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- Standards: DIN910, DIN912, DIN913, DIN914, DIN915, DIN916, DIN7991 and DIN7996; ASME B18.3, ASTM A574, ASTM F835, ASTM F912
- DIN: CLASS 8.8,10.9, 12.9; ANSI: GR.5, GR.8
- Surface: natural color, zinc, hot dip ...
Zhejiang Zhenglian Industrial Development Corp.
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