3PP Anti-corrosion Steel Pipe

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of 3pp anti-corrosion steel pipe in China, featured by quality products and low price. If you're going to wholesale durable 3pp anti-corrosion steel pipe made in China, welcome to get pricelist and free sample from our factory.

3PP ANTI-CORROSION STEEL PIPE

3PP anti-corrosion coating steel pipe, 3PP anti-corrosion seamless steel pipe, 3PP anti-corrosion welded steel pipe, 3PP anti-corrosion ERW steel pipe.

The 3PP anti-corrosion coating system shall consist of three layers:

1st layer: Fused Bonded Epoxy primer (FBE)

2nd layer: Adhesive (powder sprayed)

3rd layer: Polypropylene top layer (applied by extrusion)

Details of  3PP anti-corrosion steel pipe

The most important of 3PP anticorrosion is that 3PP have a long life span in high temperature environment, especially in buried ground of high temperature environment.

ith a good solid coating, Coating temperature up to 110 degrees.

PP three-tier structure of anti-corrosion pipeline: the first layer of epoxy powder (FBE50 - 100um), the second adhesive (AD) 250 - 400um, the third layer of polypropylene (PP) 1.4 - 4.0mm. Three of the integration, and steel pipe with a good solid coating, Coating temperature up to 110 degrees.

Manufacturing process of 3PP anti-corrosion steel pipe

First, Pipe Pre-heating

Temperature variation due to in-coming pipe temperature, line speed variation, pipe wall thickness variation, thermal radiation, production interruptions, etc. shall be established and documented. Proper functioning of pipe temperature monitoring and recording system including audible alarm shall be demonstrated.

Second, Surface Preparation

The ratio of shots to grits shall be established and documented so that after blast cleaning, surface finish, surface profile and anchor pattern requirements of this specification are achieved. Effectiveness of dust collection system shall be demonstrated by checking degree of dust on the cleaned surface of the pipes.

Third, Pipe Heating and Epoxy Powder Spraying

Parameters affecting pipe heating such as rating, frequency of induction heater or number of burners in case of gasheating, pipe thickness and line speed, and parameters affecting epoxy spraying such as air pressure in the spray guns, dew point of air, pipe surface temperature, etc. shall be established and documented so that specified minimum epoxy thickness and other coating quality requirements are met with.

Fourth, Adhesive and PP Application

Parameters affecting application of co-polymer adhesive and polypropylene layers such as line speed, curing time of fusion bonded epoxy and temperature of co-polymer adhesive and polypropylene, cooling time and temperature, etc. shall be established and documented so that specified minimum coating thickness and other quality requirements specified are met with.

Product show of 3PP anti-corrosion steel pipe

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