How to prevent cracks in nm400 weathering steel cutting

NM400 weathering steel,In production and operation, the company always attaches great importance to product quality Product quality is stable, performance index is superior, after-sales service is in place, the company's products have been exported to the United States, Southeast Asia, Africa, the Middle East and other countries and regions, occupying a large part of the overseas market And a large number of famous enterprises at home and abroad have formed a solid strategic partnership with the company,NM400 weathering steel.

NM400 weathering steel,Q355NH material is a Chinese steel grade to GB/T 4171-2008 atmospheric corrosion resisting structural steel. There are five steel levels under Q355NH: Grade A, B, C, D, and E. Q355NH structural steel sheet is mainly used in vehicles, containers, construction, towers or other structural parts and other structures. It has good resistance to atmospheric corrosion. We supply , Q355NH steel plates thickness less than 120mm.

NM400 weathering steel,Pressure vessel plates are used to manufacture pressure vessel equipment in petrochemical, gas separation and gas storage and transportation equipment. It is required to have sufficient strength and toughness, good welding performance and hot and cold processing performance. The general heat treatment of Q345R plate is hot rolling, controlled rolling, normalizing. The impact temperature is normal temperature, 0 ° C, -20.

NM400 weathering steel,Normalizing is a special case of annealing, the effect is similar to annealing, but the microstructure obtained by normalizing is finer. For low or medium carbon steel, normalizing can improve hardness and machinability. For medium carbon steel and low alloy steel, normalizing can refine grain and uniform structure and reduce hardness. For high carbon steel and high alloy steel, normalizing can eliminate the network carbide produced by forging and improve the homogeneity of the preparation heat treatment structure.

NM400 weathering steel,P235GH steel material number under EN10028-2:2003 standard is 10345 This steel is a European pressure vessel steel P235GH Mechanical properties: Tensile strength σb (350 ~ 480 MPa); Yield strength σs(215 MPa min); Elongation ≥25%; Brinell hardness ≤105 ~ 140 P235GH steel chemical composition (mass fraction,%): ≤016 C; ≤035 Si; 060 ~ 120 Mn; ≤0025 P; ≤0010 S; ≤030 Cr; ≤030 Ni; ≤030 Cu; ≤008 Mo; ≤002 V; ≤002 Nb; ≤0012 N; ≤0020 Al; ≤003 Ti,NM400 weathering steel.

The company's after-sales service tenet is "customer first, timely guarantee, enthusiastic service and effective work". In order to establish a set of perfect after-sales service system and strict management system, so that the after-sales service can be effectively guaranteed. The company has set up after-sales service department to ensure timely, unique and effective response to every user's request, coordinate internal resources internally, and put an end to all evasion and delay.