Qingdao Railing-O Metal Product Co.,
| Model No | QN021.5050 |
| Packaging | Plastic bag + carton + pallet (or as per request) |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Installation | Indoor (AISI304) / Outdoor (AISI316) |
| Certificate | MTC, ISO9001 |
| Material | Stainless Steel AISI304 (interior) / 316 (exterior) |
| Tube Compatibility | 50×50 mm square tube |
| Product Type | Square Tube Cover Cap |
| Model Number | QN021.5050 |
| Certification | CE certifiate/ ISO9001 |
| Place of Origin | Qingdao, China |
| Brand Name | Railing-O |
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Product Specification
| Model No | QN021.5050 | Packaging | Plastic bag + carton + pallet (or as per request) |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Installation | Indoor (AISI304) / Outdoor (AISI316) |
| Certificate | MTC, ISO9001 | Material | Stainless Steel AISI304 (interior) / 316 (exterior) |
| Tube Compatibility | 50×50 mm square tube | Product Type | Square Tube Cover Cap |
| Model Number | QN021.5050 | Certification | CE certifiate/ ISO9001 |
| Place of Origin | Qingdao, China | Brand Name | Railing-O |
| High Light | 50 × 50mm square tube caps ，square tube caps precision ，engineered square tube end caps | ||
The QN021.5050 square tube cover cap is a precision‑engineered finishing accessory designed to seal and protect the open ends of 50×50mm square handrail tubes. Manufactured from high‑grade stainless steel – AISI304 for interior applications and AISI316 for exterior environments – this cap provides a clean, professional termination point that prevents debris ingress and protects exposed tube edges. The push‑fit design ensures simple installation without welding, delivering a flush, polished look that complements any railing system. Available in satin or mirror finish, the QN021.5050 offers a durable, corrosion‑resistant solution for both residential and commercial projects.
Protective sealing – effectively blocks dust, moisture, and debris from entering tube ends.
Push‑fit design – simple friction‑fit installation; no welding or adhesive required.
Dual material grades – AISI304 for interiors; AISI316 for exterior and coastal environments.
Precision sizing – engineered specifically for 50×50mm square tubes with 2.0mm wall thickness.
Two finish options – satin brushed or mirror polished for design versatility.
Corrosion‑resistant – stainless steel construction ensures long‑term durability.
ISO9001 certified – quality assurance with MTC documentation available.
Free sample – evaluate before committing to bulk orders.
Ideal for terminating handrail ends in staircases, balconies, terraces, deck railings, and glass balustrade systems. Suitable for residential villas, apartment buildings, hotels, shopping centres, office buildings, and public walkways. The cover cap provides a safe, finished edge that protects users from sharp tube corners while enhancing the overall aesthetic.
| Parameter | Value |
|---|---|
| Product Type | Square Tube Cover Cap / End Cap |
| Model | QN021.5050 |
| Material | AISI304 (interior) / AISI316 (exterior) |
| Surface Finish | Satin or Mirror (optional) |
| Compatible Tube | 50×50mm square tube, 2.0mm wall thickness |
| Installation Method | Push‑fit (friction fit) |
| Certification | MTC, ISO9001 |
| MOQ | 100 pcs; free sample available |
| Code | Tube Size (mm) |
|---|---|
| QN021.5050 | 50x50 |
Each cap is individually wrapped in protective plastic bags, packed in cartons, and loaded onto pallets for secure transit. Custom packaging available on request. Lead time is normally 25–50 days after deposit received; we guarantee on‑time shipment as committed. MTC and ISO9001 certification documents accompany every consignment.
Purpose‑built end sealing – specifically designed for square tube terminations.
Twin material grades – 304 for interiors, 316 for demanding exteriors.
Free sample program – verify quality before bulk ordering.
Quality certified – ISO9001 and MTC documentation included.
Factory‑direct pricing – competitive rates with volume discounts.
Global experience – trusted by architects and contractors worldwide.
Company Details
Business Type:
Manufacturer
Year Established:
2016
Total Annual:
50000000-50000000
Employee Number:
200~200
Ecer Certification：
Verified Supplier
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