certificate:ks ,ccs,iso9001:2008 certisfication We are profession manufacturer and exporter in carbon steel pipe fittings, we can produce various kind of product such as,tee(equal and reducing), cross, cap, reducer(concentric and eccentric),elbow(L/R,S/R,45/90/180 degree),flange etc. in carbon steel ,alloy steel, stainless steel and steel pipe(seamless pipe, ERW pipe, butt welded pipe, galvanized ...