Technical Specifications
|
stable design Catalog No. |
Model |
Main dimensions (mm) |
Specified Failure Load (kN) |
Weight (kg) (kg) |
||||
|
|
|
C |
M |
d |
H |
R |
|
|
|
U-7 |
20 |
16 |
16 |
80 |
10 |
70 |
0.44 |
|
|
U-10 |
22 |
18 |
18 |
85 |
11 |
100 |
0.54 |
|
|
U-12 |
24 |
22 |
20 |
90 |
12 |
120 |
0.96 |
|
|
U-16 |
26 |
24 |
22 |
95 |
13 |
160 |
1.47 |
|
|
U-21 |
30 |
27 |
24 |
100 |
15 |
210 |
2.2 |
|
|
U-25 |
34 |
30 |
26 |
110 |
17 |
250 |
2.79 |
|
|
U-30 |
38 |
36 |
30 |
130 |
19 |
300 |
3.75 |
|
|
U-0770 |
20 |
16 |
16 |
70 |
10 |
70 |
0.5 |
|
|
U-1085 |
20 |
18 |
16 |
85 |
10 |
100 |
0.6 |
|
|
U-1290 |
22 |
22 |
18 |
90 |
11 |
120 |
1 |
|
|
U-1695 |
24 |
24 |
20 |
95 |
12 |
160 |
1.5 |
|
|
U-21100 |
24 |
24 |
20 |
100 |
12 |
210 |
1.8 |
|
|
U-25110 |
28 |
27 |
24 |
110 |
14 |
250 |
2.1 |
|
|
U-32130 |
36 |
32 |
28 |
130 |
18 |
320 |
3 |
|
Product Introduction
◆ The U type shackle is a universal connecting fitting forged from round steel. It can be used individually or in pairs; its connection dimensions comply with the GB2315-85 standard; precision grade: tolerance ≤0.02 mm; tensile strength: ≥372.5 MPa.
◆ Suitable conductors: Compatible with various types of steel strands and cables used in overhead power lines; can be matched with different conductor specifications based on the model.
Product Features
Features:
1. material:hot dip galvanized steel
2. anti-corrosion
3. good performance
4. easy to use and install
Installation Steps
● Conductor Preparation: Clean and measure the aluminum conductor or Aluminum Conductor Steel Reinforced (ACSR) cable to ensure precise dimensional alignment for installation.
● Clamp Assembly: Position the APG PG clamp body around the conductor, ensuring that its serrated structure is accurately aligned.
● Bolt Tightening: Secure the clamp using hot-dip galvanized steel bolts, ensuring a firm and reliable fastening.
● Insulation Verification: Upon completion of the installation, verify the electrical insulation performance of the clamp to confirm that its safety and operational performance meet the required specifications.
Installation Safety
● Bolts/pins must be securely fastened; split pins must be opened to prevent loosening.
● The direction of force must align with the axis of the U-shaped pin; lateral forces are prohibited.
● Work at heights: Wear a safety harness, secure tools against falling, and have a designated person supervise.
Application Scenarios
- Electric Power Industry (Core Applications)
◆Overhead Transmission Lines: Connecting insulator strings to towers, connecting tension/suspension clamps to towers, and securing guy wires/steel strands.
◆Substations: Connecting equipment, securing busbars, and suspending structures.
◆Distribution Lines: Hardware connections for 10 kV and lower voltage lines; crossarm suspension.
- Lifting and Hoisting
◆Construction: Connection of lifting points for tower cranes and cranes; hoisting of structural components.
◆Logistics and Warehousing: Securing heavy cargo; securing containers.
◆Machinery Installation: Equipment positioning; handling of heavy components.
Quality Assurance System
Please feel free to contact us with any inquiries.
● Standards Compliance
◆Power line hardware: DL/T 759, GB 2315.
◆Material: GB 700 (carbon steel).
◆Fasteners: GB 41, SD 25/26 (nuts, bolts, split pins).
● Production and Testing
◆Process: Forging/Bending → Heat Treatment → Hot-Dip Galvanizing → Final Inspection.
◆Factory Testing:
- Appearance: Uniform galvanized coating, no cracks, no burrs.
- Dimensions: 100% inspection, conforming to nominal specifications.
- Mechanical Properties: Tensile test to verify breaking load.
- Corrosion Resistance: Salt spray test to evaluate corrosion resistance.
Certificate name
Certificate name
Certificate name
Certificate name
Certificate name
Use and Maintenance
- Regular inspections: Check for cracks, deformation, damage to the galvanized coating, and looseness.
- Immediately cease use if abnormalities are found: Deformation, cracks, stripped threads, or extensive peeling of the zinc coating.
- Scrap criteria: Plastic deformation ≥5%, cracks, severe corrosion, or damaged threads.
FAQ
Q: Can U type shackles be used as load-bearing connections to withstand line tension?
A: Yes, U-shaped hangers are load-bearing hardware designed to withstand line tension and suspension loads. They are primarily used as load-bearing connections in suspension and tension string assemblies; however, they must be selected strictly according to their rated load capacity, and overloading is strictly prohibited.
Q: If the zinc coating peels off during operation, will it affect performance? How should this be addressed?
A: Yes, it will affect performance. Peeling of the zinc coating leads to rusting of the hanger, reducing its mechanical strength and increasing the risk of fracture during long-term operation. Remedial measures: For minor peeling, apply a fresh coat of anti-corrosion paint; for severe peeling, immediately de-energize the line and replace the hanger to eliminate safety hazards.
Q: What is the corrosion resistance of U type shackles? How can outdoor corrosion resistance be improved?
A: Hot-dip galvanizing is the standard corrosion protection method, with a zinc coating thickness of ≥85 μm, which effectively resists outdoor corrosion. Improvement methods: ① Select U-shaped hangers with a hot-dip galvanized + Dacromet composite coating; ② Conduct regular inspections after installation, promptly remove surface debris, and reapply anti-corrosion grease; ③ In coastal areas with high salt fog, install anti-corrosion protective sleeves.
Q: What is a U type shackle hanger? What is it mainly used for?
A: A U-shaped hanger is a common connecting hardware used in transmission and distribution lines. It is primarily used for connecting, suspending, and redirecting insulator strings, line clamps, guy wires, and other components to utility poles or other hardware.
Q: What are the common models of U type shackles?
A: Common models include U-7, U-10, U-12, U-16, U-20, U-25, etc. The numbers represent the rated breaking load (unit: kN).
Q: What is the difference between U type shackles and UL-shaped hangers?
A: UL-type U-hooks are longer than standard U-hooks and are primarily used in applications requiring extended connections, clearance around structures, or gap adjustment; their load-bearing performance is essentially the same.
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