... welding-neckA105, A350LF2,A182 F304/F304L,F316/F316L3ANSI B16.47 A(MSS SP-44)26"--60"150--900LBSBL,WNA105, A350LF2, A694 ... B2220 STANDARD10A-1500APN5K,10K,16K,20K,30KSOP(PL) SOH(SO A B C ) WNJIS G3101 SS41JIS G3201 SF40A(S20C)AND SF45A ... 1.4541 1.4571/DIN17440 carbon Forged steel weldneck Flanged grade A-105N