Thickness: 0.5 - 30 mm Section Shape: Round Outer Diameter: 21.3 - 323.9 mm Place of Origin: Tianjin China (Mainland) Secondary Or Not: Non-secondary Application: Fluid Pipe Technique: ERW Certification: ISO 9001-2000, BV,SGS Surface Treatment: Galvanized Special Pipe: Thick Wall Pipe Alloy Or Not: Non-alloy zinc coating: 200-400g/m2 finishing: galvanized, oil,painting, pre galvanized, Material: Q195 Q215 Q235 Q345 Mainland: Tianjin,China Ends: Plain, Beveled,Thread with Coupling or cap,Bending End protector: Plastic pipe cap,Iron protector Inspection: With Hydraulic Testing, Eddy Current , Infrared Test Grade: 10#,20#,45#,16Mn,A53(A,B),A106(B,C),St37,St52,St42,St45,Q235,Q345,Q195,Q215,10#-45#,A53-A369,ST35-ST52,Q195-Q345 Standard: BS 1387,BS EN 39,BS EN10219,JIS G3468-2004,GB/T 3091-2001,DIN 1630,ASTM A53-2007,ASTM A53M-2007,ASTM A252-1998,API 5L,BS,JIS,GB,DIN,ASTM,API,GB3091 BS1387 ASTM A53 ASTM A500