Carbon equivalent value CEV of S900MC cold forming autobobile steel for boom

With the development of API5L-B pipeline steel plate technology and the advancement of welded pipe forming and welding technology, the application scope of pipeline welded pipe is gradually expanding, especially the advantages of welded pipe in the range

With the development of API5L-B pipeline steel plate technology and the advancement of welded pipe forming and welding technology, the application scope of pipeline welded pipe is gradually expanding, especially the advantages of welded pipe in the range of large-diameter group spacing are more obvious. In 2004, the output of API5L-B (L245) seamless line pipe was about 400,000 tons. The steel grade includes X42-70, S900MC cold forming autobobile steel for boom, and the varieties include onshore line pipe and subsea line pipe.

The advantages of S900MC cold forming autobobile steel for boom, seamless steel pipe are high pressure resistance, good toughness, long pipe section and few joints. It is widely used and the rolling technology of domestic steel mills is also very mature. Compared with round steel, the weight of seamless steel pipe is lighter under the same strength. Seamless steel pipe manufacturing ring parts, can improve the utilization of materials, simplify the manufacturing process, save materials and processing time. Compared with the welded pipe, there is no weld on the outer surface of seamless steel pipe, and it has good compression resistance.

As the thickness and hardness of S900MC cold forming autobobile steel for boom increase, the tendency to crack at the cutting edge increases. In order to prevent the S900MC cold forming autobobile steel for boom from cutting cracks, preheating should be carried out before S900MC cold forming autobobile steel for boom cutting. Special attention should be paid to preheating to make the entire S900MC cold forming autobobile steel for boom interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole S900MC cold forming autobobile steel for boom cannot be preheated, the partial preheating method can be used instead.

It is a modern high-tech professional enterprise integrating scientific research, S900MC cold forming autobobile steel for boom production and sales. The company is mainly engaged in the manufacture, installation and commissioning of boiler and pressure vessel, chemical, metallurgical, petroleum and other equipment, as well as S900MC cold forming autobobile steel for boom process technology development, technology transfer and related technical consulting and technical services.

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