| Oil cracking of the main pipeline for the
transportation of fluids, such as the drawing deliver oil, natural gas,
gas, water and some solid materials, such as pipelines. And the solid
steel bar, and other than the bending of the torsional strength, lighter
weight, is an economic cross-section steel, widely used in the
manufacture of precision steel tube structural and mechanical
components, large-diameter pipe such as oil drilling pipe, car Shaft,
Zixingjujia and construction of steel scaffolding used.
 |