Reliable Welded Tubular Infrastructure
Engineered to API 5L PSL1/PSL2 and ASTM A53 Gr. B with 100% non-destructive weld seam inspection and hydro testing.
API 5L & ASTM A53 Welded Carbon Steel Specifications
Starlight Tubes supplies high-frequency electric resistance welded (HFW/ERW) and double submerged arc welded (LSAW/DSAW) line pipes engineered for high throughput cross-country fuel transmission and high-volume industrial fluid distribution.
Available with plain ends, beveled ends for on-site welding, or grooved connections, with optional external anti-corrosion 3LPE, 3LPP, or FBE protective coatings applied in-house.
Technical Specifications
ASTM / ASME CompliantTechnical Specifications — Carbon Steel ERW & LSAW Welded Pipe
Chemical composition and mechanical ratings for carbon steel welded line and structural pipe
| Standard / Grade | C (max) | Mn (max) | P (max) | S (max) | Si (max) |
|---|---|---|---|---|---|
| ASTM A53 Type E Gr. B | 0.30 | 1.20 | 0.050 | 0.045 | - |
| API 5L Gr. B Welded | 0.22 | 1.20 | 0.025 | 0.015 | 0.45 |
| API 5L X52 Welded | 0.22 | 1.40 | 0.025 | 0.015 | 0.45 |
| API 5L X65 Welded | 0.16 | 1.65 | 0.020 | 0.010 | 0.45 |
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Get Factory Pricing for Welded Carbon Steel Pipes
Competitive mill pricing with fast export packaging and direct container vessel booking from Nhava Sheva (JNPT) Mumbai.
Frequently Asked Questions on Carbon Steel Welded Line Pipes
Key engineering, tolerance, and international compliance answers from our metallurgical quality desk.
ERW (Electric Resistance Welded) pipes are typically used for smaller to medium diameters (up to 24" NB), whereas LSAW (Longitudinal Submerged Arc Welded) pipes are used for large diameter, heavy-wall high-pressure pipelines up to 48"+ NB.
Request Project Quotation for Carbon Steel Welded Line Pipes
Submit your required sizes, wall thicknesses, material grades, and total tonnage. Our technical sales engineers respond with complete mill pricing and lead times within 24 hours.