Welding grade S420ML steel plate steel asme equivalent

Steel pipe S420ML steel plate manufacturing, environmental protection equipment and other manufacturers supply steel products, which have been well received by new and old customers. Steel sales have maintained a strong growth momentum and have achieved a good reputation in the steel industry. The S420ML steel plate company has a young, energetic and service spirit, high-quality management team.

S420ML steel plate surface cracks refer to the linear cracks on the surface of S420ML steel plate, which should generally be the same as the forging or rolling direction. Formation reason: it is mainly due to the hairline, hot crack and cold crack caused by surface over burning, decarburization, looseness, deformation and excessive internal stress during processing (forging, rolling, heat treatment, quenching and tempering), as well as the high content of sulfur and phosphorus impurities on the surface. Inspection method: S420ML steel plate surface cracks can be detected by naked eye observation, acid pickling, magnetic particle inspection, coloring inspection and metallographic method.

At present, there are many cutting methods for S420ML steel plate steel plate cutting, such as common flame cutting, plasma cutting and laser cutting. Different cutting methods correspond to different cutting tools and cutting equipment. Therefore, based on this point, we can know that the answer to this question is yes, that is, there are many tools and equipment involved in S420ML steel plate steel plate cutting, You can choose according to the cutting mode.

The difference between q345 and q235 steel S420ML steel plateThe lower limit of yield strength of Q345 is 345MPa (the actual meaning of Q is the Chinese character "qu", and the standard value behind means the lower limit of yield strength). Q235 steel is used for metal structural parts, nitrided or cyanidized parts with low core compressive strength requirements, support rods, crankshafts, crane hooks, couplers, bolts and nuts, sleeve specifications, shafts and weldments.