Band width: 18, 20, 22, 24, 26mm
Material: W1
Free running torque: 6 in-lbs (0.7 Nm)
Suggested installation torque: 38 in-lbs (4.5 Nm) - 248 in-lbs (29 Nm)
Our Heavy Duty Hose Clamps are specifically designed for high-vibration and high-pressure environments where standard clamps fail. Engineered with a robust band and high-strength bolt mechanism, these clamps provide maximum sealing force for thick-walled, reinforced hoses.
Description:
Heavy duty hose clamps, which is also called heavy duty hose clips, are industrial-grade pipeline fastening device specifically engineered for high-pressure applications, comprising a high-strength steel band, reinforced bolts (with tensile strength grade 8.8), wear-resistant sleeves, and solid load-bearing shafts. Designed for demanding connection strength requirements in petroleum pipelines and construction machinery hydraulic systems, its unique dual-pressure-bearing mechanism combining sleeves and solid shafts effectively distributes axial stress, ensuring stable sealing performance even under continuous vibration conditions.

Heavy duty hose clips Material:
W1 - All parts carbon steel with zinc plated.
Both white zinc or yellow zinc available.

Features:
Heavy duty hose clamps consist of a band, bridge, bolt, trunnion, and sleeve. Unlike worm-drive hose clamps that use a screw gear mechanism for adjustment, this design relies on bolt tightening to regulate the diameter. The bolt length directly determines the adjustment range, typically limited to 3-5mm for standard sizes. However, larger variants (e.g., 240-250mm diameter models with 110mm bolts) can achieve an extended adjustment range of up to 15mm.
Maximum Torque Capacity: Reinforced housing and heavy-duty bolts allow for superior tightening torque without stripping.
Hose Surface Protection: Specially designed rounded band edges prevent cutting or abrading the hose under extreme pressure.
Corrosion Resistance: Available in AISI 304 and 316 Stainless Steel, perfect for marine, chemical, and offshore applications.
Uniform Sealing Force: Precision-engineered band geometry ensures equal pressure distribution around the entire 360° circumference.
The heavy duty hose clips feature Grade 8.8 high-strength bolts, while the zinc-plated surface treatment provides superior lubricity during installation, significantly reducing friction and enabling faster assembly.

Drawing:

Dimension chart:
| Heavy duty hose clamps | |||||||
| Size | Size | A | B | M*L | T | H | ⌀(1) |
| HSW119 | 17-19 | 0.5 | 18 | M5*40 | 0.6 | 5 | 12 |
| HSW122 | 20-22 | 0.5 | 18 | M5*40 | 0.6 | 5 | 12 |
| HSW125 | 23-25 | 0.5 | 18 | M5*40 | 0.6 | 5 | 12 |
| HSW128 | 26-28 | 0.5 | 18 | M5*40 | 0.6 | 5 | 12 |
| HSW131 | 29-31 | 0.6 | 20 | M6*50 | 0.8 | 9 | 12 |
| HSW135 | 32-35 | 0.6 | 20 | M6*50 | 0.8 | 9 | 12 |
| HSW139 | 36-39 | 0.6 | 20 | M6*50 | 0.8 | 9 | 12 |
| HSW143 | 40-43 | 0.6 | 20 | M6*50 | 0.8 | 9 | 12 |
| HSW147 | 44-47 | 0.8 | 22 | M6*55 | 1.2 | 9 | 12 |
| HSW151 | 48-51 | 0.8 | 22 | M6*55 | 1.2 | 9 | 12 |
| HSW155 | 52-55 | 0.8 | 22 | M6*55 | 1.2 | 9 | 12 |
| HSW159 | 56-59 | 0.8 | 22 | M6*55 | 1.2 | 9 | 12 |
| HSW163 | 60-63 | 0.8 | 22 | M6*55 | 1.2 | 9 | 12 |
| HSW167 | 64-67 | 0.8 | 22 | M8*70 | 1.5 | 11 | 14 |
| HSW173 | 68-73 | 0.8 | 24 | M8*70 | 1.5 | 11 | 14 |
| HSW179 | 74-79 | 0.8 | 24 | M8*70 | 1.5 | 11 | 14 |
| HSW185 | 80-85 | 0.8 | 24 | M8*70 | 1.5 | 11 | 14 |
| ... | |||||||
| HSW1239 | 227-239 | 0.8 | 26 | M10*110 | 1.7 | 25 | 15 |
| HSW1291 | 279-291 | 0.8 | 26 | M10*110 | 1.7 | 25 | 15 |
Applications:
Heavy Machinery & Construction Equipment
Mining & Oilfield Service Hoses
Agriculture & Irrigation Systems
High-Pressure Water Treatment & Pumping
Commercial Vehicle Exhaust & Air Intake
Package: small bag/box + outer carton + pallet

Q1: What makes a hose clamp "Heavy Duty" compared to standard worm gear clamps?
A: Heavy-duty clamps feature a thicker band, a reinforced housing, and a high-strength bolt (typically M6, M8, or M10) instead of a simple screw. This construction allows for significantly higher tightening torque and a 360-degree leak-proof seal on reinforced or thick-walled hoses.
Q2: Which material should I choose: SS304 or SS316?
A: SS304 is excellent for most industrial and automotive applications with good corrosion resistance. However, if your application involves saltwater, marine environments, or highly corrosive chemicals, we recommend SS316 for its superior molybdenum content and longevity.
Q3: Can these clamps withstand high-vibration environments?
A: Yes. Our heavy-duty series is engineered with a non-slip locking mechanism and robust bolt tensioning, making them ideal for mining machinery, construction equipment, and heavy-duty truck exhaust systems where vibration is constant.
Q4: Do these clamps damage the hose surface under high pressure?
A: No. Our clamps are designed with rounded band edges (bevelled edges). This ensures that even under maximum torque, the clamp provides a firm grip without cutting, shearing, or abrading the hose surface.
Q5: What is the maximum torque rating for your Heavy Duty series?
A: Torque ratings vary by size and bolt specification (e.g., G-style or T-bolt). Generally, our heavy-duty clamps support torques from 8Nm to 25Nm+. Please contact our technical team for the specific data sheet for your required size.
Q6: Do you provide custom sizes or OEM branding?
A: As a professional manufacturer, we offer full OEM/ODM services. We can customize band widths, diameters, and materials, and even laser-etch your logo onto the clamps for bulk orders.