... StandardSY/T5037,SY/T5040,ASTMA252,EN10217,EN10219,GB/T9711.1,API 5L3.Outer Diameter219.1—3600 mm4.Wall Thickness6mm—30 mm ... petroleum and natural gas , water and gas, mineral slurry. Also for chemical industry, building structure and pile driving, etc.12. Export ... , Spain, Italy, France, England, Belgium, etc13.CertificatesAPI 5L PSL1,PSL2 , API 5CT, ISO ,CE API 5L Gr.B Spiral Seam Welding Steel Pipe