China Pre Galvanized Square Hollow Section Steel Tube for ...
Pre Galvanized Square Hollow Section Steel Tube for greenhouse construction. Size. 1/2'--4'; 20x20--100x100mm; 20x40--50x100mm. Wall thickness. 0.8mm-2.0mm . Length. 5.8m/6m or based on your request. Standard. BS1387,ASTM A500 and so on. Surface. Galvanized …
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