 570 |
| X80 | 555 | 625 |
| Pipe Type | Price (INR/kg) | Price (USD/kg) |
|---|---|---|
| ERW API 5L | ₹ 70 – ₹ 120 | $ 1.10 – $ 1.70 |
| LSAW API 5L | ₹ 85 – ₹ 160 | $ 1.40 – $ 2.20 |
| HSAW / SSAW API 5L | ₹ 75 – ₹ 130 | $ 1.20 – $ 1.80 |
| 3LPE / 3LPP Coating | +₹ 20 – ₹ 55 | +$ 0.30 – $ 0.75 |
| FBE Coating | +₹ 12 – ₹ 30 | +$ 0.18 – $ 0.45 |
Prices vary by diameter, thickness, grade, PSL level, coating type & project documentation.
✔ Mandatory Tests
✔ PSL2 Additional Mandatory Tests
✔ Documentation
7305 / 7306 — Line Pipes (Carbon Steel)
Middle East:
Africa:
Europe:
Americas:
Asia Pacific:
Industries That Use These Pipes:
Inox Steel India is one of India’s most reliable manufacturers and global exporters of API 5L ERW, LSAW & HSAW Line Pipes, supplying major pipeline EPCs, O&G operators, water distribution authorities, and infrastructure contractors.
Why We Are Trusted Worldwide:
From cross-country oil & gas pipelines to mega drinking water transmission projects, Inox Steel India delivers line pipes that meet strength, durability, and installation reliability.
✔ Oil & Gas Pipelines
✔ Water Transmission & Large Infrastructure
✔ Industrial & Utility Piping
✔ Refinery & Petrochemical Piping
✔ Structural & Piling Applications
API 5L line pipes are known for their high strength, weldability, and long-distance flow efficiency, making them essential for cross-country transmission.
To match your sample style, here is the precise layout:
✔ Standard Packing
✔ Heavy Duty Packing (Pipeline Projects)
✔ Export Packing
✔ Ports of Dispatch
JNPT • Mundra • Hazira • Chennai • Vizag
Looking for API 5L Welded Line Pipes (ERW / LSAW / HSAW) for your pipeline project?
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in
+91 9930796690
Inox Steel India
Email
Phone
Grades X52, X56, X60, X65, and X70 are most commonly used for long-distance, high-pressure O&G pipelines.
Yes — external coatings (3LPE/3LPP/FBE) and internal lining (epoxy/cement mortar) are available.
Yes — SGS, BV, Lloyd’s, DNV, TUV inspections available.
Up to 120-inch (3 meters) in HSAW/SSAW.
We deliver certified, coated, and fully tested API 5L line pipes worldwide.