{"id":4607,"date":"2026-10-22T06:23:44","date_gmt":"2026-10-22T06:23:44","guid":{"rendered":"https:\/\/www.ggsteelstruct.com\/products\/welded-box-columns-beams\/"},"modified":"2026-10-22T22:14:02","modified_gmt":"2026-10-22T22:14:02","slug":"welded-box-columns-beams","status":"publish","type":"page","link":"https:\/\/www.ggsteelstruct.com\/ar\/products\/welded-box-columns-beams\/","title":{"rendered":"\u0623\u0639\u0645\u062f\u0629 \u0648\u0639\u0648\u0627\u0631\u0636 \u0635\u0646\u062f\u0648\u0642\u064a\u0629 \u0645\u0644\u062d\u0648\u0645\u0629"},"content":{"rendered":"\t\t
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  1. Home<\/a><\/li>
  2. Products<\/a><\/li>
  3. Welded Box Columns & Beams<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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    ESW internal diaphragms<\/span>Q355GJ \u00b7 Q420GJC thick plate<\/span>100% UT on CJP welds<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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    Custom Welded Box Columns, Pipe Columns & Heavy Box Girders<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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    Heavy box columns, box girders and rolled tube columns for high-rise, transfer and seismic frames. Internal diaphragms welded by electroslag, every full-penetration weld ultrasonically tested, pieces up to 24 m and 60 t.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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    1,800 \u00d7 1,800 mm<\/strong>Max. box section<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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    12\u2013100 mm<\/strong>Plate thickness<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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    \u03a6400\u20133,000 mm<\/strong>Tube columns<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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    24 m \/ 60 t<\/strong>Max. single piece<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    \n\t\t\t\t\t01<\/span>Engineering definition<\/span>\t\t\t\t<\/div>\n\t\t\t\t
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    Closed sections for heavy axial load, biaxial bending and torsion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    A welded box column is four plates welded into a closed section. Compared with an H-column of the same weight, it has equal stiffness about both axes, high torsional rigidity and no weak axis to brace. That makes it the default column for high-rise cores, moment frames in seismic zones and exposed architectural columns.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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    The difficult part is inside. Beam-level diaphragms must be welded to all four skin plates after the box is closed. We weld them by electroslag from outside the box, then test every joint by UT. For concrete-filled columns we add filling holes, vent holes and shear studs to the drawings.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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    Columns are cut to transport length from the start. Splice heights, erection lugs and temporary connections are set in the Tekla model and agreed with your erector before plate is ordered.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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