How to Extend the Service Life of Spiral Steel Pipe ?

In fact, the spiral tube itself has no service life, but because it is used in different environments, it will wear the spiral tube, which will affect the service life of the spiral tube. In this case, how can we extend the service life of the spiral tube?

Anti-corrosion spiral steel pipe(SSAW steel pipe) refers to the steel pipe that can be processed by anti-corrosion technology, which can effectively avoid or slow down the chemical or electrochemical reaction during transportation and use. The anticorrosive spiral steel pipe can effectively avoid or slow down corrosion, extend the service life of the steel pipe, and reduce the running cost of the steel pipe.

The most commonly used anti-corrosion coatings for steel pipelines include petroleum asphalt, PE jacket and PE foam jacket, epoxy coal tar, coal tar enamel, epoxy powder and three-layer composite structure, epoxy coal tar pitch (PF type) , Rubber-plastic epoxy coal tar pitch cold-wrapped tape (RPC type), etc. Now several widely used pipeline anti-corrosion methods are three-layer PE composite structure, single-layer powder epoxy, PF-type cold-wrapped tape, RPC-type cold-wrapped band.

1. Petroleum asphalt has a wide range of raw materials and low prices. However, working conditions are poor, quality is difficult to ensure, and environmental pollution is severe.

2. Epoxy coal tar pitch is easy to operate, but the covering layer has a long curing time and is greatly affected by the environment. It is not suitable for field operations and is difficult to construct below 10°C.

3. Epoxy powder anti-corrosion, using electrostatic spraying method, good fusion with the same kind of material anti-corrosion pipe body, strong adhesion, but epoxy powder has poor water resistance (high water absorption rate up to 0.83%), to the cathode The protection design brings certain difficulties. The on-site appliances require high requirements, the operation is difficult, and the quality is not easy to control.

4. 3PE heat-shrinkable materials, strong pipeline anti-corrosion and sealing, high mechanical strength, strong waterproofness, stable quality, convenient construction, good applicability, and no pollution to the environment. PE has low water absorption rate (less than 0.01%), together with high epoxy strength, low PE water absorption and good hot melt adhesive flexibility. It has high corrosion resistance and reliability. The defect is: compared with other patch materials, high cost.

5. The construction of PF type and RPC type cold-wrapped tapes is simple and easy. The matching three types of sizing adhesives enable PF-type epoxy coal tar pitch cold-wrapped tapes to be constructed in any environment, any season, and any temperature conditions.

6. The characteristics of cold-wrapped tape and 3PE heat-shrinkable tape are: it is suitable for all kinds of material main anti-corrosion pipes, while other methods are suitable for main anti-corrosion pipes of the same or close to the material.

Secondly, some pipelines also need insulation during anticorrosion. Petroleum is a messy mixture, which is easy to corrode pipelines. Anticorrosion is necessary. However, product oil pipelines also need to be insulated when they are anticorrosive. In the north or winter, heat expansion and contraction. The pipeline will freeze and crack, affecting stable supply.

Tips: ASTM A53 Grade B Seamless is our most popular product under this specification and A53 pipe is commonly dual certified to A106 B Seamless pipe.

ASTM A53 Grade B is the material under the American steel pipe standard, API 5L Gr.B is also the American standard material, A53 GR.B ERW refers to the electric resistance welded steel pipe of A53 GR.B; API 5L GR.B Welded refers to the material Welded steel pipe of API 5L GR.B.