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Plain square steel end caps for welding onto the open ends of square box section (SHS). Plasma cut from 3, 4 or 5 mm mild steel, 304 or 316 stainless and sold in packs of 5, 10 or 25, so every cap in a job is the same size.
Need a cap with a drain hole, a radius or an odd size? Send us a drawing.
Most fabricators order the cap the same size as the outside of the box section, then run a fillet weld round the edge and dress it flush. Choose a cap a few millimetres smaller if you want it to sit inside the corner radius instead. Sealing the ends of box section keeps water out of handrails, gate frames, trailer frames, table legs and posts, so they don’t rust from the inside.
Made to order. We email your dispatch date. See delivery rates. Capping round tube? See round tube end caps. Rectangular box section? See rectangular end caps.
Which size do I need for 40 × 40 box section?
Order the 40 × 40 mm cap to sit flush with the outside faces, or a smaller size if you want it set inside the tube walls.
Do the caps have holes?
No. They are plain plates. For drain or vent holes, send a drawing.
How much does a cap weigh?
A 50 × 50 × 3 mm mild steel cap weighs about 60 g.
Are these laser cut?
No. They are plasma cut and deburred, so edges show a plasma-cut finish and are not held to laser-cut tolerances. For tight-tolerance parts, send us a drawing.
Plain square steel end caps for welding onto the open ends of square box section (SHS). Plasma cut from 3, 4 or 5 mm mild steel, 304 or 316 stainless and sold in packs of 5, 10 or 25, so every cap in a job is the same size.
Need a cap with a drain hole, a radius or an odd size? Send us a drawing.
Most fabricators order the cap the same size as the outside of the box section, then run a fillet weld round the edge and dress it flush. Choose a cap a few millimetres smaller if you want it to sit inside the corner radius instead. Sealing the ends of box section keeps water out of handrails, gate frames, trailer frames, table legs and posts, so they don’t rust from the inside.
Made to order. We email your dispatch date. See delivery rates. Capping round tube? See round tube end caps. Rectangular box section? See rectangular end caps.
Which size do I need for 40 × 40 box section?
Order the 40 × 40 mm cap to sit flush with the outside faces, or a smaller size if you want it set inside the tube walls.
Do the caps have holes?
No. They are plain plates. For drain or vent holes, send a drawing.
How much does a cap weigh?
A 50 × 50 × 3 mm mild steel cap weighs about 60 g.
Are these laser cut?
No. They are plasma cut and deburred, so edges show a plasma-cut finish and are not held to laser-cut tolerances. For tight-tolerance parts, send us a drawing.