... in producing saw pipes, oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc.. TYPES: elbows ... -99elbow : 90D , 45D, 180D, LR , SR ,seamless pipe :A106 GR.B / A53 / API5LSIZE : 1/2"- 48"Wall thickness :sch20, sch40, sch80 ,STD , SGP ... , oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc...1. Butt weld Elbow 45degree & 90degree Long Radius & ...