size 1/8"-4" Type screw thread thickness 3000Lbs, 6000Lbs,9000Lbs( SCH80, SCH160, XXS) standard MSS-SP-79 material Carbon steel(ASTM A105, Q235,A350LF2,A350LF3,etc) Stainless steel(ASTM A182 F304, F304L,F316,F316L,etc) Alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70, A182 F12,F11,F22,F5,F9,F91,Etc) qualification ISO9001:2008 ,ISO 14001 OHSAS18001 , API,etc packing in wooded cases or pallets,or as for clients' requirements application Petroleum, chemical, machinery, electric power, shipbuilding, papermaking, construction, etc Special design available as the requirement of customer