asy welding characteristic, all of which have come up to not only a national but an international advance level. For Example: low-temperature-resistant steel pipe (impact sharpy @ -60℃≥100J), high-strength steel pipe (Rem≥960mpa), high-tenacity steel pipe (elongation A5%≥40), wear-resistant steel pipe, corrosive-resistant steel pipe, fatigue-resistant steel pipe for truck axle etc. We also customize the steel pipe with required shape, usage with the upgraded appearance and performance.?The