- Galvanized special-shaped steel pipes can be divided into oval special-shaped steel pipes, triangular special-shaped steel pipes, hexagonal special-shaped steel pipes, rhombus special-shaped steel pipes, octagonal special-shaped steel pipes, semi-circular special-shaped steel pipes, unequal hexagonal special-shaped steel pipes, and five-petal plum blossom shaped special-shaped steel pipes. Steel pipes, double convex special-shaped steel pipes, double concave special-shaped steel pipes, melon-shaped special-shaped steel pipes, conical special-shaped steel pipes, corrugated special-shaped steel pipes.
- The galvanizing process makes it more protective and resistant to corrosion. The entire structure is made of zinc, forming a dense quaternary crystal. This crystal forms a barrier on the steel plate, thus effectively preventing corrosion factors from penetrating. Corrosion resistance comes from the strong protective barrier layer of zinc. When zinc provides sacrificial protection on trimmed edges, scratches, and scratched parts of the coating, the zinc forms an insoluble oxide layer and plays a barrier protective function.
- Implementation standards：GB/T 8162, GB/T 8163, EN10147, EN10142, DIN 17162, JIS G3302, ASTM A653, etc.
- Steel grade：Dx51D,Dx52D,Dx53D,DX54D,S220GD,S250GD,S280GD,S350GD,S350GD,S550GD;SGCC,SGHC,SGCH,SGH340,SGH400,
SGH440,SGH490,SGH540,SGCD1,SGCD2,SGCD3,
SGC340,SGC340,SGC490,SGC570; SQ CR22 (230), SQ CR22 (255),SQ CR40 (275),SQ CR50 (340),SQ CR80(550),CQ,FS,DDS,EDDS,SQ CR33 (230),SQ CR37 (255),SQCR40 (275), SQ CR50 (340),SQ CR80 (550),etc. - Special-shaped steel pipes are widely used in various structural parts, tools and mechanical parts. Compared with round pipes, special-shaped pipes generally have a larger moment of inertia and section modulus, and have greater bending and torsion resistance, which can greatly reduce the weight of the structure and save steel.
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