External multi layer PE and/or PP coating:
3LPE / 3LPP) is a coating system applied to the surface of steel pipes using thermoplastic polyolefins.
The main purpose of the system is to provide anticorrosive and mechanical protection for the pipes
The pipes are first cleaned and heated. Then the powder epoxy is applied, forming the first layer of the system. This is followed by the application of a copolymeric adhesive via extrusion to provide the adherence necessary between the primer and the third system layer. Finally, a polyolefin (Polyethylene or Polypropylene) is applied, also via extrusion, completing the three layer system.
This system is suitable for underground gas and oil pipelines and underwater installations.
Typically the two systems have a thickness ranging from 2 to 4mm. The 3LPE and 3LPP external coating plant is equipped to coat pipes with a nominal diameter ranging from 6” to 64”, with wall thickness up to 36 mm and lengths ranging from 8m to 16m.
Internal coating system for steel pipes using epoxy-based liquid painting.
The main purpose of this system is to improve liquid flow by reducing the roughness of the pipe’s internal surface, in addition to providing protection against corrosion.
The internal surface of the pipe is cleaned previously. After cleaning, the epoxy paint is applied to the pipe’s inner surface through an airless guns system, forming a uniform layer that cures in the curing chamber (it is a heat insulated hull in which the hot air with a temperature of approx 50 -60 deg. C is circulating). The thickness for the internal coating varies between 70 and 500μm (as per customer specification) for the transmission of dry-gas, sour gas, potable water, sewage or oil.
The internal coating unit is equipped to coat pipes with a nominal diameter ranging from 08” to 64” and lengths ranging from 8m to 16m.