Polyurethane insulation steel pipe
November 5, 2018

ASTM A53 seamless steel pipe

Seamless Steel Pipe

A53 seamless steel pipe A106 seamless steel pipe American standard seamless steel pipe production process.
Generally used seamless pipe: it is made of 10, 20, 30, 35, 45 and other high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot-rolled or cold-rolled, American standard API5L GR.B seamless steel pipe GB 20# seamless steel pipe. Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid conveying pipes. 45, 40Cr and other medium carbon steel seamless pipe used to manufacture mechanical parts, American standard seamless steel pipe, API5L American standard seamless steel pipe general material, ASTM A106 A53, can be replaced by domestic 20# steel, American standard steel pipe export packaging The requirements are also very strict, fixed length, baling, painting, caps, and spray markings must be done. Mainly in the sea drifting fear of seawater corrosion. Such as the force parts of cars and tractors.

Generally, seamless steel pipes are required to ensure strength and flattening test. The hot rolled steel pipe is delivered in a hot rolled state or a heat treated state; the cold rolling is delivered in a heat treated state. Production methods can be divided into hot-rolled tubes, cold-rolled tubes, cold-drawn tubes, extruded tubes, etc. according to different production methods.

Hot rolled seamless pipes are generally produced on automatic pipe rolling units. The solid tube blank is inspected and the surface defects are removed, cut into the required length, centered on the end face of the perforated end of the tube blank, then sent to a heating furnace for heating and perforated on the punching machine. At the same time, the perforation is continuously rotated and advanced. Under the action of the roll and the head, a cavity is gradually formed inside the tube blank, which is called a capillary tube. It is sent to the automatic pipe mill for further rolling. Finally, the whole machine is uniform in wall thickness, and the sizing machine is sizing to meet the specification. The production of hot-rolled seamless steel tubes by continuous rolling mills is a more advanced method. For smaller tubes of better size and better quality, cold rolling, cold drawing, or a combination of the two must be used. Cold rolling is usually carried out on a two-roll mill in which the steel pipe is rolled in an annular hole formed by a variable-section circular hole groove and a stationary tapered head. Cold drawing is usually carried out on a single-chain or double-chain cold drawing machine of 0.5 to 100T. The extrusion process is to place the heated tube blank in a closed extrusion cylinder, and the perforated rod moves together with the extrusion rod to extrude the extrusion from the smaller die hole. This method can produce steel pipes with smaller diameters. Cold drawn or cold rolled precision seamless pipe (GB3639-83) is a cold drawn or cold rolled precision seamless pipe with high dimensional accuracy and surface finish for mechanical structures and hydraulic equipment. The use of precision seamless pipes to manufacture mechanical structures or hydraulic equipment can greatly reduce machining time, improve material utilization, and improve product quality. Hot-rolled seamless pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.


American Standard Seamless Steel Pipe is a long strip of steel with a hollow section and no seams around it. The steel pipe has a hollow section and is used as a pipe for conveying fluid. The standard stainless steel pipe standard is such as pipeline for transporting oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, the steel pipe is lighter in weight when it has the same bending and torsional strength. It is an economical section steel and is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycles. Shelf and steel scaffolding used in construction. The use of steel pipes to manufacture ring-shaped parts can improve material utilization, simplify manufacturing processes, save materials and processing man-hours, such as rolling bearing rings, jacks, etc., and have been widely used in steel pipes. Steel pipes can be divided into round pipes and shaped pipes according to the shape of the cross-sectional area. Since the area of ​​the circle is large under the condition of equal circumference, more fluid can be transported by the circular tube. In addition, the circular section is subjected to a relatively uniform force when subjected to internal or external radial pressure, and therefore, most of the steel pipes are round pipes.

    American standard seamless steel pipe ASTM/A53 Gr.B general purpose seamless steel pipe, ASTM/A106/A53 Gr.B chamfered chamfered inverted steel pipe, Bs1387-1985 British standard erw high frequency welded pipe and galvanized Tube, ASTM/A333 -40°C-101°C low temperature seamless steel tube. ASTM/A179 seamless steel tube for heat exchanger and condenser. Steel tube length: 5.8 m fixed length, 6 m fixed length, and up to 12 m long Ruler, can also be fixed according to user needs.

    The outer diameter of the product is 1/2′′-28′′, 21.3-711.2mm, wall thickness SCH30, SCH40, STD, XS, SCH80, SCH160, XXS etc. The seamless tube can be surface treated as required, with plastic tubes at both ends. The cap can be chamfered as required and can be inspected.


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