Spiral steel pipe (SSAW pipe) is a welded steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. Spiral steel pipe is mainly used in water supply engineering, octg pipe, chemical industry, electric power industry, agricultural irrigation, urban construction
Spiral steel pipe cleaning method
1. Clean up:
Use solvents and emulsions to clean the surface of large-diameter spiral steel pipes to remove dust, cleaners and similar organic compounds. But it has to remove rust, scale, welding powder, etc. on the surface of steel in time, so it is only used as an auxiliary means in anti-corrosion production.
2. Derusting:
First of all, clean the steel surface with cleaning materials, which can remove impurities such as loose rust. Derusting with hand-opened special tools can achieve Sa2 level, and derusting power items can achieve Sa3 level. If the steel surface is attached with a strong oxide scale, the derusting result is not ideal, and the anchor pattern height of the anti-corrosion construction standard cannot be reached.
3. Acid treatment:
Chemical and electrolytic methods can be used to clean large-diameter spiral steel pipes. Only chemical treatment is used for pipes, which can remove scale, rust, and old coatings. Sometimes it can be used as reprocessing after sandblasting and rust removal. Although chemical cleaning can make the surface clean and rough to a certain extent, its anchor pattern is shallow and it is easy to pollute the environment.
Precautions for cleaning
1. The cleaning agent should not contain granular abrasives to prevent the hairline from being scratched or the surface damaged.
2. When cleaning, scrub in order according to the direction of the hairline.
3. After cleaning and washing with detergent, rinse with sufficient water and dry with a dry cloth after rinsing.
Spiral steel pipe cleaning method
1. Clean up:
Use solvents and emulsions to clean the surface of large-diameter spiral steel pipes to remove dust, cleaners and similar organic compounds. But it has to remove rust, scale, welding powder, etc. on the surface of steel in time, so it is only used as an auxiliary means in anti-corrosion production.
2. Derusting:
First of all, clean the steel surface with cleaning materials, which can remove impurities such as loose rust. Derusting with hand-opened special tools can achieve Sa2 level, and derusting power items can achieve Sa3 level. If the steel surface is attached with a strong oxide scale, the derusting result is not ideal, and the anchor pattern height of the anti-corrosion construction standard cannot be reached.
3. Acid treatment:
Chemical and electrolytic methods can be used to clean large-diameter spiral steel pipes. Only chemical treatment is used for pipes, which can remove scale, rust, and old coatings. Sometimes it can be used as reprocessing after sandblasting and rust removal. Although chemical cleaning can make the surface clean and rough to a certain extent, its anchor pattern is shallow and it is easy to pollute the environment.
Precautions for cleaning
1. The cleaning agent should not contain granular abrasives to prevent the hairline from being scratched or the surface damaged.
2. When cleaning, scrub in order according to the direction of the hairline.
3. After cleaning and washing with detergent, rinse with sufficient water and dry with a dry cloth after rinsing.
