Anti-corrosion steel pipe generally refers to the special process of anti-corrosion treatment of ordinary steel pipes, so that the steel pipes have a certain anti-corrosion ability. Generally used for waterproof, anti-rust, acid-base, oxidation and other characteristics. The following is an introduction to the outer anti-corrosion process of steel pipes.
1.3PE anti-corrosion
The base material of 3pe anti-corrosion steel pipe includes seamless pipe, spiral steel pipe(SSAW pipe) and straight seam steel pipe(LSAW pipe). The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor resistance and mechanical properties. The anti-corrosion layer of 3PE anti-corrosion steel pipe is very important to the life of buried pipelines. Some pipelines of the same material will not corrode after being buried underground for decades, and some will leak within a few years. It is because they use different outer anti-corrosion layers.
2. Epoxy powder
Epoxy powder is a kind of thermosetting, non-toxic coating. After curing, it forms a high molecular weight cross-linked structure coating. It has excellent chemical anti-corrosion performance and high mechanical performance, especially the best wear resistance and adhesion. The coating is 100% solid, solvent-free and pollution-free, and the powder utilization rate can reach more than 95%. It is a high-quality anti-corrosion coating for buried steel pipelines.
The three-layer PE process formed by epoxy powder coating primer polyethylene PE and adhesive winding or coating is currently the most commonly used anti-corrosion process for steel pipelines.
3. Epoxy coal tar pitch
Commonly known as water tar, it has excellent properties such as electrical insulation, water permeability resistance, microbial erosion resistance, stray current resistance, heat resistance, and sudden temperature change resistance. The coating can be used between -4 and 150 °C. It is mainly used for anticorrosion of the outer wall of buried or underwater oil, gas, water, and heat pipelines. It is also suitable for anti-corrosion of all kinds of steel structures, docks, ships, sluices, gas storage tanks, oil refinery and chemical plant equipment, sewage pools, roof waterproof layers, and basement concrete layers.
4. Epoxy coal tar pitch cold wrap tape
It is suitable for anti-corrosion of the outer wall of buried and underwater steel oil, natural gas, tap water and heating pipelines. It is also suitable for waterproofing and anti-seepage of concrete structures such as the bottom of steel storage tanks, sewage pools, roof waterproofing layers, toilets, bathrooms, and basements.
5. Epoxy paint
It is characterized by strong adhesion, excellent chemical resistance, corrosion resistance, water resistance, thermal stability and electrical insulation, and is widely used in construction, chemical industry, automobiles, ships, electrical insulation, etc. The paint will lose its gloss and chalk after being exposed to the sun outdoors, so it is suitable for use as a primer.
6. Plastic coating for anti-corrosion
Plastic-coated steel pipe, also known as plastic-coated pipe, steel-plastic composite pipe, and plastic-coated composite steel pipe. It is a steel-plastic composite steel pipe with a steel pipe as the substrate, and a plastic anti-corrosion layer is welded on the inner surface of the steel pipe (bottom pipe) or a plastic anti-corrosion layer is welded on the inner and outer surfaces by spraying, rolling, dipping, and suction processes.
Plastic-coated steel pipe has excellent corrosion resistance and relatively small frictional resistance. Epoxy resin coated steel pipe is suitable for the transportation of water supply and drainage, sea water, warm water, oil, gas and other media, and PVC coated steel pipe is suitable for the transportation of drainage, sea water, oil, gas and other media.
1.3PE anti-corrosion
The base material of 3pe anti-corrosion steel pipe includes seamless pipe, spiral steel pipe(SSAW pipe) and straight seam steel pipe(LSAW pipe). The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor resistance and mechanical properties. The anti-corrosion layer of 3PE anti-corrosion steel pipe is very important to the life of buried pipelines. Some pipelines of the same material will not corrode after being buried underground for decades, and some will leak within a few years. It is because they use different outer anti-corrosion layers.
2. Epoxy powder
Epoxy powder is a kind of thermosetting, non-toxic coating. After curing, it forms a high molecular weight cross-linked structure coating. It has excellent chemical anti-corrosion performance and high mechanical performance, especially the best wear resistance and adhesion. The coating is 100% solid, solvent-free and pollution-free, and the powder utilization rate can reach more than 95%. It is a high-quality anti-corrosion coating for buried steel pipelines.
The three-layer PE process formed by epoxy powder coating primer polyethylene PE and adhesive winding or coating is currently the most commonly used anti-corrosion process for steel pipelines.
3. Epoxy coal tar pitch
Commonly known as water tar, it has excellent properties such as electrical insulation, water permeability resistance, microbial erosion resistance, stray current resistance, heat resistance, and sudden temperature change resistance. The coating can be used between -4 and 150 °C. It is mainly used for anticorrosion of the outer wall of buried or underwater oil, gas, water, and heat pipelines. It is also suitable for anti-corrosion of all kinds of steel structures, docks, ships, sluices, gas storage tanks, oil refinery and chemical plant equipment, sewage pools, roof waterproof layers, and basement concrete layers.
4. Epoxy coal tar pitch cold wrap tape
It is suitable for anti-corrosion of the outer wall of buried and underwater steel oil, natural gas, tap water and heating pipelines. It is also suitable for waterproofing and anti-seepage of concrete structures such as the bottom of steel storage tanks, sewage pools, roof waterproofing layers, toilets, bathrooms, and basements.
5. Epoxy paint
It is characterized by strong adhesion, excellent chemical resistance, corrosion resistance, water resistance, thermal stability and electrical insulation, and is widely used in construction, chemical industry, automobiles, ships, electrical insulation, etc. The paint will lose its gloss and chalk after being exposed to the sun outdoors, so it is suitable for use as a primer.
6. Plastic coating for anti-corrosion
Plastic-coated steel pipe, also known as plastic-coated pipe, steel-plastic composite pipe, and plastic-coated composite steel pipe. It is a steel-plastic composite steel pipe with a steel pipe as the substrate, and a plastic anti-corrosion layer is welded on the inner surface of the steel pipe (bottom pipe) or a plastic anti-corrosion layer is welded on the inner and outer surfaces by spraying, rolling, dipping, and suction processes.
Plastic-coated steel pipe has excellent corrosion resistance and relatively small frictional resistance. Epoxy resin coated steel pipe is suitable for the transportation of water supply and drainage, sea water, warm water, oil, gas and other media, and PVC coated steel pipe is suitable for the transportation of drainage, sea water, oil, gas and other media.
