... carbon steel elbow 2.standard:ASME,GB,DIN,JIS,GOST 3.LR,SR 4.certification:API, CCS, ISO9001:2000 5.stock Qi ... Ltd is one of the largest pipe-fittings and carbon steel seamless pipes manufacturers in China.More than 90% of ... Japanese standard, German standard pipe fittings, seamless steel pipe, flange, etc.MATERIALCarbon steel,stainless steel,alloy steelWe can produce according to materials appointed ...