... , AS, SS HEBEI QIANDIN PIPE FITTINGS MANUFACTURING CO.,LTD.TYPECarbon steel pipe fittings astm a234 gr wpb-w,seamless pipe fittings ... , butt welding pipe fittings, steel pipe fittings, carbon steel pipe fittings(CS pipe fittings), mild steel pipe fittings(MS pipe fittingsSIZENPS1/2 ... /10S, SCH20/40/80/160, STD/XS/XXS, SGP…….MATERIALcarbon steel: ASTM A234 GR WPB , ST37.2 , ST35.8 , A105…… ...