... , piling, building bridge, steel structures,Technical standard:1) ASTM A532) ASTM A1063) API 5L4)API 5CT5 ... EN 102106) GB/T8163-19997)ISO 9001Grades:1>J55,K55,N80,P110,L802>ASTM A106 GR ... grade is available as per clients requirements.Ordinary Sizes:1) Outsider diameter: 60 - 273mm2) Wall Thickness: ... 2-21 2:47:44 steel line pipe,API Spec 5L , API Spec 5CT, API Spec 5B, EN10217, GB/T9711.1 and GB/T9711.2 ...