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    产品详细介绍: 直径或边长:220×200-500×500mm、250×200-600×400mm;壁厚:5.0-20.0mm;钢号:达到Q460;标准:GB/T 6728、EN 10219、JIS G 3466、JB结构用方矩形管 方管 矩形管 壁厚 (mm) 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.5 13.0 14.0 15.0 16.0 17.5 19.0 20.0 220×220 250×200 260×180 ● ● ● ● ● ● ● ● ●             250×250 300×200 ● ● ● ● ● ● ● ● ● ● ● ●       280×280 350×200 ● ● ● ● ● ● ● ● ● ● ● ●       300×300 450×150 400×200 350×250 ● ● ● ● ● ● ● ● ● ● ● ● ●     320×320 350×300 400×250   ● ● ● ● ● ● ● ● ● ● ● ●     350×350 400×300 450×250 500×200   ● ● ● ● ● ● ● ● ● ● ● ●     380×380 500×250       ● ● ● ● ● ● ● ● ● ●     400×400 450×350 500×300 600×200       ● ● ● ● ● ● ● ● ● ● ● ●   450×400       ● ● ● ● ● ● ● ● ● ● ● ● 450×450 500×400         ● ● ● ● ● ● ● ● ● ● ● 480×480 500×450         ● ● ● ● ● ● ● ● ● ● ●   500×480         ● ● ● ● ● ● ● ● ● ● ● 500×500 600×400         ● ● ● ● ● ● ● ● ● ● ● 钢级 Q460 Q390 Q345 Q295