SPECIFICATION:ANSI B 16.5, ANSI B 16.47, JIS B2220, MSS -SP44 MATERIAL:A105, RST-37, SS304, SS316, SS304L SUPPLY:WN, BLD, SO MAIN PRODUCTS:1)ASME B16.5WELDING NECK, SLIP ON, THREADED FLANGE, BLIND, LAP JOINT, SOCKET WELDING.2)BS4504CODE 101, CODE 105, CODE 111, CODE 112, CODE 1133)ENTYPE 01, TYPE 02, TYPE 05, TYPE 11, TYPE 12, TYPE 134)DINDIN2566, DIN2576, DIN2632, DIN2633, DIN2634, DIN2635, ...