... pipesPRODUCTSElbows,reducers,pipe tees,bends,pipe caps ,weldedn neck flanges ,slip on flanges ,blind flanges ,seamless steel pipes ,welded steel pipes ,square ... according to materials appointed by consumers.STANDARDANSI,ASME,API5L,DIN,JIS,BS,GBwe can also produce according to drawing ... -proof black oilRADIUS OF CURVATURE1D-10D ANSI,ASME,API5L,DIN,JIS,BS,GBwe can also produce according to drawing by ...