... in high temperature large diameter and thick wall pipe. As it is reliability, cheap, simple, good for flow, seriation, standardization ... welding, socket-welding and thread. TypeConnected typeGB19326 Socket weldedGB19326 Pipe threadGB19326 Butt-weldedStandardSOL (MSS SP-97,Q/FG11)TOL ... Nipple,Hexagonal Nipple,etc ♥We are manufacturer of steel pipe&fittings, like 45deg/90deg/180deg elbow,equal or ...