... .Standard:ASME,ANSI,DIN,BS,AS,JIS,GOST 4.Type:SO,LJF,WNF,etc Socket Welding FlangeDescription MaterialCarbon Steel:A105(N) C22 ... , JIS, JPITypeSlip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etcConnectionButt Weld & Socket Weld & ThreadMarkingstandard or as customer’s needInspectionin-house ... to cooperate with us, and create a bright future together. Socket Welding Flange