Langfang Dingyang Flange Pipe Fitting Co.,Ltd is one of the leading companies dealing in exporting pipe fittings, flanges and tubes etc. Our product range includes:Carbon, alloy and stainless steel pipes in various grades including PI5CT,API5L,ASTM, ISO,JIS,ST, DIN, GB/TCarbon, alloy and stainless steel fittings and flanges including ANISI, ASME, JIS, DIN, NPT etc.Carbon and Stainless steel valves including ANISI, API, JIS, DIN, NPT.