ASTM A242 is a kind of high strength low alloy steel with good atmospheric corrosion resistance. Some applications show that it ASTM A709 bridge steel plate has better corrosion resistance than ASTM A36 steel plate and ASTM A572 50 steel plate. Like weathering steel, it can be used without painting, and corrosion naturally stops and becomes a protective layer.
Beijing machining center has more than 1000 employees, including 360 technicians, 28 engineers, 6 senior welders, 15 professional welders, 52 bachelor's degree, 3 doctor's degree, and 8 R & D team. It is a professional ASTM A709 bridge steel plate production team combining theory and practice. With an annual output of 80000 tons, looking forward to the future, our company continues to strengthen the advantages of ASTM A709 bridge steel plate leading suppliers in the four steel fields of steel plate, steel pipe, stainless steel and special steel.
Medium and high carbon alloy hot rolled plates are mainly used in cold rolling and calendering, saw blades and tool industries. The company has taken advantage of smelting, hot rolled ASTM A709 bridge steel plate plate and coil finishing equipment and technical advantages, and has successfully developed a batch of high-carbon and its alloy steel and medium-carbon high-alloy ASTM A709 bridge steel plate steel hot-rolled coils with the goal of replacing imports. The iron oxide scale is delivered and trusted by high-end users.
The effect of Q345B alloy steel plate on the mechanical properties in the annealed state. The strengthening effect of alloying elements on steel in the quenched and tempered state, because it fully utilizes all four strengthening mechanisms. Martensite is formed during quenching, and carbide is precipitated during tempering, resulting in a strong second-phase strengthening, and at the same time greatly improving the toughness. Therefore, obtaining martensite and tempering it is an economical and effective comprehensive strengthening method for steel such as ASTM A709 bridge steel plate.
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