結構用無縫鋼管主要用于一般結構和機械結構。其代表材質：碳素鋼、20、45號鋼；合金鋼Q345、20Cr、40Cr、20CrMo、30-35CrMo、42CrMo等。
輸送流體用無縫鋼管主要用于工程及大型設備上輸送流體管道。代表材質為20、Q345等。
低中壓鍋爐用無縫鋼管是用于制造各種結構低中壓鍋爐過熱蒸汽管、沸水管及機車鍋爐用過熱蒸汽管、大煙管、小煙管和拱磚管用的優質碳素結構鋼熱軋和冷拔（軋）無縫鋼管。代表材質為10、20號鋼。
高壓鍋爐用無縫鋼管是用于制造高壓及其以上壓力的水管鍋爐受熱面用的優質碳素鋼、合金鋼和不銹耐熱鋼無縫鋼管。代表材質為20G、12Cr1MoVG、15CrMoG等。
高壓化肥設備用無縫鋼管是適用于工作溫度為-40~400℃、工作壓力為10~30Ma的化工設備和管道的優質碳素結構鋼和合金鋼無縫鋼管。代表材質為20、16Mn、12CrMo、12Cr2Mo等。
石油裂化用無縫鋼管主要用于石油冶煉廠的鍋爐、熱交換器及其輸送流體管道。其代表材質為20、12CrMo、1Cr5Mo、1Cr19Ni11Nb等。
Seamless steel pipe for structure is mainly used for general structure and mechanical structure. Its representative materials: carbon steel, 20 and 45 steel; Alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35crmo, 42CrMo, etc.
Seamless steel pipe for conveying fluid is mainly used for conveying fluid pipeline on engineering and large equipment. The representative materials are 20, Q345, etc.
Seamless steel pipe for low and medium pressure boiler is a high-quality carbon structural steel hot-rolled and cold drawn (rolled) seamless steel pipe for manufacturing superheated steam pipe, boiling water pipe of low and medium pressure boiler and superheated steam pipe, large smoke pipe, small smoke pipe and arch brick pipe for locomotive boiler. The representative materials are 10 and 20 steel.
Seamless steel pipe for high-pressure boiler is a high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipe used to manufacture the heating surface of water tube boiler with high pressure and above. The representative materials are 20g, 12Cr1MoVG, 15CrMoG, etc.
Seamless steel pipe for high-pressure chemical fertilizer equipment is a high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipelines with working temperature of - 40 ~ 400 ℃ and working pressure of 10 ~ 30mA. The representative materials are 20, 16Mn, 12CrMo, 12cr2mo, etc.
Seamless steel pipes for petroleum cracking are mainly used in boilers, heat exchangers and fluid transmission pipelines in petroleum smelters. The representative materials are 20, 12CrMo, 1Cr5Mo, 1cr19ni11nb, etc.
