Band width: 15.8mm
Material: W2/W4
Free running torque: 6 in-lbs (0.7 Nm)
Suggested installation torque: 94 in-lbs (11 Nm)
When standard 12mm tension clamps reach their limit, our 15.8mm (5/8") Wide Band Series takes over. Designed for high-performance sealing in heavy-duty diesel engines and large-diameter industrial hoses, the increased surface area of the 15.8mm band provides significantly higher radial load and superior grip.
Tianjin Rocketis Technology Co., Ltd is a constant tension clamps manufacturer with 20 years of production experience. We produce kinds of constant tension clamps includes worm gear constant tension clamps, Spring loaded T bolt clamps and spring clamp. 15.8mm band width torque clamp is one of our hot-selling products.
Description:
The 15.8mm band width constant torque clamp, commonly referred to as a torque clamp, is a high-performance pipe fastening system designed for demanding industrial applications. Utilizing a heavy-duty worm gear mechanism, this robust clamping solution delivers superior performance for critical pipeline connections in sectors such as petrochemical processing, heavy machinery, and marine engineering. Its optimized design ensures reliable, high-strength fastening under extreme operating conditions.

Why the 15.8mm (5/8") Specification is Critical:
Maximized Surface Contact: The 15.8mm width distributes clamping force over a larger area, preventing hose "cold flow" and ensuring a leak-proof seal on large-diameter fittings.
High-Torque Resistance: A wider band means higher fatigue resistance. These clamps are engineered to maintain constant tension even in extreme thermal cycles from -40°C to +150°C.
Heavy-Duty Construction: Specifically designed for the Truck, Bus, and Off-Road industries where vibration and pressure surges are constant.
Premium Spring Materials: Manufactured from high-tensile spring steel with advanced protective coatings (Dacromet/Zinc-Rich) to exceed 480-hour salt spray tests.
Material:
W2 - Band and hosing SS301/304, screw galvanized steel, washer SS410.
W4 - Band, hosing and screw SS301/304, washer SS410.
Technical Table
| Feature | 15.8mm Heavy-Duty Series |
| Band Width | 15.8mm (5/8") |
| Clamping Force | Superior (Heavy-Duty) |
| Application | Large Engines / Turbo / Heavy Truck |
| Surface Area | High (Prevents Hose Damage) |
| Standards | SAE J1508 / Heavy-Duty Class |
Factory:
As a professional constant tension clamps manufacturer, we have the advanced equipments, like fully automatic stamping machines, fully automatic band cutting machines, fully automatic spot welding machines, fully automatic rolling machines and packing machines. We also have the latest salt spray test machines and torque testers.


FAQ
Q1: Why should I use a 15.8mm band width instead of 14.2mm?
A: Large diameter hoses (typically over 2 inches) require more surface contact to ensure a leak-proof seal. The 15.8mm band prevents the clamp from "biting" too deeply into the hose wall, preserving hose integrity while providing much higher tension.
Q2: What materials are available for the 15.8mm series?
A: We primarily manufacture these in High-Carbon Spring Steel with specialized anti-corrosion coatings, but we also offer 300-Series Stainless Steel for marine and chemical applications where constant tension is required in corrosive environments.
Q3: Is the installation tool different for 15.8mm clamps?
A: Because of the higher spring rate of the 15.8mm band, we recommend using heavy-duty pneumatic pliers or specialized manual tension clamp tools to ensure safe and efficient installation on production lines.

Our hose clamp manufacturing facility spans 12,000㎡, featuring a streamlined layout with dedicated zones for:
This optimized structure ensures efficient workflow and seamless operations.
Production Capacity & Workforce
Daily Output: 80,000 units, supported by 80 skilled workers for high-volume, stable production.
R&D Team: A dedicated 5-member engineering team focuses on product innovation and process optimization.
Quality Control: A 6-member QC team enforces strict compliance with industrial hose clamp standards, ensuring consistent product reliability.
This setup guarantees high productivity, precision engineering, and stringent quality assurance for industrial applications.
We aim to be the best constant tension clamps manufacturer in China, to meet our customers' demand on quality, delivery time, customized package.