little thai slut filled face fucked

  • Introduction to precision tube

    Precision pipe is a kind of seamless steel pipe with high precision and high brightness produced by cold drawing or cold rolling process. Its inner and outer diameter can be less than 0.2mm, which ensures the bending and torsion strength, and has light weight. Therefore, it is widely used in manufacturing precision mechanical parts and engineering structures.

  • 20 กม 10 precision tube tempering

    The alloy elements in 20 ? precision tube have great influence on low temperature temper brittleness. Chromium and manganese promote the segregation of impurity elements such as phosphorus at austenite grain boundary, thus promoting low temperature temper brittleness. Tungsten and vanadium have no effect on it.

  • Annealing treatment of 45 mm precision tube

    45 ? precision pipe is widely used to eliminate residual stress by annealing after welding cooling, and cooling after welding is an important process of residual stress generation, which not only wastes energy but also easily produces large welding residual stress.

  • one
  • two
  • three

Over the past few years, through the hard work of all the staff and the friendly cooperation of brother units, the company can accurately grasp the information and opportunities in the steel circulation market, accumulate and improve continuously with a fast speed, and have gained the trust of customers with perfect service and excellent products.
Long term sales Precision tube กข 20 กม 10 precision tube กข 45 mm precision tube Precision pipe products of various specifications, such as complete material specifications, are used to manufacture mechanical structure, hydraulic equipment, automobile parts, steel sleeve. Materials: 10, 20, 35, 45, 20Cr, 40Cr, 20CrMo, 16Mn, 27SiMn, 304, 201, 310S, carbon structural steel.
The company always adheres to the market-oriented, customer-centered, quality as the lifeblood of the enterprise, integrity as the foundation of enterprise governance, adhere to the principle of serious and rigorous, steady progress and continuous development. In the industry has established a variety of service systems, and with good reputation, low price reputation in many parts of the country.

  • 20% precision tube Market
  • Precision tube manufacturer
  • Price of precision tube
  • Steel pipe knowledge
daddy4k papa intelligent ne perd pas sa chance davoir des relations sexuelles avec ses fils nouvelle copine vrallure busty ebony beauty daizy cooper plays with her sex toys in virtual reality certain men like to enjoy shaved pussies it gives them better visibility and juicier hole daddy4k sweetie and boyfriends old dad celebrate her birthday with sex lustful old granny rides two cocks daddy4k papa intelligent ne perd pas sa chance davoir des relations sexuelles avec ses fils nouvelle copine vrallure busty ebony beauty daizy cooper plays with her sex toys in virtual reality certain men like to enjoy shaved pussies it gives them better visibility and juicier hole daddy4k sweetie and boyfriends old dad celebrate her birthday with sex lustful old granny rides two cocks