The technical way to solve the pipeline corrosion

Main technical way to solve water supply pipeline corrosion problem are:

Scraping method

1. The high pressure jet method

This kind of method, can don't need a broken pipe surface using pipe itself some accessories for descaling.Spray nozzle diameter is small, the descaling effect of water nozzle distance as close as possible.So clean the pipe diameter is suitable for medium and small pipe.

2. Mechanical scraping

Mechanical scraping construction length, average every time can blow pipe 100-100 meters, for the long distance pipeline to be divided into several cleaning section, disconnect, respectively is presented.The implementation, increasing artificial excavation and construction of water cut off time of quantities.Mechanical scraping coating line for each working period, needs to cut pipe, scraping, coating line, cement mortar maintenance, wash pipe, such as multi-channel processes, typically 5 to 7 days to complete.

3. The elastic clamp method

Poly real - Pig, meaning is to use inflatable special tool to scrape off the pipeline wall attachments.Use poly real - pig cleaning pipes, targeting different hardness and softness of rust, scale, choose different forms of pig, can get rid of the rust on the pipe scale, can also be carried out on the new water pipe top clearance, and water saving, high efficiency.Poly real - Pig pigging method used in various diameter pipe descaling DN100 above work, a pigging length can be dozens of meters to thousands of meters, as long as the pipe diameter does not change, but by any Angle of the bend and valve (except butterfly valves), for pigging long distance.Pigging construction water supply time is short, generally 100 m pipes, with just one day can be cleaned, and restore the water supply.Weakness is the present domestic haven't matched the lining technology. In addition, the cleaning effect is not very good.

4. Air pulse method

This method use changing pressure air water mixture to make pipe wall attachments to fall off, this is a particularly suitable for urban water supply pipe cleaning method.

Pipe lining method

1. The cement mortar lining

The adhesion strength of the cement mortar lining on its own and wall bracket, stable structure, its roughness coefficient is smaller than metal pipe, the pipe wall can have physical performance guarantee, also can have chemical and corrosion resistance, for cement in contact with the metal tube wall, form a high pH value.

2. The epoxy resin coating line method

Epoxy resin has abrasion resistance, softness, tightness, epoxy resin and hardener mixture of reactive resin, fast, strong and durable coating can be formed.Method of epoxy resin coating a coating thickness to 0.5 1 mm, can meet the requirements of anti-corrosion.Using speed hard epoxy resin coating line, after 2 hours of maintenance, cleaning after drainage can make the pipeline operation.

3. The lining tube method

With lining hose method to solve the old pipeline anticorrosion method, slip line method, the inversion lining method, "socks" and use Poly real - Pig towing polyurethane membrane method, etc.These methods all can form a "pipe in pipe" corrosion forms, corrosion effect is very good, in the long distance without branch pipe is especially, but not suitable for urban water supply pipeline.