In order to improve the life of the pipeline, the manufacturer will process its surface after it is produced, which is also a step in production. The four most commonly used methods are cleaning, tool rust removal, pickling, and shot blasting.
Cleaning mainly removes grease, dust, lubricants and other substances attached to the surface of the spiral pipe. If the substances cannot be completed by cleaning, pickling will be chosen. There are two types of chemical and electrolytic cleaning, which have an anti-corrosion effect on the pipeline.
If there is rust on the surface of the pipe, the spiral pipe manufacturer uses tools to remove rust and uses a wire brush to clean and polish the surface. If there is particularly strong oxide scale attached to the surface of the steel pipe, it may not be able to clean it even with the help of tools, so you need to find other methods.
During the pickling process, strong acid solutions such as hydrochloric acid or sulfuric acid are usually used as corrosive agents. The steel pipe is soaked in the acid solution for a period of time to dissolve or peel off the dirt and oxides on the surface. Then it is rinsed and neutralized, and finally cleaned steel pipe surface.
Pickling can use different processes and equipment, including static immersion pickling, spray pickling and cyclic pickling. The specific choice depends on the size, material and surface treatment requirements of the steel pipe. The surface of the pickled steel pipe is usually smoother, more uniform, and has better adhesion, which is suitable for subsequent surface treatment processes such as coating, galvanizing, and phosphating. It also improves the corrosion resistance and aesthetics of the steel pipe. .
The last method to solve the problem of surface quality of spiral pipes is to use shot blasting to remove rust. A high-power motor drives the blades to rotate at high speed, so that abrasives such as steel sand, steel shots, iron wire segments, and minerals are sprayed on the surface of the steel pipe under the action of centrifugal force. Treatment can play a role in rust removal
