Engineered for high-pressure, high-torque clamping scenarios, our 15.8mm heavy duty constant torque hose clamps deliver stable, long-lasting sealing performance for demanding industrial and mechanical environments. As a robust American-style worm gear clamp, it is designed to maintain secure, slip-free connections even under temperature fluctuations, continuous vibration, and varying system pressures.
This clamp features a heavy four-point locking structure that distributes tightening force evenly across the 15.8mm wide perforated steel band, maximizing clamping efficiency while avoiding concentrated stress that can damage hose surfaces.
All core structural parts are manufactured from 304 stainless steel (W4 grade), delivering reliable corrosion resistance and structural integrity for extended use in harsh working conditions.
| Component | Material |
|---|---|
| Hoop strap | 304 Stainless Steel |
| Hoop shell | 304 Stainless Steel |
| Screw | 304 Stainless Steel |
| Overall grade | W4 |
The constant torque design delivers consistent, even clamping force around the full circumference of the hose, eliminating uneven pressure points that cause leaks or premature hose wear. This self-compensating structure adapts to minor thermal expansion and contraction of tubing, preserving a tight seal over long service cycles.
| Performance Index | W4 Grade Specification |
|---|---|
| Free Torque | ≤1.0Nm |
| Load Torque | ≥15Nm |
The precision worm gear mechanism enables smooth, fine-tuned adjustment during installation, reducing assembly time while ensuring a consistent fit that resists loosening from equipment vibration or thermal cycling.
| Specification (mm) | Range (in) | Bandwidth (mm) | Material |
| 11-20 | 7/16"-25/32" | 15.8 | SS201/SS304/SS316 |
| 13-23 | 1/2"-29/32" | 15.8 | SS201/SS304/SS316 |
| 14-27 | 9/16"-1 1/16" | 15.8 | SS201/SS304/SS316 |
| 18-32 | 11/16"-1 1/4" | 15.8 | SS201/SS304/SS316 |
| 21-38 | 13/16"-1 1/2" | 15.8 | SS201/SS304/SS316 |
| 21-44 | 13/16"-1 3/4" | 15.8 | SS201/SS304/SS316 |
| 25-45 | 1"1/3/4" | 15.8 | SS201/SS304/SS316 |
| 27-51 | 1 1/16"-2" | 15.8 | SS201/SS304/SS316 |
| 32-54 | 1 1/4"-2 1/8" | 15.8 | SS201/SS304/SS316 |
| 33-57 | 1 5/16"-2 1/4" | 15.8 | SS201/SS304/SS316 |
| 40-64 | 1 9/16"-2 1/2" | 15.8 | SS201/SS304/SS316 |
| 44-67 | 1 3/4"-2 5/8" | 15.8 | SS201/SS304/SS316 |
| 46-70 | 1 13/16"-2 3/4" | 15.8 | SS201/SS304/SS316 |
| 52-76 | 2 1/16"-3" | 15.8 | SS201/SS304/SS316 |
| 57-79 | 2 1/4"-3 1/8" | 15.8 | SS201/SS304/SS316 |
| 59-83 | 2 5/16"-3 1/4" | 15.8 | SS201/SS304/SS316 |
| 65-89 | 2 9/16"-3 1/2" | 15.8 | SS201/SS304/SS316 |
| 70-92 | 2 3/4"-3 5/8" | 15.8 | SS201/SS304/SS316 |
| 71-95 | 2 13/16"-3 3/4" | 15.8 | SS201/SS304/SS316 |
| 78-102 | 3 1/16"-4" | 15.8 | SS201/SS304/SS316 |
| 83-105 | 3 1/4"-4 1/8" | 15.8 | SS201/SS304/SS316 |
| 84-108 | 3 5/16"-4 1/4" | 15.8 | SS201/SS304/SS316 |
| 90-114 | 3 9/16"-4 1/2" | 15.8 | SS201/SS304/SS316 |
| 95-117 | 3 3/4"-4 5/8" | 15.8 | SS201/SS304/SS316 |
| 103-127 | 4 1/16"-5" | 15.8 | SS201/SS304/SS316 |
| 108-130 | 4 1/4"-5 1/8" | 15.8 | SS201/SS304/SS316 |
| 117-140 | 4 5/8"-5 1/2" | 15.8 | SS201/SS304/SS316 |
| 121-143 | 4 3/4"-5 5/8" | 15.8 | SS201/SS304/SS316 |
| 130-152 | 5 1/8"-6" | 15.8 | SS201/SS304/SS316 |
| 133-156 | 5 1/4"-6 1/8" | 15.8 | SS201/SS304/SS316 |
| 141-165 | 5 9/16"-6 1/2" | 15.8 | SS201/SS304/SS316 |
| 146-168 | 5 3/4"-6 5/8" | 15.8 | SS201/SS304/SS316 |
| 157-178 | 6 3/16"-7" | 15.8 | SS201/SS304/SS316 |
