HIGH-PRECISION HYDRAULIC BOLT TENSIONERS. UNIFORM PRE-LOADING & LEAK-FREE JOINTS.
Engineered for extreme industrial applications, Boltorq top-side hydraulic bolt tensioners physically stretch studs axially to eliminate rotational friction. Designed to match major international flange standards (ANSI, ASME, API, ISO, and DIN), our tensioners deliver certified accuracy across heavy engineering and plant turnaround environments.
BOLTORQ BbT SERIES TOP-SIDE TENSIONERS
Designed for precise pre-loading and de-tensioning of standard studs, ensuring uniform gasket compression on critical pressure vessels and heat exchangers.
BOLTORQ HEAVY INFRASTRUCTURE TENSIONERS
Heavy-duty alloy steel tensioning units built for large-scale nuclear, wind turbine, and petrochemical column bolting.
| Model (Metric) | Bolt / Stud Size | Model (Imperial) | Rated Capacity (Ton) | Capacity @ 1500 Bar (KN) | Stroke (mm) | Effective Area (cm²) | Load Cell Weight (Approx. Kg) |
| BT-15-24-16 | M16 | – | 24 | 243 | 10 | 1.5 | 1.5 |
| BT-15-24-22 | M22 | 7/8″ | 24 | 243 | 10 | 1.5 | 1.5 |
| BT-15-50-33 | M33 | 1-1/4″ | 50 | 486 | 15 | 2.5 | 2.5 |
| BT-15-90-48 | M48 | 1-7/8″ | 90 | 896 | 15 | 4.2 | 4.2 |
| BT-15-125-64 | M64 | 2-1/2″ | 125 | 1245 | 15 | 6.4 | 6.4 |
| BT-15-185-72 | M72 | 2-3/4″ | 185 | 1845 | 15 | 9.0 | 9.0 |
| BT-15-265-90 | M90 | 3-1/2″ | 265 | 2640 | 15 | 15.3 | 15.3 |
WHY CHOOSE HYDRAULIC TENSIONING OVER TRADITIONAL TORQUING?
Unlike standard torque wrenches that rotate nuts against joint surfaces—introducing unpredictable friction and galling—Boltorq hydraulic bolt tensioners apply direct axial stretch to the stud:
Simultaneous Multi-Stud Tensioning
Allows multiple studs around a flange to be tightened concurrently, ensuring perfectly even gasket compression.
Friction-Free Accuracy
Eliminates thread friction variables, guaranteeing exact load conversion and zero torsional stress on bolts.
Universal Flange Compatibility
Standard bridge and socket configurations integrate seamlessly with major global industrial specifications (ANSI, ASME, API, ISO, DIN).
Pneumatic & Hand Pump Integration
Fully compatible with lightweight aluminum hand pumps for remote maintenance and high-performance air-operated BTPHP series pumps.
CRITICAL INFRASTRUCTURE DEPLOYMENTS & MAINTENANCE ADVISORY.
Operating a heavy bolting system requires absolute precision to prevent under-torquing or catastrophic flange blowout. The Boltorq BT-DC series simplifies complex joint assembly through an intelligent micro-processor workflow:
Key Plant Applications
Essential for high-pressure pressure vessels, boiler feed pumps, compressor covers, heat exchangers, and critical pipeline flanges.
Target Industries
Widely deployed across oil & gas refineries, petrochemical complexes, steel and cement plants, power generation stations, shipbuilding, and heavy EPC projects.
Mandatory Best Practice
Always clean and thoroughly lubricate stud threads before tensioning to ensure optimum load transfer and accurate pre-loading results.
FREQUENTLY ASKED QUESTIONS ABOUT
HYDRAULIC BOLT TENSIONERS
What is the primary difference between bolt torquing and bolt tensioning?
Torquing turns the nut to create tension, which creates friction losses. Bolt tensioning uses hydraulic pressure to physically stretch the bolt straight up, allowing the nut to be spun down effortlessly before releasing pressure.
Are Boltorq tensioners compatible with international flange standards?
Yes, they are engineered to match major global flange standards including ANSI, ASME, API, ISO, and DIN.
What pumps should be used to operate BBT tensioners?
They can be paired with lightweight aluminum hand pumps for remote job sites or high-efficiency air-operated pneumatic pumps (such as the BTPHP series) for rapid, continuous operations.
How can I place an order or request custom dimensions?
Contact our engineering and export desk directly at sales@boltorq.com or info@boltorq.com, or call +91 98927 03895.
ELIMINATE FLANGE LEAKS WITH CERTIFIED BOLTORQ TENSIONERS.
Email sales@boltorq.com to configure your custom multi-tensioner link assembly and high-pressure pump package today.