Wear-resisting rolling pipe transport has been throughout the electric power, metallurgy, coal, petroleum, chemical, building materials, machinery and other industries, and high-speed development. Wear-resisting rolling pipe were is a universal phenomenon

Steel casing pipe protects one or many of various types of utilities such as water mains, gas pipes, electrical power cables, fiber optic cables, etc. The utility lines that are run through the steel casing pipe are most commonly mounted and spaced within

The steel casing tube is in the process of manual digging of piles. Due to the unstable soil, it is difficult to construct reinforced concrete walls. Therefore, steel protective walls are used to protect the piles to prevent the hole from collapsing and a

Establish the quality assurance system and post responsibility system for steel casing pipe, improve the quality management system, clarify the division of responsibilities, implement the personnel, ensure the efficient operation of the system.