Spiral steel pipe knowledge: Spiral steel pipe is commonly used standard Spiral steel pipe is commonly used standards are generally divided: SY/T5037-2000 (parts. Also known as ordinary fluid transmission pipeline with spiral seam submerged arc welded steel pipe). GB/T9711.1-1997 ( The national standard. Also called the oil and gas industry transmission steel pipe delivery technical conditions. Part I: A-level steel pipe (to date the current strict requirements of GB/T9711.2 B grade steel)). API-5L (American Petroleum Association. Also called line pipe. It is divided into two grades: PSL1 and PSL2). SY/T5040-92 (spiral submerged arc welded steel pipe for piles). It is a coiled steel strip as raw material, and is often warm extruded to automatically double-wire double-sided submerged arc. The spiral welded steel pipe welded by the welding process is generally higher in strength than the straight seam welded pipe, and the narrower blank can be used to produce a larger diameter pipe, and the same width blank can be used to produce welded pipes of different diameters, but with the same length. Compared with the straight seam pipe, the weld length increases by 30~100%, and the production speed is low.
Stainless steel Angle steel is the two sides perpendicular to each other into the angular shape of the long steel. It is mainly divided into equilateral stainless steel Angle steel and unequilateral stainless steel Angle steel, which can be divided into two kinds of unequal thickness and unequal thickness.
Stainless steel Angle steel can be composed of different forces according to the different needs of the structure, but also can be used as a connection between members. Widely used in a variety of building structures and engineering structures, such as beam, bridge, transmission tower, lifting machinery, ships, industrial furnace, reaction tower, container rack and warehouse shelves.
Stainless steel Angle steel is a carbon structural steel for construction. It is a simple section of section steel. It is mainly used for metal components and the frame of workshop. It is required to have good weldability, plastic deformation and mechanical strength in use. The raw billet of stainless steel Angle steel is low carbon square billet, and the finished stainless steel Angle steel is delivered in hot rolled forming, normalizing or hot rolled state.
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