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Carbon steel coils are coils made by smelting, steelmaking and other processes from iron ore containing a certain amount of carbon elements. Its main components are iron and carbon. The carbon content is generally between 0.05% and 2.0%. The difference in carbon content will affect

The advanced grouting small catheter is a technique used in tunnel excavation construction. For the sections that are about to be excavated but have not yet been excavated, the construction technology is to support first and then excavate. The main purpose is to prevent collapse

Seamless steel pipe is an important industrial material and is widely used in petroleum, natural gas, chemical industry, electric power, shipbuilding, bridge building, military industry and other fields. Its unique properties and diverse uses make it an indispensable part of modern engineering. standard The production