What is the production process of GB stadard of nm500 steel

The effect of nitrogen (N) on the properties of GB stadard of NM500 steel and so on steel is similar to that of carbon and phosphorus. With the increase of nitrogen content, the strength of steel can be significantly improved, especially the plasticity, especially toughness, and the weldability will be decreased, and the cold brittleness will be intensified. At the same time, aging tendency, cold brittleness and hot brittleness will be increased, which will damage the weldability and cold bending property of steel. Therefore, the nitrogen content in GB stadard of NM500 steel and so on steel should be reduced and limited as much as possible. Generally, nitrogen content should not be higher than 0.018%.

Hardness is the characteristic of providing excellent wear-resistant protection during the whole service life of wear resistant steel plate. High hardness minimizes wear because the sharp edges of the abrasive are difficult to cut into a hard surface. Wear resistant steel plate can be used for bucket, loader, dump truck, powder concentrator, chute and various wear-resistant lining plates. GB stadard of NM500 steel, Wear resistant steel plate can withstand any form of wear from a variety of rocks, sand and gravel.

We have 4 typical production lines, which can produce hot rolled Seamless, LSAW, ERW and SSAW pipes. SSAW pipe production line range is OD 219.1mm-3500mm, wall thickness 3.2mm-25.4mm. Product GB stadard of NM500 steel annual capacity is 200 thousand tons.

The mooring chain is immersed in seawater for a long time and the service environment is harsh. Therefore, it must have high strength, good toughness, seawater corrosion resistance, fatigue resistance, wear resistance, etc., and in practical applications, it usually needs to be bent into a ring. Therefore, it is necessary to have good cold bending and welding performance. At present, China has successfully developed the world's first R6 mooring with the highest strength level, and realized its application, leading the development of the latest generation of marine mooring chains.