... Material 1 ANSI B16.5 1/2"--24" 150-2500LBS BL,SO,SW,LJ,WN,THDF304/F304L,F316/F316LA105, A350LF2, A182 ... B16.47 A(MSS SP-44) 26"--60" 150--900LBS BL,WN F304/F304L,F316/F316LA105, A350LF2, A694,A182 4 BS3293 ... 5 ANSI B16.47 B(API605) 26"--60" 75--900LBS BL,WNF304/F304L,F316/F316L A105, A350LF2,A182 6 ASMEB16.36 ...