China wholesale Special Pipe - Shaped Seamless Steel Pipe – JINBAICHENG

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.

Product Display

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]

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