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Knowledge of stainless steel Your current location: home page /Stainless steel knowledge / stainless steel pipe manufacturer - 304 stainless steel pipe standard and appearance quality
Stainless steel pipe manufacturer - 304 stainless steel pipe standard and appearance quality
Double click auto scroll Published by: lcqywlzx published on: November 29, 2016 read: two thousand three hundred and fifty Secondary [font: large in Small

Stainless steel pipe Manufacturer- 304 stainless steel pipe Standard and appearance quality

Stainless steel pipe manufacturer's standard and appearance quality
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1. According to GB 14975-94 "stainless steel" seamless steel tube 〃Regular, steel pipe general length (indefinite) hot rolled steel pipe 1.5 ~ 10 m, hot extrusion steel pipe equal to or greater than 1 m. For cold drawn (rolled) steel pipe with wall thickness of 0.5-1.0 mm, 1.0-7 M; When the wall thickness is greater than 1.0 mm, it is 1.5-8 M. ?
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2. There are 45 kinds of hot-rolled (hot extruded) steel pipes with diameters of 54-480mm; There are 36 species with wall thickness of 4.5-45 mm. There are 65 kinds of cold drawn (rolled) steel pipes with diameter of 6-200 mm; There are 39 species with wall thickness of 0.5-21mm. ?
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3. The inner and outer surface of steel pipe shall be free from cracks, folding, cracking, cracking, rolling, delamination and scabbing. These defects shall be completely eliminated (outside the pipe for machining), and the wall thickness and outer diameter shall not exceed the negative error. Any other minor appearance defects that do not exceed the allowable negative error can not be eliminated.
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4. The allowable depth of straight line. Hot rolled and hot extruded steel pipes with diameter less than or equal to 140mm shall not be more than 5% of the nominal wall thickness, and the maximum depth shall not be greater than 0.5mm; Cold drawn (rolled) steel pipe shall not be greater than 4% of the nominal wall thickness and the maximum depth shall not be greater than 0.3mm. ?
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5. Both ends of steel pipe shall be cut into right angles and burr shall be removed. The above are stainless steel welded pipe and Stainless steel seamless pipe The difference.

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    Tel: 0510-88268567, 88264321, 88268136 ?? Fax: 0510-88269156 ?? Mobile phone: 18921237777 ? eighteen billion fourteen million two hundred and fifty-eight thousand five hundred and sixty-seven ? 18921511196 13812042226
    Wuxi xinxianghe Steel Pipe Co., Ltd ?? Address: No.120 Chunlei Road, Xishan District, Wuxi City ?? technology Support: leading edge network
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