U-shaped tongue clips forged from carbon steel for composite insulators

Description :
Our hot-forged carbon steel U-shaped tongue clips are precision-engineered suspension components designed for composite polymer insulators in high-voltage transmission lines. These heavy-duty clamps provide secure mechanical anchoring while preventing insulator slippage, even under extreme wind and ice loads up to 100kN.

Key Features & Benefits :
✔ Superior Material - Forged from ASTM A105/A694 carbon steel with 345MPa yield strength
✔ Precision Fit - CNC-machined tongue-groove interface ensures ±0.2mm alignment accuracy
✔ Corrosion Protection - Standard hot-dip galvanizing (86μm) or optional Dacromet coating
✔ Load-Tested - 2.5x safety factor over rated mechanical load (RML) per IEC 61952
✔ Streamlined Design - U-shape reduces wind-induced vibration by 40% vs. traditional designs

Technical Specifications :

Applications :
• 110kV-1000kV transmission line dead-ends
• Railway catenary system suspensions
• Offshore wind farm insulator strings
• HVDC tower jumper supports

FAQ :

1. What makes your forged tongue clips superior to cast alternatives?

• 3x Longer Fatigue Life: Forged grain structure withstands 1 million+ load cycles (per IEC 61325)

• Higher Strength: 345MPa yield strength vs. 240MPa for typical cast steel

• Precision Fit: CNC-machined grooves maintain ±0.2mm tolerance vs. ±1.5mm for cast parts

2. Which carbon steel grades do you recommend for different environments?

3. How do you prevent insulator rubber damage?

• Radiused Edges: 2.5mm minimum radius on all contact surfaces

• Non-Mar Design: Electropolished grooves eliminate sharp edges

• Load Distribution: Optimized U-shape reduces point loading by 60%

4. What testing do your clips undergo?

• Mechanical:

  • 2.5x RML static load test (IEC 61952)

  • 50,000+ vibration cycles (IEEE 1523)

• Environmental:

  • 3000hr salt spray (ASTM B117)

  • -40°C impact toughness test

5. What's your production lead time?

• Standard: 4-6 weeks

Qingdao Sande Technology Co., Ltd. is located in Qingdao. We are specialized in manufacturing forging, CNC machining and various surface treatments. We have over 16 years of experience.
We have a professional and experienced team of engineers, advanced production and testing equipment, a powerful quality control system, and professional customer service... We will offer professional services, high-quality products and favorable prices. We sincerely welcome domestic and foreign customers to cooperate with us!