1.Size:1/2"-4",6"-30" 2.pressure:#2000-#9000 3.Material:SS,CS,Alloy 4.Standard:ASME,BS,GOST,eg 5.Certificate:API ... ,ISO,CE,eg size1/2"-4"6"-30"Type Elbow, Tee, Union, Cross, Coupling, Cap, Bushing ... #,6000#,9000#standardASME B16.11,MSS-SP-97, MSS-SP-79,JIS B2316materialCarbon steel(ASTM A105/ A105N/ A694 F42/46/52 ...