... steel pipe 1.material:Astm a 53/106/ API 5LA/B,ST37,ST35.8;Standard:ASTM,DIN,JIS 2. ... steel pipeSize1/2"-32"Wall thicknessSch5-Sch160XXSStandardASME B36.10M-1996 ,API ,ANSI ,GB, SH,HG, MSS,JIS,DINMaterialASTM A106 GRB/ A53 ... GRB/ API 5L GRB/ API 5 CT /Q345/A335/ST37/ST52Packagingpainting black, pipe cap ...