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Product Standard   Address: No.1 Huaye Road, Dongbang Town, Changshu City, Jiangsu Province, China. P.C: 215534 Tel: +86-512-51928332 Fax: +86-512-51928332 mobiles: 13732609130 Website: www.cqijy.com Company: Contact us :     Homepage >> Product Standard   Cold bending Square Steel(Executive Standard: GB/T 6728-2002、EN10219、ASTM A500、JIS3466) Specification and section peformance of some high frequency weld square hollow section

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