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Stainless Steel Square Tube End Caps Three Way 80mm Tube Corner Joint

Place of Origin: Qingdao, China
Brand Name: Railing-O
Certification: CE certifiate/ ISO9001
Model Number: QLS039
Product Details
Place of Origin:
Qingdao, China
Brand Name:
Railing-O
Certification:
CE certifiate/ ISO9001
Model Number:
QLS039
Minimum Order Quantity:
100pcs
Payment Terms:
L/C,D/A,D/P,T/T,Western Union
Specifications
Model No.:
QLS039
Material:
Stainless Steel AISI304/316
Surface Finish:
Satin / Mirror
Tube Compatibility:
Square Tube, T=2.0 Mm
A×B (mm):
40×40 / 50×50 / 80×80 (as Per Model)
Installation:
Indoor (AISI304) / Outdoor (AISI316)
Certificate:
CE,MTC, ISO9001
MOQ / Sample:
100 Pcs Or As Per Items, Free Sample Available
Highlight:

stainless steel square tube end caps

,

square tube end caps three way

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80mm tube corner joint

Product Description
Stainless Steel Three-Way Square Tube Corner Joint for Handrail Sizes 40-80mm QLS039

The QLS039 series square 90° three‑way connector is an advanced multi‑directional corner fitting engineered to join three square handrail tubes at precise right angles. Investment‑cast from premium stainless steel, this connector enables seamless T‑joint and corner configurations where multiple rail sections converge. Available in AISI304 for interior applications and AISI316 for exterior and marine environments, the QLS039 delivers robust structural integrity through its internal fit design, eliminating the need for welding or external brackets. Available in satin or mirror finish, this connector provides a versatile solution for complex railing layouts.

Key Benefits
  • Precision Engineering: Designed for seamless 90-degree square tube alignment.
  • Versatile Application: Ideal for professional-grade square tube handrail systems.
  • Durable Construction: Built for long-term stability and structural support.
  • Three‑way 90° configuration – facilitates T‑joints, multi‑directional intersections, and complex railing junctions.
  • Dual material grades – AISI304 for interior; AISI316 for exterior and coastal installations.
  • Internal fit design – delivers clean, weld‑free joints with flush surface alignment.
  • Three sizes available – compatible with 40×40mm, 50×50mm, and 80×80mm square tubes.
  • Glue‑in installation – simple adhesive bonding with structural adhesive; no specialist welding skills required.
  • Two finish options – satin brushed or mirror polished for architectural versatility.
  • ISO9001 certified – full quality assurance with MTC documentation provided.
Product Attributes
FOB Unit: Piece
MOQ: 100 Pieces
Packaging: Plastic bag, carton, and pallet (Customizable)
Technical Specifications
Parameter Value
Product Type Square 90° Three‑Way Connector
Series QLS039
Material AISI304 (interior) / AISI316 (exterior)
Surface Finish Satin or Mirror (optional)
Tube Compatibility Square tube, 2.0mm wall thickness
Installation Method Internal glue‑in (structural adhesive required)
Certification MTC, ISO9001
MOQ 100 pcs; free sample available
Code A x B (mm) H (mm)
QLS039.4040 40 x 40 40
QLS039.5050 50 x 50 50
QLS039.8080 80 x 80 80
Packaging & Delivery

Each connector is individually wrapped in protective plastic bags and packed in cartons, loaded onto pallets for secure transit. Custom packaging available on request. Delivery timelines are arranged according to order quantities and production schedules; we guarantee on‑time shipment as committed. MTC and ISO9001 certification documents accompany every consignment.

Why Choose Us
  • Multi‑directional connectivity – enables T‑joints and complex intersections.
  • Twin material choice – 304 for interiors, 316 for demanding exteriors.
  • Three size options – covers common square tube dimensions.
  • Free sample program – evaluate quality before bulk orders.
  • Quality certified – ISO9001 and MTC documentation included.
  • Factory‑direct pricing – competitive with volume discounts.

Send your inquiry directly to us