A comparison of various coating steel pipe production process

A comparison of various coating steel pipe production process, 

process1: as the curtain coating method, coating sagging. And due to the unreasonable roller table and the chain design, coating exist more than two longitudinal and annular bruises. This process is to be eliminated. It is the only saving grace is the heating drying after coating. -

 process 2: coating sag, perfect spiral scratches and the quality defects of the white. Especially severe is spiral raw coating thickness is only about one 5 of the specified thickness, and the look and feel is very poor. At the same time, the process of electrostatic spark a fire hazard, in recent years there have been several fire accidents, pose a threat to safety production. Without drying process is the process of important defects. Because of this process there are many difficult to overcome and restraining each other, the contradiction between the increasingly archaic, already can not adapt to the requirements of modern factory automatic coating, will gradually withdraw from steel pipe coating.

- process 3: is a kind of advanced technology, but not very mature technology. In between the two rollers between transient complete coating and curing, its advantages are obvious. But there are difficult to overcome weaknesses, such as: pretreatment on the surface of the steel tube is very strict, not taken, adhesion obviously decreased; UV coating and expensive equipment, high technology management requirements; Process of brittle coating, such as knock against, local fall off easily, and difficult to fill. Because there are so many problems that constrained in the promotion of the process. Four: - process is a kind of relatively advanced technology developed in recent years and the work of relatively mature art. It overcome other coating process is severely sag, bruises, efflorescence, fragile and other ills. Its produce coating adhesion, flexibility, rust prevention effect is good, very few sagging, beautiful and full. The process has simple operation, complete equipments, low technical management requirements and the characteristics of safety. Due to technical perfect called "steel pipe heating airless spraying technology".

We always do coating on the carbon steel pipe to protect.