Double-Bolt Heavy-Duty Hose Clamp
A heavy-duty double-bolt clamp designed for secure pipe and hose fastening where a wide band, strong tensile force and stable mechanical retention are required. The symmetrical two-bolt construction supports firm tightening across industrial piping, irrigation, drainage, marine and machinery applications.
Heavy-Duty Fastening with a Balanced Double-Bolt Structure
The Double-Bolt Heavy-Duty Hose Clamp is built for hose and pipe connections that require more substantial fastening than a light-duty worm-drive clamp. Two opposing bolt assemblies tighten the wide steel band around the connection, creating a rigid and serviceable mechanical joint.
When both bolts are tightened progressively and evenly, the clamp can apply force more symmetrically around the pipe or hose connection. The design also provides a broad adjustment range, making it useful across industrial piping, machinery, agriculture, irrigation, drainage and marine systems.
DISLAB PRECISION supplies W1 carbon-steel, W4 stainless-steel and W5 SS316 configurations, with 20 mm and 24 mm band widths covering standard listed clamping ranges from 30–40 mm through 300–310 mm.
Double-Bolt Heavy-Duty Hose Clamp from Multiple Angles
Multiple product views provide a clearer reference for the wide band, opposing bolt assemblies, bridge structure and circular clamping profile.
Built for Strong Mechanical Retention
The clamp combines a wide steel band with two bolt assemblies to provide a substantial fastening structure for demanding hose and pipe installations.
Double-Bolt Tightening
Two opposing bolts allow the installer to tighten the clamp from both sides, supporting a secure mechanical connection around larger hose and pipe diameters.
High Break Torque
The heavy-duty structure is designed for applications where a substantial clamp body and strong fastening mechanism are preferred.
Excellent Tensile Force
The wide band and paired fasteners provide a robust structure for maintaining mechanical retention around industrial hose and pipe connections.
Large Adjustment Range
Standard sizes cover a broad range of pipe and hose diameters, from 30 mm class connections to applications exceeding 300 mm.
Wide Band with Opposing Bolt Assemblies
The clamp surrounds the connection with a wide band while two bolt assemblies draw the structure together during installation.
Tighten Both Bolts Progressively
For installation, the clamp should be positioned squarely around the connection and the two bolts tightened progressively rather than fully tightening one side first. This helps keep the clamp aligned and allows the two-bolt structure to work as intended.
Wide-Band Construction for Demanding Connections
Close-up views help industrial buyers inspect the fastening points, band profile and clamp construction before choosing the required size and material.
What Problems Does a Double-Bolt Heavy-Duty Hose Clamp Help Solve?
The design is particularly useful when larger connection diameters, wider contact surfaces and stronger mechanical fastening are required.
Insufficient Holding Strength
Lightweight clamps may not provide the structure required for larger or more demanding connections. The paired bolt system provides a more substantial fastening arrangement.
Uneven Tightening
Tightening from two opposing fastening points gives the installer greater control over clamp alignment and force distribution around the connection.
Large Hose and Pipe Diameters
Standard configurations extend to 300–310 mm, providing options for larger industrial hoses, drainage lines and piping connections.
Corrosive Service Environments
W4 stainless steel and W5 SS316 configurations provide material alternatives where greater corrosion resistance is required than general carbon steel.
Double-Bolt Heavy-Duty Hose Clamp Specifications
Band width and bolt configuration change with the clamp diameter. Confirm the required size and material when requesting a quotation.
General Product Parameters
| Parameter | Available Specification |
|---|---|
| Product Type | Double-Bolt Heavy-Duty Hose Clamp |
| Standard Size Range | 30–40 mm through 300–310 mm |
| Band Width | 20 mm / 24 mm |
| Band Thickness | 1.0 mm |
| Bolt Configurations | M6 × 50 / M8 × 50 / M8 × 60 |
| Material Classes | W1 / W4 / W5 |
| Applicable Carbon-Steel Finishes | Silver, yellow or white zinc-plated options |
Material Configurations
| Material Class | Band | Bolt | Bridge | Axle |
|---|---|---|---|---|
| W1 | Galvanized Steel | Galvanized Steel | Galvanized Steel | Galvanized Steel |
| W4 | SS200 / SS300 Series | SS200 / SS300 Series | SS200 / SS300 Series | SS200 / SS300 Series |
| W5 | SS316 | SS316 | SS316 | SS316 |
W1 uses galvanized carbon-steel components. W4 uses SS200/SS300-series stainless steel for the listed components, while W5 uses SS316 where higher corrosion resistance is required.
