Tension Clamp Supplier

Tianjin Rocketis Technology Co., Ltd is a reliable tension clamp supplier in China. We have 20 years of experience in tension clamps production. The Euro type worm drive hose clamp is one of our flagship product. It is very popular in European market. The customers in European market are happy to our quality and price. We have established long-term and stable cooperative relationships with many distributors and end-users.

Description:

The constant tension clamp, also referred to as a Euro hose clamp, incorporates an innovative spring-loaded insert ring that maintains uniform radial pressure on the hose, even under thermal cycling or dynamic vibration.Specifically engineered for high-performance automotive applications, this clamp provides a robust sealing solution for critical fluid systems, ensuring long-term reliability in demanding operating conditions. Its precision-engineered design compensates for thermal expansion and mechanical vibrations, sustaining optimal clamping force throughout service life.

Material:

W4 201/430 - Band SS201/430, hosing SS430, spring SS301/SS304

W4 304 - All parts SS304

Factory:  

We are leading tension clamp supplier in China. Since our founding in 2005, we have been dedicated to the research, development, and manufacturing of premium-grade clamping solutions for global markets. We produce an extensive range of high-performance clamps that meet strict international standards, including DIN 3017, SAE, and other industry specifications.

Production Capacity & Team

    - 5-member R&D team dedicated to product innovation and process optimization.

    - 6-member quality control team ensuring strict compliance with standards for industrial hose clamp.

    - Daily Output: 80,000 units, supported by 80 skilled workers for stable and high-volume production.

High-Elasticity Constant Tension Hose Clamps

As a premier tension clamp supplier, RockClamp provides self-adjusting sealing solutions designed for applications where temperature fluctuations cause hose expansion and contraction. Our tension clamps exert a continuous, uniform radial force, ensuring a leak-proof seal without the need for periodic manual retightening.

Key Features:

• Self-Adjusting Mechanism: Automatically compensates for the "cold flow" of rubber hoses and thermal expansion/contraction of metal fittings.

• High-Fatigue Resistance: Manufactured from premium Spring Steel (Chrome Vanadium) or Stainless Steel, ensuring the clamp maintains its tension over thousands of thermal cycles.

• 360° Uniform Pressure: The band geometry is precision-engineered to provide equal pressure around the entire circumference of the hose.

• Surface Protection: Coated with high-grade Zinc or organic finishes to exceed standard salt spray requirements for automotive and outdoor use.

• Quick Installation: Can be easily installed and removed using standard or pneumatic pliers, significantly reducing assembly time on production lines.

Applications:

• Automotive: Radiator hoses, heater lines, and vacuum systems.

• Appliances: Washing machine drain hoses and dishwasher water inlets.

• Small Engines: Fuel and oil lines for lawnmowers and generators.

• Industrial Cooling: HVAC systems and liquid cooling loops for electronics.

FAQ

Q1: Why use a tension clamp instead of a standard worm drive clamp?

A: Standard worm drive clamps are rigid. When a hose shrinks in cold weather (cold leak), a rigid clamp may lose its grip. Tension clamps are elastic; they "follow" the hose's movement, maintaining constant pressure and preventing leaks throughout all seasons.

Q2: Are these clamps reusable?

A: Yes. High-quality spring steel tension clamps can be removed and reused multiple times as long as they haven't been over-expanded beyond their elastic limit. We recommend checking the tension strength before re-installation.

Q3: How do I select the correct size for a tension clamp?

A: You must measure the Outer Diameter (O.D.) of the hose after it has been pushed onto the fitting. Select a clamp whose nominal size falls within the middle of its expansion range for the best sealing performance.