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Our company attaches great importance to technical support and after-sales service, and has established a customer service center to provide unified technical support and service for S355J0W and S355J2W steel comparison various engineering projects. Customer service center has a strong technical force of technical service team, composed of a customer service center manager, several S355J0W and S355J2W steel comparison after-sales service personnel, responsible for unified acceptance and processing of local after-sales service needs.
Grade Q420 steel has high strength, especially in the normalizing or normalizing and tempering state. S355J0W and S355J2W steel comparison, Q420 steel has high comprehensive mechanical properties. Q420 steel is mainly used for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, hoisting machinery, mining machinery and other large welded structural parts. Grade Q460 steel, with high strength, has high comprehensive mechanical properties in normalizing, normalizing and tempering or quenching and tempering states. The quality grades are C, D, E. Q460 steel is used in various large engineering structures and light structures requiring high strength and heavy load.
Quenching Improve the hardness of S355J0W and S355J2W steel comparison steel, Annealing is refine the grain size, homogenization, reduce hardness, improve the plasticity and eliminate interna stress. Normalizing refine grain , improve the impact toughness of S355J0W and S355J2W steel comparison steel and comprehensive mechanical properties.
In 2016. Our company offer 1200 tons API 5L GR.B hot rolled coil to Bangladesh——100 tons for 3.9*625mm, and 1100 tons for 7*683mm. It is one tender project, we get the tender at the end of 2015, and arrange the production in 2016. They required the tolerance of thickness is +0.1/-0.2mm, and width tolerance is +/-0.5mm, which is a very high requirement for coil tolerance, but our mill handling this very well. and our Q/C department witness all of the process.