... QIANDIN PIPE FITTINGS MANUFACTURING CO.,LTD.TYPECarbon steel pipe fittings astm a234 gr wpb-w,seamless ... SCH20/40/80/160, STD/XS/XXS, SGP…….MATERIALcarbon steel: ASTM A234 GR WPB , ST37.2 , ST35. ... , A350 LF2 , A182 F5/F9/F11/F22……stainless steel: A403 WP304/TP304 , WP304L/TP304L , WP316/TP316 , ... also produce according to drawing by customers. Factory-Made Wrought Buttwelding Fitting ASME B16.9-2007