services
Quetar Pipeline Services Limited specializes in pipe coating applications, namely:
3LP Coating
The 3 layer polyethylene coated pipes are the preferred choice for transmission of oil and gas around the world.
3LPE Coated Pipes consist of 3 layers of pipeline coating.
Layer 1 consists of Fusion Bonded Epoxy. This layer provides protection against corrosion and is fusion bonded with the blasted-cleaned surface.
Layer 2 is a copolymer adhesive which has excellent chemical bonding to the FBE layer and the top layer of polyethylene.
Layer 3 is the layer of polyethylene or polyproplyene used for protection against any physical damage of the pipes.
The 3 layer polyethylene coated pipes are the preferred choice for transmission of oil and gas around the world. It can withstand varied temperatures and environments ranging from dessert dry lands to deep underwater regions. 3LPE/PP coated steel pipes are used for transportation of drinking water, oil and gas and other fluids. The 3LPE coated pipes can be used in the high temperatures as high as 60°C to 80°C.
Features of 3LPE coated pipes:
- Excellent chemical and corrosion resistance preventing steel pipes from any damage.
- Resistance to cathodic disbondment.
- The external layer of polyethylene prevents any physical damages to either the pipes or the fusion bonded epoxy during handling.
- The 3LPE coated pipes have high performance characteristics and an extended life cycle.
Concrete Weight Coating
The concrete weight coating of pipes is carried out when the pipeline must be laid sub-sea or passes a lake or river crossing.
The concrete weight coating of pipes is carried out when the pipeline must be laid sub-sea or passes a lake or river crossing.
The major goal is to give the pipe additional weight (negative buoyancy) to prevent floating or displacement of the pipeline, as well as to provide mechanical protection.
The concrete consists of a mixture of iron-ore or granite, sand and cement with wire reinforcement wire and can be prepared with a specific weight varying roughly from 2200 – 3500 kg/m³.
The application procedure for concrete generally involves impingement (blast spraying) or wrap-on.
For reinforcement, either prefabricated cages or a special wire mesh can be used. The cages are placed over the pipe prior to the coating. The wire mesh is applied as a continuous wrap, on the pipe during the application of the concrete.