1. Automotive pipes (for Buick cars) small diameter high pressureBoilerPipes produced according to domestic and international standards or industry standards 210C, 15CrMoG, 12Cr1MoVG, T12～T91 seriesSteel pipes 2. Pipeline pipes for the West-to-East Gas Transmission Station GB/T9711.2 L245NB Φ1146, Φ895 etc. 3. Subsea oil pipeline API5L X52 PSL2 Φ8910, Φ114.311.1 4. Oilfield pipes N80 non-heat-treated pipe API 5CT Φ139.77.72 J55 oil pipe API 5CT Φ735.51 5. Special truss arm pipes (integral heat-treated pipes) protocol standards, 20Mn2B, 20Mn2, Φ14615 etc., used for crawler tower crane lifting equipment 6. Special cylinder andBracketPipes T91, steel102 series high-pressure boiler pipes GB5310-1995, used in thermal power plants under high temperature and high pressure environments 7. Tractor rear axle pipe 35MnVN, rear axle of crawler tractors 8. Ultra-high strengthStructural pipe35CrMnsi, 30CrMnSiNi2A, used for military industry and aircraft landing gear pipes 9. Axle pipe for vehicles 20Mn2, Φ17812, Φ12719 etc. 10. Rock stratum pipe protocol standard J55, Φ266, Φ316 etc., used for highway and large hydropower station dam reinforcement 11. Hydraulic support pipe GB/T17396-1998,27SiMn, used for coal machine underground operation support fixed according to American standard produced medium carbon steel boiler and superheater无缝Steel pipesASTM A210、210C、Φ606 14、叉杆用无缝管CR-1、Φ485，用于火车提速用的CR转向架交叉杆 15、火箭炮用定向螺旋异型无缝管Φ1232.2、MP16Mn、GJB459-88 16、抗海水腐蚀管Q/CG41-1994、10CrMoA1、Φ1084、Φ252.5 17、潜油电机轴管协议标准Φ3111、Φ3613.5、40Cr、35CrMo、35CrMoV，用于抽油泵的电机轴 18、低温管道用管GB/T18984-2003、09DG、10MnDG、09Mn2VDG、B655，用于石化行业处于低温环境的流体输送管道、核电站用管、军工用纯铁管DT3 19、710超强炮身用管 20、直九机管15CDV6 21、锅炉、热交换器用不锈无缝管GB13296-1991、0Cr18Ni9Ti、0Cr18Ni11Ti、Φ1928900等 23、曳光破甲弹压环用管SAE1035、Φ1009.5。 | 
