Different utilizes of steel in agreement with the actual use and working conditions for different respond to pipe size tolerance, surface quality, chemical substance composition, mechanical properties, process performance, and other special properties such as, different technical conditions.
General soft steel tubes for selling water, gas, oil pipelines and manufacture of liquid structural components, the response to its mechanical properties such as ultimate tensile strength, produce strength and elongation for the sample test. Duct generally work under conditions of pressure, also known as pressure test done and flaring, squash, curling and other process performance tests. Regarding large-scale long-distance crude oil, sophisticated oil, natural gas pipelines with a pipe is to boost the carbon comparative, welding performance, low-temperature durability, stress corrosion under harsh conditions, corrosion, corrosion tiredness strength and corrosion environment and other requirements. Ordinary boiler tubes used in the manufacture of structural steel pipe and superheated steam boilers boiling water pipes. High-pressure boiler pipes for high pressure or high pressure superheated heavy steam boilers, heat exchangers and pipes for high pressure equipment.