

The Square Tube Joiner Tee is a high-strength architectural component designed to create precise three-way connections in handrail systems utilizing 50.8mm x 50.8mm square stainless steel tubing. This tube connector allows for the seamless integration of vertical and horizontal rails, making it a critical fitting for complex junctions in balustrades, stairs, and modular shelving systems. With an external corner length (A) of 75mm and a 63mm insertion depth (B), it provides a sturdy, balanced foundation that ensures a comfortable grip and a professional aesthetic.
Manufactured from premium Grade 304 or 316 stainless steel, this square handrail fitting is engineered for both structural durability and corrosion resistance. It features a “flush” design where the tubing sits tight against the central hub, creating a modern, minimalist look without the need for on-site welding. Whether used on a residential balcony or in a commercial architectural project, the Square Tube Joiner Tee provides a secure and visually appealing solution for multi-directional railing transitions.
|
Category |
Part NO. |
Fit for Tube
(mm) |
A (mm) |
B (mm) |
□ (mm) |
Material |
Surface |
Place of Production |
|
Tube Joiner |
ST0250
|
50.8 x 50.8 x 1.5
|
75 | 63 | 50.8 |
Stainless Steel 304 / 316 |
Satin or Mirror polished |
Shandong, China |
1. Manufacturing Process: Investment Casting + Precision Machining+Polishing
2. Application Scenario: Hotel, Villa, Apartment, Office Building, Hospital, School, Mall, Sports Venues, Leisure Facilities, Supermarket, Park, Bathroom, Outdoor, Exterior, Entry, Hall, Staircase, Gym
3. Use Place: Bridge Railings / Handrails, Deck Railings / Handrails, Porch Railings / Handrails, Stair Railings / Handrails
4. Design Style: Contemporary, Modern, European, Craftsman
5. Certificate: ISO9001:2015
6. Engineering Solution Capability: Graphic Design, 3d Model Design, Total Solution For Projects
7. Certificates: Material Certificates, Dimension Inspection Certificate
8. Lead Time : 60days batch production after square tube joiner samples approved
9. Warranty Service: 1 Year
10. After-sales Service: Online Technical Support, Return And Replacement
Q1. What tube dimensions is the Square Tube Joiner Tee compatible with?
A: This joiner is specifically designed to fit 50.8mm x 50.8mm square stainless steel tubing. The 63mm insertion legs are engineered to slide securely inside the tube for a stable, internal connection.
Q2. Is this 3-way connector suitable for outdoor or poolside use?
A: Yes, provided the correct material grade is selected. While AISI 304 is suitable for interior applications, AISI 316 is mandatory for outdoor, coastal, or poolside environments to ensure maximum resistance to corrosion and environmental factors.
Q3. Does the installation require welding?
A: No. These handrail tube fittings are designed for a clean, weld-free installation. They can be secured using high-strength structural adhesives or a friction-fit "hammer-in" method, which significantly reduces labor time while maintaining a seamless appearance.
Q4. What are the common applications for a Square Tube Joiner Tee?
A: It is most commonly used in the construction of 90-degree 3-way junctions for handrails on stairs, balconies, and terraces. It is also highly effective for creating the framework for modular stainless steel shelving and specialized architectural barriers.
Q5. What finishes are available to match my railing system?
A: To ensure a perfect match with your existing hardware, the Square Tube Joiner Tee is available in both Satin (brushed) and Mirror Polished (reflective) finishes. Both finishes provide long-lasting durability and an attractive architectural profile.