Iron double bolt clamp

Maximum Power: Heavy Duty Double Bolt Clamps

RockClamp’s double bolt hose clamps are the ultimate solution for securing large-diameter, high-pressure hoses. Engineered with dual high-tensile bolts and a rugged saddle design, these clamps provide an exceptionally powerful grip that prevents hose blow-outs in the most demanding industrial environments.

It features a forged malleable iron construction with dual-serrated gripping ridges for superior hose retention. The reinforced bolt lugs provide exceptional resistance to bending deformation, while corrosion-resistant hex nuts ensure secure fastening. The dual-bolt design provides superior clamping force and even pressure distribution, while the industrial-grade fasteners ensure reliable performance in demanding applications.

 

Material: Iron

MILL TEST REPORT  

C	Si	Mn	P	S	Tensile Strength	Elongation
2.76	1.65	0.55	≤ 0.07	≤ 0.15	300 Mpa	6%

 

Double bolt clamp Features:

- Dual-Serrated Inner Grip Surface

 Precision-engineered parallel ridges provide 360° positive hose retention

 Creates fail-safe anti-slip contact points even under vibration

- Structural Bolt Lug Reinforcement

 Forged shoulder design prevents misalignment during tightening

 Maintains clamping integrity at specified torque values

- Critical Pre-Installation Requirement

 Measure hose outer diameter (OD) with calipers at multiple points

 Always order clamps based on actual measured OD, not nominal size

 

Dimension chart: 

Part No	Size	Dimension Range
IDB22	SL-22	20-22mm
IDB29	SL-29	22-29mm
IDB34	SL-34	29-34mm
IDB40	SL-40	34-40mm
IDB49	SL-49	40-49mm
IDB60	SL-60	49-60mm
IDB76	SL-76	60-76mm
IDB94	SL-94	76-94mm
IDB115	SL-115	94-115mm
IDB100	SL-400	90-100mm

 

How to install the double bolt clamp: 

- Inspect the Pipe Surface

 Ensure the pipe/hose end is clean, smooth, and free of debris to prevent leaks or damage.

 Verify there are no sharp edges that could cut into the sealing surface.

- Align and Position the Clamp

 Place the two clamp halves around the hose/pipe, ensuring proper alignment.

 Insert the bolts through the reinforced lugs, making sure they seat fully.

- Secure the Clamp

 Hand-tighten the nuts first to ensure the clamp is evenly seated.

 Use a calibrated torque wrench to tighten the nuts to the specified torque value.

 Critical Check: Ensure the oval neck of the bolt fully engages with the bolt hole for proper load distribution.

- Final Verification

 Confirm the clamp is centered and evenly tightened on the hose/pipe.

 Do not over-torque, as this may deform the clamp or damage the hose.

 

Primary Applications

 

- Mining & Dredging: Securing heavy-duty suction and discharge hoses.

- Construction: High-pressure air compressor lines and concrete pumping.

- Agriculture: Large-scale irrigation systems and liquid manure transport.

- Oil & Gas: Transferring fluids in demanding offshore or field conditions.

 

Package: small bag/box + outer carton + pallet 

FAQ: Double Bolt Hose Clamps

 

• Q: When should I use a double bolt clamp instead of a T-bolt clamp?

  • A: Double bolt clamps are preferred for much larger, thicker, and stiffer hoses (like wire-reinforced suction hoses) where a T-bolt clamp may not provide enough radial force or durability.

• Q: What is the benefit of the "inner ridges" on these clamps?

  • A: The ridges provide a mechanical interlock with the hose surface, ensuring the hose cannot slip out even under extreme pressure or vibration.

• Q: Are these clamps compatible with universal claw couplings?

  • A: Yes, our double bolt clamps are frequently used in conjunction with "Chicago" style universal couplings and sandblast couplings for a safe, high-pressure connection.

• Q: Do you offer different finishes for corrosive environments?

  • A: Our standard is yellow or white zinc plating. For extreme environments, we can provide hot-dip galvanizing for thicker protection against salt and moisture.