China wholesale Special Pipe - Shaped Seamless Steel Pipe – JINBAICHENG

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China wholesale Special Pipe - Shaped Seamless Steel Pipe – JINBAICHENG Detail:

Product Introduction

made in China
Application: Structural Tube
Alloyed or not: Non-alloyed
Sectional shape: oval
Special tube: API tube
Thickness: 0.5-20 mm
Process: Hot rolled grade: A53 (A, B), API J55, 16mn, Q235, ST37, A53-A369, API J55-API P110, 16mn, Q195-Q345, ST35-ST52
Surface treatment: galvanized

Tolerance: ±5%
Processing services: bending, welding, uncoiling, punching, cutting
Keywords: Shaped tube
Authentication: API
Type: Welded steel pipe
Outer diameter: 60mm
Supply Ability: 10,000 tons/ton/month
Packing details: standard export
Seaworthy packing port: Qingdao

Shaped seamless steel pipe is a general term for seamless steel pipes with cross-sectional shapes other than round pipes. According to the different shape and size of the steel pipe section, it can be divided into equal-wall thickness special-shaped seamless steel pipe (code D), unequal wall thickness special-shaped seamless steel pipe (code BD), variable diameter special-shaped seamless steel pipe (code BJ).

Special-shaped seamless steel pipes are widely used in various structural parts, tools and mechanical parts. Compared with round pipes, special-shaped pipes generally have larger moments of inertia and section modulus, and have greater bending and torsion resistance, which can greatly reduce structural weight and save steel.

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Classification

Steel pipe shaped pipes can be divided into oval shaped steel pipes, triangular shaped steel pipes, hexagonal shaped steel pipes, diamond shaped steel pipes, octagonal shaped steel pipes, semi-circular shaped steel rounds, unequal-sided hexagonal shaped steel pipes, five-petal plum shaped shaped steel pipes , Double convex shaped steel pipe, double concave shaped steel pipe, melon seed shaped steel pipe, conical shaped steel pipe, corrugated shaped steel pipe.
Special-shaped pipes are divided into special-shaped square pipes, rectangular shaped pipes, special-shaped welded pipes, spiral welded pipes, specifications: 20*20mm-500mm, wall thickness 0.6mm-20mm, spiral steel pipe. Spiral steel pipe specifications, 219mm-2020mm, wall thickness 5mm-20mm. Straight stitch specifications are 4 points, 6 points, 1 inch, 1.2 inches, 1.5 inches, 2 inches, 2.5 inches, 3 inches, 4 inches, 5 inches, 6 inches, 8 inches, 102, 108, 127, 133, 139, 159, 168, 177, 194, 219, 273, 325 and other specifications of special-shaped pipes generally refer to rectangular steel pipes.

Special-shaped pipes can be divided into three categories: equal-walled special-shaped pipes, different-walled special-shaped pipes and variable cross-section pipes according to the characteristics of their cross-sections.

Equal wall shaped tube
Equal-walled special-shaped pipes are special-shaped pipes with the same wall thickness and different cross-sectional shapes. Most of these special-shaped pipes are made by cold drawing or welded pipe continuous rolling.

Hetero-Wall Shaped Tube
Different-walled special-shaped tubes are special-shaped tubes with different wall thicknesses. Such special-shaped tubes can be further divided into three types: special-shaped tubes with more than two symmetry axes, eccentric tubes, and different-walled ribbed tubes according to the cross-sectional shape. Special-shaped tube with more than two symmetry axes

The first two types of deformation processes are complicated, and a reasonable forming method (such as extrusion) must be selected according to the characteristics of the section, or formed by drawing or cold rolling of special-shaped tube blanks. As for the folded tube, since its wall thickness is not much different, it is actually basically the same as the production method of the equal-wall folded tube

Longitudinal variable section tube
All special-shaped pipes whose longitudinal section changes periodically or continuously are called longitudinal variable-section pipes, including spiral round-wing pipes, toothed pipes, oblique rib pipes, equal-wall special-shaped torsion pipes, corrugated pipes, and spiral corrugated (convex ribs) pipes. , Javelin barrels and softball bats. The production methods of this kind of tube include hydraulic pressure, spinning rolling, cold drawing, cold rolling and so on. [2]