... steel pipesMATERIALCarbon steel,stainless steel,alloy steelWe can produce according to materials appointed by consumers.STANDARDANSI,ASME,API5L,DIN,JIS,BS ... ASME,API5L,DIN,JIS,BS,GBwe can also produce according to drawing by customers.CERTIFICATESISO-9001:2000,API5L,,CCSWe have ... biggest pipe fittings and steel pipes production equipment in china,all of prodcts are produced by ourself,so we can give ...