| 159-181 | 6 1/4"-7 1/8" | 15.8 | SS201/SS304/SS316 |
| 171-194 | 6 3/4"-7 5/8" | 15.8 | SS201/SS304/SS316 |
| 184-206 | 7 1/4"-8 1/8" | 15.8 | SS201/SS304/SS316 |
| 197-219 | 7 3/4"-8 5/8" | 15.8 | SS201/SS304/SS316 |
| 210-232 | 8 1/4"-9 1/8" | 15.8 | SS201/SS304/SS316 |
Automotive fluid systems, air intake and engine exhaust components
Sealing for heavy agricultural and construction equipment
Chemical processing and industrial fluid transfer lines
Food and beverage processing piping
Traffic signage, street lighting and billboard mounting
General industrial plumbing and drainage systems
15.8mm Wide Steel Band: Enlarged contact area disperses clamping stress evenly, boosts holding force and avoids damaging the hose outer wall.
Reinforced 4-Point Lock: Efficient torque transfer with ≥15Nm load torque, delivers firm locking and resists loosening under continuous vibration.
Constant Torque Sealing: Uniform 360° clamping force, self-compensates for thermal expansion and contraction to maintain long-term leak-proof performance.
Full 304 Stainless Steel (W4 Grade): All core components adopt 304 stainless steel for reliable corrosion resistance and extended service life.
Precision Worm Gear Drive: ≤1.0Nm free torque enables smooth, accurate adjustment, simplifies installation and cuts assembly time.
Wide Compatibility: Suitable for silicone, hydraulic, plastic and steel-lined rubber hoses, applicable to industrial, automotive and outdoor scenarios.
Beyond our standard diameter range (11mm–232mm), we support fully customized clamp dimensions and specifications to match your unique hose outer diameter and application requirements. Our technical team can work directly with your project drawings to produce tailored solutions.
Mika (Tianjin) Pipeline Technology Co., Ltd. is a specialized manufacturer of high-quality pipe clamping solutions, focused on delivering dependable, leak-proof connections for industrial and commercial clients worldwide.
Our products serve a wide range of applications including automotive systems, military equipment, air intake & engine exhaust systems, cooling and heating infrastructure, irrigation networks and industrial drainage systems.
With nearly 100 employees across sales, design, production and after-sales teams — including 15 client support specialists and 8 technical engineers (5 senior engineers) — we operate with a pragmatic, solution-focused company culture to support customers from initial specification through to after-sales service.
A: Our 15.8mm heavy duty clamps use 304 stainless steel for all structural components (band, housing and screw) with a W4 material grade, offering solid corrosion resistance and high mechanical strength for industrial environments.
A: For W4 grade units, the rated load torque reaches ≥15Nm for secure heavy-duty clamping, while the free running torque is ≤1.0Nm for smooth, easy adjustment during installation.
A: We carry standard sizes covering clamping ranges from 11mm up to 232mm. You can refer to our full size chart, or reach out for custom diameter options for special projects.
A: Yes, the 304 stainless steel construction provides reliable corrosion resistance for outdoor installation and general industrial exposure. For highly corrosive scenarios, we also offer SS316 grade options upon request.
A: Absolutely. Alongside our standard catalog, we accept custom size and specification orders to fit non-standard hose dimensions and specialized application requirements.