Special-shaped seamless pipe is the general term of seamless pipe with other cross-section shapes except circular pipe. According to the different shapes and sizes of steel pipe sections, it can be divided into equal wall thickness special-shaped seamless pipe (code D), unequal wall thickness special-shaped seamless pipe (code BD), variable diameter special-shaped seamless pipe (code BJ). ss400 A36 hot rolled steel plate. Special seamless pipe is widely used in all kinds of structural parts, tools and mechanical parts. Compared with the round pipe, the special-shaped pipe has larger inertia moment and section modulus, larger bending and torsion resistance, which can greatly reduce the structure weight and save steel.
AS3678 belongs to Australian carbon structural steel, AS is Australian number, 3678 stands for carbon structural steel. AS3678 executive standard: AS / NZS, prefixed with WR, indicates that it is better than that of low alloy steel grade in atmospheric corrosion resistance. For example: AS / NZS3678-250 AS / NZS 3678-WR350, where AS / NZS 3678 = the standard number, 250 / 350 = the minimum yield strength of steel, WR = atmospheric corrosion resistance. ss400 A36 hot rolled steel plate, AS3678-350 is a kind of structural carbon steel plate, which is mainly used in buildings requiring low and medium strength carbon steel plates, such as floor and bridge buildings.
The effect of nitrogen on steel performance is similar to that of carbon and phosphorus. With the increase of ss400 A36 hot rolled steel plate nitrogen content, the strength of steel can be improved, plasticity especially toughness can be significantly reduced, weldability becomes worse, and cold brittleness is intensified. Nitrogen with aluminum, niobium, vanadium and other elements can reduce its adverse effects, improve the performance of ss400 A36 hot rolled steel plate steel, can be used as an alloying element of low alloy steel.
Last year, the technicians in the automation department of BBN STEEL closely combined the needs of the production line, based on the big data platform. It has successively developed more than 10 industrial software such as intelligent boiler combustion system, equipment full life cycle system, and integration of environmental protection management and control, which provide efficient and intelligent support for comprehensive support of high-end production line production and lays a solid foundation for high-quality development.
