Yanshan Qianyi Pipe Industry Co., Ltd supply all the kinds steel pipes and pipe fittings. The standard: ASTM , JIS, DIN , GB/ T And the API products run in accordance with API 5L . * Pipe: seamless pipe, stainless pipe, alloy pipe, galvanized pipe , ERW, SSAW * Fittings: elbow, tee, flange, reducer, cap * API 5L Used for conveying gas , water, and oil in both the oil and natural gas industries. Material: A/ B/ X42-X80 Size: 1/ 8â -36â