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Boiler steel plates for room temperature and medium temperature (below creep temperature) are mostly carbon steel, including carbon steel, carbon manganese steel, carbon manganese silicon steel, Q295GNH atmospheric corrosion resisting steel, etc. They are mainly used in the manufacture of pressure-bearing parts such as boiler drums and header end covers below medium temperature. High temperature (above creep temperature) boiler steel plates are mainly used to manufacture high-temperature pressure-bearing parts such as high-temperature header end caps and steam pipe blocking plates.
As the thickness and hardness of Q295GNH atmospheric corrosion resisting steel increase, the tendency to crack at the cutting edge increases. In order to prevent the Q295GNH atmospheric corrosion resisting steel from cutting cracks, preheating should be carried out before Q295GNH atmospheric corrosion resisting steel cutting. Special attention should be paid to preheating to make the entire Q295GNH atmospheric corrosion resisting steel interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole Q295GNH atmospheric corrosion resisting steel cannot be preheated, the partial preheating method can be used instead.
The Indonesia INKA is the only train carriage maker for railway industry in Indonesia. We cooperated with them since 2012 and supply them SPA-H steel. The SPA-H steel is used by them to fabricate train carriage. We have huge stocks for SPA-H steel and can arrange delivery for them in short time after receiving order. Meanwhile, our product Q295GNH atmospheric corrosion resisting steel quality has passed their test for so many times use. Therefore, they trust us and give us repeat orders regularly. And we also do our best to support them and have never let them down though past cooperations.