... ,ASTM SIZE;DN15-DN1200 Wall thickness:2-60mm NAME:three direct linksMaterial:10#,20#,Q235,20g,16MnMaterialMaterial carbon steel:20#,WPB ... A06-B, 20G.alloy steel :16MN,12CRMO,15CRMO,1CR5MO,12CR1MOVstainless steel.321 ... . A conformity rate of ex-factory inspection of products. three direct links