Hi-Tech Metal & Tubes manufactures 3 Layer polyethylene externally coated and fusion bonded epoxy internally lined steel pipes in diameter ranges from 300 mm to 3000 mm. This coating provides excellent corrosion resistance, chemical resistance, electrical resistance, and has very low moisture permeability. Internal lining of potable water contact approved FBE provides low frictional resistance to flow. Ideally suited for potable water and oil and gas applications. The three coating layers in 3-LPE coated pipe are as follows:
Layer 1: This is the corrosion protective layer. This layer is of fusion bonded epoxy which offers very good corrosion protection. The fusion bonded epoxy has a very good bonding with the blasted steel surface.
Layer 2: This layer is the copolymer adhesive. The copolymer adhesive is a maleic anhydride grafted polyethylene compound. This material has good chemical bonding to the fusion bonded epoxy and the top layer polyethylene
Layer 3: This layer is for physical protection and consists of polyethylene. Since the copolymer adhesive and polyethylene are similar, they bond well with each other.
3LPE coated and fusion bonded epoxy internally lined pipes are manufactured according the following standards:
Long Working Life:
Low Frictional Coefficient:
3 layer polyethylene coated and fusion bonded epoxy lined pipes are used for buried or submerged pipelines. These coated and lined steel pipes have excellent long term corrosion resistance & very good resistance to cathodic disbondment.
3 layer polyethylene coated and fusion bonded epoxy lined pipes are used in the following applications where the pipes are either buried or submerged:
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