API 5L X42 welded pipe is a low-carbon manganese steel welded pipe that conforms to international standards for oil and gas transmission pipes.
Core Advantages of API 5L X42 Welded Pipe
Balanced Strength & Toughness
→ X42 signifies a minimum yield strength of 42,000 psi (~290 MPa). This mid-range strength offers optimal pressure resistance and low-temperature toughness, ideal for onshore/shallow offshore pipelines.
→ Carbon-manganese steel composition (C ≤ 0.28%) ensures excellent weldability with low cracking risk.
Rigorous Quality Control
→ Compliant with API 5L (global standard for oil/gas pipelines), mandating chemical composition, mechanical testing, hydrostatic tests, and NDE (e.g., UT/RT) to prevent defective pipes from entering service.
→ Available in PSL1 (basic) and PSL2 (enhanced), with the latter requiring stricter impact toughness and carbon equivalent limits.
Cost & Efficiency Edge
→ Welded pipes cost 30%-50% less than seamless equivalents and support larger diameters (typically Ø114mm-Ø1422mm).
→ Continuous welding enables high-speed production, perfect for mass deployment in long-distance pipelines.
API 5L X42 PSL1 PSL2 Chemical Composition
| Grade | Chemical Composition | |||||||
|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | V | Nb | Ti | |
| API 5L X42 | 0.16 | 0.45 | 1.65 | 0.020 | 0.010 | 0.07 | 0.05 | 0.04 |
API 5L X42 PSL1 PSL2 Mechanical Properties
| Grade | Permissible yield point ratio | Yield Strength MPa(min) | Tensile Strength MPa | Elongation % (min) |
|---|---|---|---|---|
| API 5L X42 | ≤ 0.85 | 290 | 420 - 540 | 23 |
API 5L X42 pipe wall thickness & schedule chart
API 5L X42 ERW Line Pipe Factory
