Precision Pipe 10*0.5 Precision Steel Pipe Precision Bright Steel Pipe Manufacturer

Precision pipe 10*0.5 precision steel pipe precision bright steel pipe manufacturer

Precision pipe 10*0.5 precision steel pipe precision bright steel pipe manufacturer.

Stainless seamless pipe for structure (GB / T14975-1994) is a hot-rolled (extruded, expanded) and cold drawn (rolled) seamless pipe, which is widely used in chemical, petroleum, textile, medical, food, machinery and other industries for corrosion-resistant pipes, structural parts and components.

In addition to carbon (c) and silicon (SI) (generally no more than 0.40%) and manganese (MN) (generally no more than 0.80%, up to 1.20%) alloy elements for deoxidation, the structural tube does not contain other alloy elements (except residual elements).

The chemical composition and mechanical properties must be guaranteed at the same time. The content of sulfur (s) and phosphorus (P) impurity elements is generally controlled below 0.035%. If the control is less than 0.030%, it is called high-quality pipe, and the "a" shall be added after the brand number, for example, 20A; if the P control is less than 0.025% and the s control is less than 0.020%, it is called super quality structural pipe, and the "e" shall be added after the brand number to show the difference. The content of other residual alloy elements, such as chromium (CR), nickel (Ni), copper (Cu), etc., brought into the structural tube by raw materials, is generally controlled at Cr ≤ 0.25%, Ni ≤ 0.30%, Cu ≤ 0.25%. Some brands of manganese (MN) content up to 1.40%, known as manganese.

Precision pipe 10*0.5 precision steel pipe precision bright steel pipe manufacturer.The seamless pipe with small outer diameter can be called small-diameter seamless pipe. The small-diameter seamless pipe can also be divided into: seamless small-diameter steel pipe and straight seam (also known as welding) small-diameter seamless pipe, which are generally less than 89mm in outer diameter and more than 4mm in outer diameter; they can be collectively called small-diameter seamless pipe. Small caliber seamless pipe is a kind of circular, square and rectangular steel with hollow section and no joints around. Seamless tube is made of steel ingot or solid tube blank by piercing and then hot rolling, cold rolling or cold drawing. Seamless steel pipe has hollow section, which is widely used as the pipeline for conveying fluid. Compared with solid steel such as round steel, steel pipe is a kind of economic section steel with the same bending and torsional strength, and its weight is lighter. It is widely used in manufacturing structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffold used in construction

Precision pipe 10*0.5 precision steel pipe precision bright steel pipe manufacturer.The solid tube blank is cut to the required length by checking and removing the surface defects, centring on the end face of the piercing end of the tube blank, and then sent to the heating furnace for heating, punching on the piercing machine, and continuously rotating and advancing at the same time of piercing. Under the action of the roll and the plug, the inner part of the tube blank gradually forms a cavity called the blank, and then sent to the automatic tube rolling machine for continuous rolling, and finally the whole machine is uniform in wall thickness, It is an advanced method to produce hot rolled seamless tube by continuous tube mill. If we want to get smaller size and better quality seamless tube, we must use cold rolling cold drawing or the combination of the two methods to cold rolling, The steel tube is rolled in a circular pass composed of a variable cross-section circular hole groove and a fixed cone-shaped head. The cold drawing is usually carried out on a single chain or double chain cold drawing machine by the extrusion method, that is, the heated tube blank is placed in a closed extrusion cylinder and the perforated rod moves together with the extrusion rod, so that the extrusion part is extruded from the smaller die hole. This method can produce steel tube with smaller diameter.

Precision pipe 10*0.5 precision steel pipe precision bright steel pipe manufacturer.