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Do You Know the Classification of Anti-corrosive Steel Pipes?

Mar. 05, 2020

Custom stainless steel pipe supplier to share with you: Anti-corrosion steel pipe is a kind of steel pipe with good anti-corrosion performance, which has been widely used in construction. Anti-corrosion steel pipe has many differences because of its anti-corrosion coating and process. Different classifications are applicable to different industries of anticorrosive steel pipes. Today we will take a look at what types of anticorrosive steel pipes are.

Anti-corrosion steel pipe is divided into two categories: outer wall anti-corrosion steel pipe and inner wall anti-corrosion steel pipe

Outer wall anticorrosive classification:

1, 3PE anticorrosion

Pipe three-layer PE anticorrosion refers to the integration of the first layer of epoxy powder, the second layer of adhesive, and the third layer of polyethylene into one material, which is firmly combined with the steel pipe to form an excellent anticorrosive layer.

2, 2PE anticorrosive steel pipe

As the name suggests, 2PE anticorrosive steel pipe has only two layers, the first layer is adhesive and the second layer is polyethylene. These two are combined with steel pipes to form an anticorrosive layer.

3.Single PE anticorrosive steel pipe

Single-layer PE anti-corrosion steel pipe is a process steel pipe that uses a spray coating process to combine polyethylene with a heated steel pipe to form an anti-corrosion layer.

4. Epoxy coal tar anticorrosive steel pipe

Epoxy coal tar anticorrosion is an anticorrosive steel pipe formed by combining epoxy resin, coal tar asphalt, antirust pigments, additives, and modified amines.

5, coat anti-corrosion steel pipe

The outer anticorrosive steel pipe is made of high-density polyethylene material wrapped on the outer surface of the steel pipe, which has extremely high mechanical strength and excellent corrosion resistance.

Classification of inner wall anticorrosion

1. Liquid epoxy coating IPN8710 anticorrosive steel pipe

This kind of steel pipe is made of aliphatic polyurethane prepolymer and epoxy resin, high-quality pigments, additives, and solvents as the anticorrosive layer. This technology is specially used for the anticorrosion of food, drinking water and other equipment, water distribution pipelines and drinking water tank surfaces.

2, sintered epoxy powder anticorrosive steel pipe

Sintered epoxy powder is a solid material that is transported and dispersed by using air as a carrier. It can be applied to the surface of preheated steel products and melted, leveled, and solidified to form a uniform coating for corrosion protection.

Galvanized Steel Pipe

Galvanized Steel Pipe

How to heat preservation steel pipe?

There are many methods for heat preservation of anti-corrosion steel pipes, and different methods are selected according to different needs.

1.Stainless steel pipe insulation method

Use amorphous insulation materials (such as expanded perlite, expanded frog stone, asbestos stone powder, asbestos fiber, diatomite clinker, etc.), add binders (such as cement, water glass, refractory clay, etc.), or add coagulant (Sodium fluorosilicate or nepheline aminopyrine), choose a proportion of ingredients, add water and mix well to become a plastic mud ball, and apply it to insulation pipes and equipment by hand or with a tool. This method is called smear method. Insulation.

2. Anti-corrosion steel pipe insulation pipe wrapping insulation

① Wrapping type insulation is made of insulation material into a rope or band shape, which is directly wound on the pipe.

② Insulation materials using this method are: slag wool felt, glass wool felt, straw rope, asbestos rope or asbestos tape.

3.Prefabricated prefabricated insulation for anticorrosive steel pipe insulation pipe

① Prefabricated prefabricated insulation structure for pipes. Generally, when the pipe diameter DN ≤ 80mm, a semi-circular shell is used; if the pipe diameter DN ≥ 100mm, a fan-shaped tile (arc-shaped tile) or trapezoidal tile is used.

② The materials used in the pre-products are mainly foam concrete, asbestos, diatomaceous earth, slag wool, glass wool, rock wool, expanded perlite, expanded vermiculite, calcium silicate, etc.

4. Insulation of anti-corrosion steel pipe

① When the insulation material is bulk material, this method can be used for the insulation of detachable parts.

② During construction, a support ring made of round steel is fixed on the pipe wall. The thickness of the ring is the same as the thickness of the insulation layer, and then it is covered with iron, aluminum, or barbed wire outside the support ring and then filled with insulation material.

③ The filling method can also use rigid arc-shaped blocks prefabricated with porous materials as the supporting structure, with a distance of about 900mm. Can be covered on the support circumference for slag cotton filling. Filled insulation structure should use metal protective shell.