... butt welding pipe fitting ,alloy steel butt welding pipe fitting 1.name:Tee2.Size:From 1/2" to 48" (Seamless pipe fittings). From ... 26" to 80" (Seam pipe fittings)3.Wall thickness: Sch5-Sch160,XXS4 ... process are made under the ISO9001:2000 strictly. elbow,tee,pipe fitting,flange,reducers,bend,pipe cap