BONLOK is a permanent pipe connection equivalent to a welded joint. Based on Swage technology, which utilizing two 360° metal to metal sealing rings (no o-rings). Perfect design, exquisite Swiss technology and superior quality make BONLOK widely used around the world. BONLOK is designed to be convenient, highly-effective, safe and reliable and is certified by all major international classification societies.
- Offshore Oil / Gas;
- Ship Building;
- Petroleum / Chemical Industry;
- Plant Constructions;
- Machinery Construction;
- Hospital Installation;
- Food/ Dairy/ Sugar Processing Industry;
- Nuclear Reactors
- Fire suppression;
- Sprinkler Systems;
- Compressed Air Systems;
- Heating Systems;
- Water Piping;
- Sewage Systems;
- High-pressure Washing;
- Hydraulic Fluids
- Bilge & Ballast piping
- Vent & Sounding piping
- Salt Water Cooling piping
Swage Technology: What is it?
Swaging is the controlled uniform reduction of the fitting end over the tube whereby forces are applied equally; 360 degrees around the fitting. The result of swaging creates a permanent connection between the fitting and tubing by plastically deforming them together as an assembly.
The swaging process also controls the elastic rebound of the tube within the fitting bore to create a sound mechanical connection and permanent fluid containment seal.
During installation, the driver placed over the fitting body swages the body onto the pipe or tube surface, compressing the pipe/tube wall, first elastically and then plastically. The pipe/tube wall resists this swaging action, generating high unit compressive loads at the contact points between narrow sealing lands inside the fitting body and the pipe/tube surface (RINGS).
These contact stresses are sufficiently high to plastically yield the pipe/tube surface under the sealing lands, forming a perfect 360° circumferential, permanent, metal-to-metal seal between the pipe/tube and the fitting body. The driver, which experiences a small increase in diameter (elastic strain) during installation, exerts an elastic, radial preload on the metallic seals for the life of the connection.
Fittings Produced in:
- Zinc coated Carbon Steel St45
- Stainless Steel 304
- Stainless Steel 316L
Custom materials are available via special order.
Metric, from 4mm to 80mm
Imperial, 1/4″ to 6″
Bonlok Pressure Test
The Bonlok fitting is designed to withstand a working pressure (PN) higher than the one of the pipe in use.
Trial Example using small diameter pipe size and wall thickness
- Sample: Bonlok Standard Coupling
- Pipe OD: 3/8” (17.2 mm)
- Wall thickness: 2.5 mm
- Pipe material: Carbon Steel
Bonlok Press Kit Range
Bonlok Manufacture 12 Press Kits, that range from 1/4″ to 6″ (4-168mm)
Compact and Lightweight hydraulic installation tools only require one plan of access on fitting application