用seamless tube造句子，“seamless tube”造句

Perennial the same time, the company in charge of operating companies : Panzhihua (Chengdu), Baotou, Tianjin (large seamless), metallurgical Steel, Anshan, Baoshan, Hengyang and other steel seamless tube production quality.

Tubing: usually round in cross-section, and also shaped in section. By the way of making, tubes can be classified into seamless tube, and welded tube.

Now the reserve amounts to 20,000 tons, over a thousand kind of models, are the national scale big seamless tube Support bases.

Glass lubricated hot extrusion process is an excellent method of making seamless tubes of stainless steel, heat-resistant steel and nickel-based alloy.