How long is the life of a spiral steel pipe ?

3 125

 
 
Spiral steel pipe itself has no life limit, and the service life is mainly related to the operating environment and production process. Spiral steel pipe operating environment is relatively poor In order to extend the service life, the outer wall and inner diameter of the steel pipe are preserved.

spiral steel pipe, LSAW spiral steel pipe,Inside Epoxy Outside 3 Layer PE Steel Pipe
 
Anti-corrosion steel pipe refers to a steel pipe that has been treated by anti-corrosion technology and can effectively prevent or slow down the corrosion phenomenon caused by chemical or electrochemical reaction during transportation and use. The anti-corrosion steel pipe can effectively prevent or slow down the corrosion and prolong the service life of the steel pipe and reduce the running cost of the steel pipe.
 
The steel pipeline anti-corrosion layer with many domestic applications includes petroleum asphalt, PE jacket and PE foam jacket, epoxy coal tar pitch, coal tar enamel, epoxy powder and three-layer composite structure, and epoxy coal tar pitch cold-wrapped belt (PF type). , rubber-plastic epoxy coal tar cold tape (RPC type), etc., the most widely used pipe anti-corrosion methods are three-layer PE composite structure, single-layer powder epoxy, PF cold-wrapped tape, RPC-type cold Wrap.
 
1, petroleum asphalt, a wide range of raw materials, low prices. However, the working conditions are poor, the quality is difficult to guarantee, and the environmental pollution is serious.
 
2, epoxy coal tar pitch, easy to operate, but the cover layer curing time is long, affected by the environment, not suitable for field operations, difficult to construct below 10 °C.
 
3, epoxy powder anti-corrosion, using electrostatic spraying method, and the same material anti-corrosion tube body is well sintered, strong bonding, but the epoxy powder is poor in water resistance (high water absorption rate, reaching 0.83%), to the cathode Protection design brings certain difficulties. The requirements for on-site appliances are high, the operation is difficult, and the quality is difficult to control.
 
4,3PE heat-shrinkable material, pipeline anti-corrosion sealing, high mechanical strength, strong waterproof, stable quality, convenient construction, good applicability, no pollution to the environment. PE low water absorption (less than 0.01%), with epoxy High strength, low water absorption of PE and good softness of hot melt adhesive, etc., have high corrosion reliability, and the disadvantage is: compared with the cost of other filler materials, the cost is high.
 
5, PF type, RPC type cold-wrapped belt construction is simple and easy, the matching three types of molding glue, so that PF type epoxy coal tar pitch cold-wrapped belt can be constructed in any environment, any season, any temperature conditions.
 
As shown in Fig. 6, the cold-wound tape and the 3PE heat-shrinkable tape are characterized by being applicable to the main-layer anti-corrosion layer pipes of various materials, and the other methods are applicable to the main-purpose anti-corrosion layer pipes of the same or close to the material.
 
Secondly, with the development of some pipelines, it is also necessary to keep warm during the anti-corrosion. The oil is a very complicated mixture, which is easy to corrode the pipeline and anti-corrosion is necessary, but the refined oil pipeline also needs to be insulated in the case of anti-corrosion, in the northeast and winter, Thermal expansion and contraction will freeze the pipe and affect the stable supply.
 
.

Related post

3 Comments

  1. spiral tubes
    spiral tubes 1334107069 -  Reply / Edit

    spiral tubes,OD:159-3000mm WT:2-30mm Material:ST 37-2, Standard:DIN ASTM API GB.

  1. A106 Gr.B gas pipe & tube
    A106 Gr.B gas pipe & tube 1338945429 -  Reply / Edit

    A106 Gr.B gas pipe & tube,Carbon Steel Pipe ASTM A106 Gr.B: 1.ASTM A106, Grade B, A53, A210, DIN17175 etc. Material: 10#, 20#, 35#, 45#, ST37, ST45, CK45, 16Mn, 27SiMn, 20G, 12CrMoVG, 15CrMo, 42CrMo4, 10CrMo910, WB36, A335P91, T11 etc..

  1. 46Mn7 alloy seamless pipe
    46Mn7 alloy seamless pipe 1334842075 -  Reply / Edit

    DIN 46Mn7 alloy seamless pipe,Usage: structure, casing and tubing for oil field, delivering liquid and gas, ordinary use and etc .

  1. A1045 PIPE
    A1045 PIPE 1331542644 -  Reply / Edit

    A1045 PIPE,A1045 Tube The inventory is sufficiency. API 5L and API 5CT certificates. ISO certificate.

  1. 3 1/2" API 5D Drill pipe
    3 1/2" API 5D Drill pipe 1339685387 -  Reply / Edit

    3 1/2" API 5D Drill pipe,1)3 1/2 S135 drill pipe for drlling 2)OD:2 3/8,2 7/8,3 1/2,4 1/2,5'' 3)Standared:API 5DP 4)Grade:E75,X95, G105, S135.

Latest Comments

  • p11 alloy steel pipe
    p11 alloy steel pipe

    Thebiggest advantage ofp11alloy steel pipeis that it can be 100% recycled. It conforms to the national strategy of environmental protection, energy saving and resource conservation. The national policy encourages the expansion of high press.

  • How long is the life of a spiral steel pipe ?
    How long is the life of a spiral steel pipe ?

    Spiral steel pipe itself has no life limit, and the service life is mainly related to the operating environment and production process. Spiral steel pipe operating environment is relatively poor In order to extend the service life, the oute.

Get in touch

Our company covers an area of 80, 000 m2 with a total assets of 90 million Yuan. There are 360 staff members including 80 technicians in our company. .

We also establish an effective complete quality control system. In 2003, our company obtained the certificate of ISO9001 Quality System Authentification!