connector loop box 1
connector loop box 2

Connector Loop Box

Embedded steel box with a folded wire-rope loop for connecting precast concrete elements. Four standard models are listed with loop lengths from 60 to 120 mm.

L1

160 mm

L2

170–185 mm

Loop length SL

60–120 mm

Height H

20 mm

Weight

0.15–0.23 kg

Inquiry

Reliable Connection Solutions for Precast Concrete Elements

A Connector Loop Box, also known as a Wire Loop Box or Wire Rope Box, is a prefabricated steel component used to create connections between precast concrete elements.

It consists of a steel box containing a folded wire rope loop, which is embedded into the concrete element during production. After the formwork is removed, the wire loop can be pulled out from the box to connect adjacent precast components, such as wall-to-wall and wall-to-column joints.

During installation, the exposed wire loops are arranged together and integrated with the joint reinforcement. The connection area is then filled with concrete or grout according to the structural design, forming a connection between the precast elements.

We manufacture connector loop boxes for precast concrete construction, offering different designs and specifications to meet various project requirements. Customized sizes, wire rope configurations, and OEM manufacturing services are available.

Specifications

ModelL1 (mm)L2 (mm)SL (mm)H (mm)B (mm)D (mm)Weight (kg)
WCL-A116017060205060.15
WCL-A216017080205060.17
WCL-A3160180100205060.2
WCL-A4160185120205060.23

Other sizes are available on request. Please confirm the selected model and compatible accessories for your project.

L1

160 mm

L2

170–185 mm

Loop length SL

60–120 mm

Height H

20 mm

Weight

0.15–0.23 kg

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Company Overview

With 14 years of experience, we specialize in custom OEM manufacturing, backed by strong in-house R&D, design, and production capabilities. Our facility is equipped for precision machining, CNC processing, grinding, sawing, stamping, and welding. Daily capacity includes 800 magnetic box steel plate sets, 1,000 magnetic boxes and edge-mold buttons, 500 magnetic forming devices, and 1,000 magnetic chucks. We can also process U-shaped edge molds up to 4.5 meters long. Comprehensive inspection equipment supports consistent quality for clients worldwide.

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FAQ

What types of products do you specialize in manufacturing?

We specialize in the customization and OEM production of magnetic boxes, magnetic edge molds (including 4.5-meter U-shaped edge molds), embedded parts, magnetic forming devices, and magnetic chucks. With complete in-house production equipment and 14 years of manufacturing experience, we handle the full process from R&D and design to final production.

Our equipment supports high-volume output:

  • Magnetic box steel plates: up to 1,800 sets/day (8 machining centers + 2 grinding machines)
  • Raw material for magnetic box steel plates: 3,000 sets/day (2 high-speed sawing machines)
  • Magnetic boxes, edge mold buttons, magnetic forming devices, and magnetic chucks: up to 3,500 pieces/day across 12 CNC machines
  • Embedded parts: 500 pieces/day
  • U-shaped edge molds (up to 4.5 meters): 1 set/day
  • Stamped parts: 5,000 pieces/day (3 punching machines)

Our core machining equipment — including 8 machining centers, 1 large engraving machining center, 1 milling-turning machine, and 12 CNC machines — all operate at a precision of 0.01 mm. Grinding and high-speed sawing processes hold a precision of 0.05 mm, ensuring tight tolerances across the entire production line.

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