May 11, 2017
in Blog

Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electro-chemical corrosion reaction of steel pipe.

IPN8710 corrosion

When the corrosion of steel in more types of media, such as acids, alkalis, salts, oxidants and water vapor, etc., the coating must be chemically inert, acid salt corrosion, the coating should be compact structure, water permeability, adhesion, tough fullness. Such cases for IPN8710 corrosion.
IPN8710 anti-corrosion primer: from polyurethane, polyethylene, modified epoxy resin, non-toxic anti-corrosion pigments, additives and other components, room temperature curing to form interpenetrating networks, dense coating structure, acid, alkali, salt, rust performance, strong adhesion for water supply pipeline wall corrosion primer paint. IPN8710 anti-corrosion finish: from the epoxy, rubber, resin-modified, non-toxic anti-corrosion pigments, additives and other components. Excellent chemical resistance, non-toxic, anti-microbial corrosion, corrosion protection for water supply pipeline wall finish.

FBE epoxy powder corrosion

FBE epoxy powder anti-corrosion structure: electrostatic spraying the surface of the steel epoxy powder coating, a film. The coating has a coating operation is simple, clean, coating impact resistance and bending properties, temperature resistance advantages.

2PE/3PE corrosion

2PE/3PE corrosion structure: the surface of the steel and epoxy powder electrostatic spraying adhesive side wound, lateral wound polyethylene coating, combined with the excellent performance of the three, thus significantly improving the overall quality of pipeline corrosion. Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

Coal tar epoxy anticorrosive

Coal tar epoxy anticorrosive structure: from the epoxy resin + filler made of coal tar pitch + anti-corrosion coatings on steel surface coated with glass cloth to strengthen the formation of a coating, commonly used in the pipe wall corrosion. Thickness of 0.5 ~ 1.0mm.

High-density polyethylene jacket corrosion

High density polyethylene jacket corrosion structure: the outer surface of pipe wrapped in high-density polyethylene material, with a high mechanical strength and excellent corrosion resistance, can protect the steel in the transportation, installation and use of the process to avoid external factors the damage.
Manufacture of stent should be added antioxidants, UV stabilizers and carbon black, etc. Polyethylene jacket tube easy to aging, such as open storage tarpaulin and other items appropriate to cover, dumps should stay away from high heat and fire, anti-corrosion steel pipe made after the ban exposure, sudden cold, or polyethylene jacket tube easy to crack, the impact product performance and service life.

Processing standard:

1.The petroleum natural gas uses three polyethylene (3PE) Steel pipe anticorrosion
Standard: SY/T0413-2002\DIN30670-1999
2. fluming water, oil, gas Medium and so on use two, three polypropylene (PP) anticorrosion
Standard: DEP 31.40.30.31
3. The petroleum natural gas uses FBE(Single-layer nodulizing epoxy powder anticorrosion) 2FBE(Double-decked nodulizing epoxy powder anticorrosion)
Standard: SY/T0315-2005;Q/CNPC38—2002
4. In the liquid epoxy coating guards against corrosion the steel pipe to be suitable for transportation crude oil, water, natural gas medium and so on
Standard: SY/T0457—2000
5. 8701 tap water antiseptic paint mainly uses in drinking the water conduct, the vessel, its hygienic target achieves tap water Q/12TG3663-2006
6. Epoxy coal tar winding glass cloth steel pipe anticorrosion
Standard: SY/T0447-96

Steel surface treatment is mainly anti rust, the following is anti rust process:
First step is to clean, use cleaning solvent emulsion cleaning the steel surface, in order to achieve the removal of oil, grease, dust, lubricants and similar organic matter, but it can not remove the steel surface rust, oxide, solder medicine.
Second step is to right tools rust, rust tools you want to have to use a wire brush, wire brush to remove loose or warped oxide, rust and slag. To achieve the desired effect of the rust, the hardness of the steel surface must be based on the original extent of corrosion and the required surface roughness, coating, etc. to select the type of abrasive, the epoxy layer, two or three layers polyethylene coating, using mixed abrasive grit and steel shot blasting easier to achieve the desired effect.
Third is to do pickling, chemical and electrolytic pickling generally use two methods, using only chemical pickling pipeline corrosion. Although chemical cleaning can achieve a certain surface cleanliness and roughness, but there are some pollution to the environment.
Finally emphasis on the importance of surface treatment in the production, strictly control the process parameters when anti rust.