Surface cleaning is critically important for pipe coating, and shot (impeller) blasting is the most suitable derusting method for most kinds of coating materials.

钢管的表面处理是决定覆盖层质量的关键因素，对大多数覆盖层而言，喷(抛)丸除锈法是最理想的除锈方式。

youdao

Must do derusting and to oxidation film processing, generally use chemical polishing or electrolytic polishing.

必须先做除锈及去氧化膜处理，一般使用化学抛光或电解抛光。

youdao

Through people's long-time study, a way of no pollution is found for derusting-super high pressure jet derusting.

通过人们长期的努力摸索、研究，找到了一种无污染的除锈方法——超高压水射流除锈。

youdao