The company produces seamless steel pipes such as GB, ASTM, etc. all year round, including low and medium pressure boiler steel pipes, high pressure boiler steel pipes, RD 40 shipbuilding marine grade steel plate seamless steel pipes for ships and petroleum cracking RD 40 shipbuilding marine grade steel plate steel pipes, Seamless steel pipe, oil sleeve steel pipe, pipeline steel pipe, hollow sucker rod, common fluid steel pipe, structural pipe, kauden steel pipe, seawater corrosion-resistant titanium pipe and imported alloy steel pipe are used for high-pressure fertilizer equipment. The products are widely used in petroleum, chemical, electric, boiler, ship, machinery and other industries, and have been sold all over the country. Many RD 40 shipbuilding marine grade steel plate products have been exported to the Middle East, India, Southeast Asia and Europe and America.
ASME SA387Gr12CL2 steel plate chromium-molybdenum alloy steel plate has the properties of preventing hydrogen embrittlement, hydrogen corrosion, hydrogen peeling, and sulfide corrosion in a hydrogen environment at medium temperature (350-480 ℃), and has good low temper brittleness. RD 40 shipbuilding marine grade steel plate, SA387 Gr12 CL2 steel plate is widely used in the manufacture of chemical fertilizer, petrochemical and thermal power plant equipment, such as synthetic ammonia reactor, coal gasifier, shift furnace and hydrogenation reactor.
The weldability of RD 40 shipbuilding marine grade steel plate is good. It means that under certain process and construction conditions, RD 40 shipbuilding marine grade steel plate can obtain good performance after welding. Weldability is a measure of the hot workability of steel. Weldability can be divided into weldability in construction and weldability in use. Weldability in construction refers to the sensitivity of cracking in weld metal and near seam zone, and hardening sensitivity of steel in near seam zone. Good weldability means that under certain welding process conditions, the weld metal and steel near the seam do not produce cracks. Weldability in use means that the mechanical properties of weld and HAZ steel are not lower than those of base metal.
Quenching Improve the hardness of RD 40 shipbuilding marine grade steel plate 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 RD 40 shipbuilding marine grade steel plate steel and comprehensive mechanical properties.
RD 40 shipbuilding marine grade steel plate, No.45 seamless pipe belongs to high quality carbon structural steel. The carbon (C) content of No.45 seamless pipe is 0.42 ~ 0.50%, Si content is 0.17 ~ 0.37%, Mn content is 0.50 ~ 0.80%, Cr content is ≤ 0.25%, Ni content is ≤ 0.30%, Cu content is ≤ 0.25%. The tensile strength, yield strength, elongation, reduction of area and impact energy of No.45 seamless pipe are 600 MPa, 355 MPa, 16% and 40% respectively. No.45 seamless pipe is used to manufacture high strength moving parts.
The company specializes in heavy plate cutting, carbon steel pplate processing, carbon plate welding processing and sales of wide and thick steel RD 40 shipbuilding marine grade steel plate plates. It has high-quality CNC steel plate cutting and processing equipment, a professional technical personnel team, and supporting logistics distribution and after-sales service system. BBN company provides customers with solutions at low prices, high quality, and fast response service.
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