1. Boiler tube ASTM SA106, ASTM SA210 material ASTM SA106B/C, ASTM SA106A/C model & 8-1240 * 1-200 is mainly used in the manufacture of high pressure boiler tube, header, steam pipe, etc. 2. The transmission fluid pipe, ASTM A106 ASTM A53, material ASTM A106A, (B, C), A53A up, B, 16 mn model & 8-1240 * 1-1240 general seamless steel tube is mainly suitable for conveying fluid. 3. The API SPEC 5 ct material J55 casing, K55, N80, L80 model & 60.23 508.00 it is mainly used for extraction of oil or gas in oil Wells casing used in oil and gas well sidewall. 4 line pipe, API SPEC 5 X42 material, X46 and X52 models & 32-1240 * 3-1240 is mainly used in oil, natural gas industry in oxygen, water, oil pipeline