A131 EH36 steel is high strength marine grade hull structural steel. Its yield strength is no less than 355Mpa, tensile strength is 490-620 Mpa, and elongation is 19% min. RINA DH36 ship repairing steel plate, EH36 steel strength is close to S355 steel. However, EH36 steel is shipbuilding steel, while S355 steel is carbon structural steel, and can not be certified by classification society. That is to say, S355 steel is not allowed to be used for ship building when there is certificate requirement. A131 EH36 steel is widely used to build ships working in low temperature water.
Today, the domestic financial market generally recovered, boosting market confidence, the purchasing activity increased, and RINA DH36 ship repairing steel plate prices rose. At present, the current steel production enthusiasm is high, RINA DH36 ship repairing steel plate production continues to maintain a high level. At the same time, the market has certain expectations for the release of demand in the peak season, and RINA DH36 ship repairing steel plate consumption is expected to improve in the later stage. Under the prosperous supply and demand, it is expected that the short-term RINA DH36 ship repairing steel plate prices will be strong.
TMCP process is an important means to improve the comprehensive properties of steel. It can be used to produce ship plate, vessel plate, boiler plate, bridge steel, etc. Compared with the normalized steel of the same strength grade, TMCP can reduce the alloy content of the RINA DH36 ship repairing steel plate steel, reduce the carbon equivalent and improve the welding performance. TMCP is more and more widely used in various types of steel rolling industry.
Generally, the production process of RINA DH36 ship repairing steel plate seamless steel tube can be divided into cold rolling and hot rolling. The production process of cold-rolled seamless steel tube is generally more complicated than that of hot rolling. The tube blank must be first rolled by three rolls, and then be subject to sizing test and cutting after extrusion. Then enter the annealing process. In appearance, the cold-rolled seamless steel tube is shorter than the hot-rolled seamless steel tube, and the wall thickness of the cold-rolled seamless steel tube is generally smaller than that of the hot-rolled seamless steel tube, but the surface looks brighter than the thick wall seamless steel tube, the surface is not too rough, and the diameter is not too much burr.
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