... Slip-On, Welding Neck, Blind, Socket Welding, Threaded Ring Type Joint FlangeKum Kang fittings Co. specializes in producing Slip ... covers every process of the manufacturing-Raw material inspection,cutting,heating,gorging,heat treatment,machining,drilling,marking,washing, ... final inspection,packing,delivery. Ring Type Joint FlangeSize: 1/2" ~ 64"(DN15 mm ...