The 40 x 40mm Square Weld-On End Cap permanently closes the open ends of 40 x 40mm square stainless steel tubing with a flat plate cap welded in place by the installer. It has no inner stem — the cap simply sits flush against the tube end and is welded around all four sides, creating a solid, permanently fused termination that is fully integrated with the tube structure.
Used in fully welded square tube balustrade systems, this cap is the correct choice where mechanical press-fit caps are not appropriate and a robust, permanent tube end is required. When finished correctly, the welded cap creates a solid, seamless end face that gives the tube a premium, fully fabricated appearance.
Manufactured in Grade 316 Marine Grade stainless steel with a mirror polish finish.
Specifications
- Type: End Cap — Weld-On
- Profile: Square
- Tube Dimensions: 40 x 40mm
- Fitting Method: Weld-on — no inner stem, welded over tube end by installer
- Finish: Mirror Polish
- Grade: 316 Marine Grade Stainless Steel
- Material: Stainless Steel
- Category: Components & Fittings – End Caps
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| Grade & Finish | 316 – Mirror |
|---|---|
| Type | Weld |
| Size | 40 x 40mm |
| Material | Stainless Steel |
| Shape | Square |




