Q355GNH cold rolled weathering steel coil sch 80 seamless pipe

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Pressure vessel steel plate is mainly used for manufacturing pressure vessel or other similar equipment for gas separation and gas storage and transportation in petroleum and chemical industry. Generally, the working pressure of Q355GNH cold rolled weathering steel coil pressure vessel steel plate is 320kg / cm2 or 630kg / cm2 under normal pressure, and the temperature is within the range of - 20-450 ° C. It is required that the pressure vessel steel plate has not only certain strength and good plasticity and toughness, but also good cold bending and welding performance.

A335 P22 steel pipe belongs to ferrite alloy steel nominal pipe for high temperature use. Chemical composition of A335 P22 steel pipe: C 0.10-0.20, Mn 0.30-0.80, P ≤ 0.025, S ≤ 0.025, Si 0.10-0.50, Mo 0.44-0.65. Mechanical properties of A335 P22 steel pipe: tensile strength 415mpa, yield strength 205 MPa. Q355GNH cold rolled weathering steel coil, A335 P22 steel pipe is characterized by good process performance, less sensitivity to the heating temperature of heat treatment, good welding performance, good plasticity, and low strength, especially the high temperature rupture strength is lower than 12Cr1MoV steel. When used at the same temperature and stress, its wall thickness is about 30% thicker than 12Cr1MoV Steel.

Quenching is a common heat treatment process. It is the metal heat treatment process in which the Q355GNH cold rolled weathering steel coil metal workpiece is heated to a proper temperature and kept for a period of time, then immersed in the quenching medium for rapid cooling. Quenching can improve the strength and hardness of steel in a large range, and adjust the coordination between Q355GNH cold rolled weathering steel coil strength and hardness, plasticity and toughness. Quenching is generally used as the final heat treatment.

Relying on the background of high-quality steel resources and its own strong steel machining capabilities, BBN comany can not only supply various steel material products, such as steel coils, steel plates, Q355GNH cold rolled weathering steel coil sheet, steel pipes, and shaped steels, but also provide a variety of steel deep processing services like cutting, welding and grinding. Through continuous technological innovation and after-sales service optimization, the company has its own world on the domestic and international steel industry stage!

Enterprise mission: to create value added steel products Q355GNH cold rolled weathering steel coil and provide first-class serviceWe are committed to quality. It is to firmly establish the concept that quality is the life of an enterprise, and make it clear that quality is the decisive factor for the survival and development of an enterprise. Adhere to the quality brand strategy and strive to improve the comprehensive competitiveness with quality as the core.Core values of the enterprise: innovation, dedication and transcendence. It is a highly refined spiritual quality to our staff.