butt welding pipe fitting Type: elbow,tee,cap,reducer Standard:ANSI,JIS,DIN Size:1/2"-48"(DN15-1200) Specification : Type: elbow,tee,reducer ... ,union,plug Standard:ANSI,ISO,JIS,DIN Size:1/2"-48"(DN15-1200) Materials: Carbon steel and stainless steel Name:Eccentric reducer and concentric reducer ...