◆  Production process
        The company has production equipment and advanced vortex diction instrument that is manufactured by German; diameter shrinkage equipment that is imported from America and can guarantee clean, smooth and non-damage inner wall; most advanced automatic natural gas high temperature annealing furnace that the temperature can reach1000℃ and eliminate inner stress during production process completely and make fine texture accord mechanical performance; advanced roller type tube-making and diameter shrinkage equipment; the hydraulic pressure test working procedure is changed into 100% hydrostatic pressure routine working procedure that the pressure should not be less than 60kg and guarantee quality. Meanwhile, the engineers and technicians are professional workers with powerful experiences who can guarantee production technology and quality.     

    ◆  Characteristics
    √ High precision
        The real warp of steel tube diameter is ±8.3%; the warp of wall thickness is ±7.1% by using advanced production equipments, which is smaller than diameter tolerance12.5% and wall thickness tolerance 10% regulated by GB/T8163-1999. Meanwhile, it can guarantee straightness; the straightness of every meter steel tube is 3m/m; it can also eliminate partial wall and Permian edge etc. Furthermore, the company can adjust kinds of steel tubes to manufacture non-standard and special material.      
    √ Quick speed
        The speed of seamless steel tube by traditional technology is about 10m/min; however, the speed of manufacturing steel tube by advanced equipments in our company can be over 30m/min; it can manufacture 100tons by 89 machine units, manufacture 150tons by 159 machine units, manufacture 200tons by 325 machine units that will be 4-5times of same traditional product line. 
    √ Quality assurance
        Every steel tube manufactured by our company has experiences lots of working procedures such as diameter shrinkage, online vortex diction, and high temperature anneal and hydrostatic pressure etc. There is professional worker to control every working procedure strictly; all unqualified products are kept in wastrel storage; not permitting one meter of unqualified product leaving factory is our principle.  
    √ All-sided working procedure
        Production equipment with German technology, vortex detection equipment with advanced domestic technology and diameter shrinkage technology equipment with American technology guarantees smooth, clean and non-damage inner wall; the most advanced automatic natural gas high temperature annealing furnace that the temperature of annealing can reach 1000℃; 100% hydrostatic pressure routine hydrostatic test working procedure that the pressure is not less than 60kg; the above equipments guarantee quality and enhance performance.