Different makes use of of steel in agreement with the actual use and working conditions for the various respond to pipe size tolerance, surface quality, substance composition, mechanical properties, process performance, and other special properties such as, different technical conditions.
General seamless steel tubes for conveying water, gas, oil pipelines and manufacture of liquid structural components, the reply to its mechanical properties such as tensile strength (ts), produce strength and elongation for the sample test. Duct generally work under conditions of pressure, also called pressure test done and flaring, squash, curling and other process performance tests. With regard to large-scale long-distance commodity future trading, sophisticated oil, natural gas sewerlines with a pipe is to improve the carbon equivalent, welding performance, low-temperature toughness, stress corrosion under harsh conditions, corrosion, corrosion fatigue strength and corrosion atmosphere and other requirements. Regular boiler tubes used in the manufacture of strength steel pipe and superheated steam boilers boiling water pipes. High-pressure boiler pontoons for high pressure or high pressure superheated vapor boilers, heat exchangers and pipes for high pressure equipment.