Real Seamless Elbow Real Seamless Elbow is fitting which uses at corner of pipeline.It has 80% occupation rate of all kinds of pipeline fittings. Real Seamless Elbow has long radius type and short radius type. Long radius type 's curvature radius equal to 1.5 double of NPS pipe,so named as R=1.5D. Short radius type's curvature radius equal to 1 double of NPS pipe,so named as R=1D. D is Elbow Pipe's elbow diameter,R is curvature radius. Real Seamless Elbow has hot forming type,press type and also cold forming type. Carbon steel elbow is widely producing by hot forming machine. Stainless steel elbow with thinner thickness normally produced by cold forming type. Real Seamless Elbow shean(cangzhou)corp ltd also manufacture Hot Elbow Machine,PLC Pipe Expanding Machine,Bending Machine etc.welcome to visit our shean.