Standard Size and Bolt Table
| Size (mm) | Bolt | Band Width (mm) | Thickness (mm) |
|---|---|---|---|
| 30–40 | M6 × 50 | 20 | 1.0 |
| 35–45 | M6 × 50 | 20 | 1.0 |
| 40–50 | M6 × 50 | 20 | 1.0 |
| 45–55 | M6 × 50 | 20 | 1.0 |
| 50–60 | M6 × 50 | 20 | 1.0 |
| 55–65 | M6 × 50 | 20 | 1.0 |
| 60–70 | M6 × 50 | 20 | 1.0 |
| 65–75 | M6 × 50 | 20 | 1.0 |
| 70–80 | M6 × 50 | 20 | 1.0 |
| 75–85 | M6 × 50 | 20 | 1.0 |
| 80–90 | M6 × 50 | 20 | 1.0 |
| 90–100 | M8 × 50 | 24 | 1.0 |
| 100–110 | M8 × 60 | 24 | 1.0 |
| 110–120 | M8 × 60 | 24 | 1.0 |
| 120–130 | M8 × 60 | 24 | 1.0 |
| 130–140 | M8 × 60 | 24 | 1.0 |
| 140–150 | M8 × 60 | 24 | 1.0 |
| 150–160 | M8 × 60 | 24 | 1.0 |
| 160–170 | M8 × 60 | 24 | 1.0 |
| 170–180 | M8 × 60 | 24 | 1.0 |
| 180–190 | M8 × 60 | 24 | 1.0 |
| 190–200 | M8 × 60 | 24 | 1.0 |
| 200–210 | M8 × 60 | 24 | 1.0 |
| 210–220 | M8 × 60 | 24 | 1.0 |
| 220–230 | M8 × 60 | 24 | 1.0 |
| 230–240 | M8 × 60 | 24 | 1.0 |
| 240–250 | M8 × 60 | 24 | 1.0 |
| 250–260 | M8 × 60 | 24 | 1.0 |
| 260–270 | M8 × 60 | 24 | 1.0 |
| 270–280 | M8 × 60 | 24 | 1.0 |
| 280–290 | M8 × 60 | 24 | 1.0 |
| 290–300 | M8 × 60 | 24 | 1.0 |
| 300–310 | M8 × 60 | 24 | 1.0 |
The listed table covers the standard reference sizes shown in the product specification. For non-standard diameters, send the required installed hose or pipe outside diameter to DISLAB PRECISION for review.
Where Double-Bolt Heavy-Duty Hose Clamps Are Used
The clamp is intended for heavy-duty hose and pipe fastening where a wide band and serviceable bolted connection are appropriate.
Industrial Piping
Mechanical fastening for compatible water, oil, air and other industrial pipe or hose assemblies.
Agriculture & Irrigation
Used on irrigation lines, pumps, agricultural machinery and large flexible hose connections.
Drainage & Sludge Suction
Suitable for large-diameter drainage and compatible suction-hose connections where substantial fastening is required.
Marine & Offshore Equipment
Stainless-steel configurations can be considered for marine auxiliary piping and moisture-exposed hose assemblies.
Construction & Machinery
Used for hose and piping connections on construction equipment, heavy machinery and mechanical systems.
HVAC & Utility Systems
Applicable to compatible ventilation, utility and building-service connections where this clamp structure matches the installation.
Information to Confirm Before Ordering
Selecting a double-bolt clamp starts with the actual assembled diameter and service environment rather than the nominal pipe size alone.
Measure the hose or pipe connection in its assembled condition and select a clamping range that includes that dimension.
Choose galvanized carbon steel, SS200/SS300-series stainless steel or SS316 according to the surrounding environment.
Standard smaller sizes use a 20 mm band, while the larger listed sizes use a 24 mm band.
The specification changes from M6 × 50 to M8 × 50 and M8 × 60 according to clamp size.
Provide details of moisture, chemicals, salt exposure, temperature and other environmental conditions that influence material selection.
Include estimated order quantity, repeat purchasing requirements and any OEM, labeling or private-label packaging requirements.
Explore the Complete DISLAB PRECISION Clamp Catalog
Compare double-bolt heavy-duty hose clamps, single-bolt clamps, worm-drive clamps, T-bolt clamps, bridge clamps, constant-tension clamps and other industrial fastening products in the complete DISLAB PRECISION collection.
Double-Bolt Heavy-Duty Hose Clamp FAQ
Practical answers for purchasing teams comparing clamp diameter, bolt size, materials and heavy-duty pipe clamp designs.
Why use two bolts instead of a single-bolt clamp?
Two fastening points provide a substantial mechanical structure around the connection. When the bolts are tightened progressively and evenly, the installer can control clamp alignment and tightening from both sides.
When does the clamp change from a 20 mm to a 24 mm band?
The listed 30–40 mm through 80–90 mm sizes use a 20 mm wide band. Beginning with the 90–100 mm range, the table lists a 24 mm wide band.
What bolt sizes are used?
Sizes up to 80–90 mm use M6 × 50 bolts. The 90–100 mm configuration lists M8 × 50 bolts, while sizes from 100–110 mm upward use M8 × 60 bolts.
What is the difference between W1, W4 and W5?
W1 uses galvanized carbon-steel components. W4 uses SS200/SS300-series stainless steel for the listed clamp components. W5 uses SS316 where greater corrosion resistance is required.
Can the clamp be used in marine applications?
Marine and offshore applications are among the listed uses. Material selection remains important, and W5 SS316 can be considered where the installation requires higher corrosion resistance.
Can it be used for irrigation and sludge suction hoses?
Agriculture, irrigation, drainage and sludge suction are listed applications. The selected clamp diameter still needs to match the installed hose and fitting dimensions.
How should the correct clamp size be selected?
Measure the actual outside diameter after the hose is installed over the fitting. Select a clamp range that covers this assembled dimension rather than using the nominal hose bore alone.
What information should I send for a quotation?
Send the installed outside diameter, required clamp range, material class, quantity, application, operating environment, destination country and any packaging or OEM requirements.
Request a Hose Clamp Quotation
Tell us the clamp type, installed hose outside diameter, preferred material, required quantity, application and destination country. Our team will review the details and respond with practical specification and quotation guidance.
Need to send drawings or specifications?
Email your PDF, STEP, DWG, DXF or other reference files directly to [email protected], or send them via WhatsApp.
For CAD drawings, product photos, samples or detailed specifications, submit the form first and then email the files directly to David .