China Heavy Duty Compensating Constant Pressure Hose Clamps For Pipe Pricelist, Quotes

This clamp uses a disc spring stack (SS301) to maintain steady band tension as hose dimensions change with temperature or pressure. The housing and band are SS304, the screw is SS410 for higher torque resistance. Four-rivet construction tested to >25 N·m destructive torque. Available in 16 sizes from 32–252mm, 15.8mm band width, 10 pcs per bag, 100 per carton. Used in truck cooling, hydraulic lines, pipe joints, and industrial fluid systems.

Product Description

We manufacture this clamp for systems where temperature changes and vibration make ordinary clamps loosen up. The key is a disc spring stack made of SS301. When you tighten the screw, the spring stack compresses. If the hose expands or shrinks, or if the rubber takes a set over time, the spring stack pushes back to keep the band tension nearly constant. That means you don’t have to re-tighten as often, and the seal stays reliable longer.

Constant Tension Clamp Detail 1
Constant Tension Clamp Detail 2
Constant Tension Clamp Detail 3
Constant Tension Clamp Detail 4
Constant Tension Clamp Detail 5

Material & Construction Specifications

Band, Housing, and End Cover

SS304 stainless steel – good corrosion resistance, standard for most industrial environments.

Screw Mechanism

SS410 stainless steel. Harder martensitic grade than SS304. Resists thread galling, especially under repeated torque.

Disc Spring Stack

SS301 steel with high yield strength. Returned to >99% height in 8 N·m compression tests, securing reliable compensation.

Riveted Housing

Fixed to the band with four rivets. Destructive torque limit consistently exceeds 25 N·m, preventing slippage under high vibration.

Specifications (mm) Steel strip width (mm) Material Plastic bag quantity Carton quantity
32-54 15.8 304 10 100
45-67 15.8 304 10 100
57-80 15.8 304 10 100
70-92 15.8 304 10 100
83-105 15.8 304 10 100
95-118 15.8 304 10 100
108-131 15.8 304 10 100
121-143 15.8 304 10 100
134-156 15.8 304 10 100
146-169 15.8 304 10 100
159-181 15.8 304 10 100
172-194 15.8 304 10 100
184-207 15.8 304 10 100
197-219 15.8 304 10 100
210-232 15.8 304 10 100
230-252 15.8 304 10 100
Clamp Production Line 1
Clamp Production Line 2
Clamp Production Line 3

Protective Inner Liner

There’s a liner inside the band. It does two things: it protects the hose surface from abrasion, and it spreads the clamping force more evenly around the circumference. That helps avoid localized pinching and gives a more uniform seal.

Inner Liner Feature 1
Inner Liner Feature 2
Inner Liner Feature 3
Inner Liner Feature 4
Inner Liner Diagram 5
Inner Liner Installation 6
Inner Liner Detail 7

A normal clamp gives a fixed circumference – if the hose softens or shrinks, the tension drops. This one adjusts internally through the spring stack. The initial installation is the same – you just torque the screw to your specified value. From then on, the clamp maintains the force by itself, within the working range of the spring.

We’ve seen users cut maintenance intervals in half simply by switching to this type. It’s not a fancy gadget; it’s a mechanical fix for a physical problem – thermal movement and material creep.

Our customers use these clamps in:

  • Engine cooling and turbo lines on heavy trucks
  • Hydraulic oil return lines in construction equipment
  • Pipe joints in water treatment plants
  • Fuel and air lines on marine engines
  • General fluid transfer where pressure fluctuates
Application example 1
Application example 2
Application example 3
Application example 4
Application example 5
Application example 6
Application example 7
Application example 8
Application example 9
Application diagram
Application packing
Product variation 1
Product testing
Product variation 2
Product quality test
Product dimension 1
Product dimension 2
Product dimension 3
Product dimension 4
Frequently Asked Questions
Q: How does the constant tension feature work?

The clamp contains a disc spring stack made of SS301. When you tighten the screw, this spring stack compresses. As the hose expands or shrinks due to thermal changes, or if the rubber takes a set over time, the spring stack automatically pushes back to maintain a nearly constant band tension.

Q: What materials are used to construct these clamps?

The band, housing, and end cover are constructed from SS304 stainless steel for robust corrosion resistance. The screw is made of SS410 stainless steel for higher hardness and thread galling resistance. The disc spring stack is made of SS301 stainless steel to achieve higher yield strength.

Q: What is the advantage of the inner liner?

The inner liner provides two main benefits: it protects the hose surface from abrasion caused by movement, and it distributes the clamping force more evenly around the circumference to prevent localized pinching and ensure a uniform seal.

Q: Can these clamps withstand heavy vibrations?

Yes. The housing is secured to the band using four rivets. Destructive torque testing shows that the point where the housing starts to twist consistently exceeds 25 N·m, which is significantly higher than standard clamps, allowing them to handle intense vibration without slipping.

Q: Where are these constant-tension clamps commonly used?

They are widely used in heavy truck engine cooling and turbo lines, hydraulic oil return lines in construction equipment, pipe joints in water treatment plants, fuel and air lines on marine engines, and general fluid transfer applications experiencing pressure fluctuations.

Q: Do I need any special tools to install these clamps?

No. The installation process is the same as a normal clamp. You simply torque the screw to your specified torque value. Once installed, the internal spring stack manages and maintains the required clamping force automatically.

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