The main methods for rust removal and scale removal of iron guardrail include manual treatment, mechanical treatment, spray treatment, chemical treatment (pickling), electrochemical treatment and flame treatment

1、機械處理更常用的有風（電）動刷,除銹槍,拋光砂輪及風（電）鏟等工具,借助機械力的高頻沖擊與磨擦的作用除銹和清除氧化皮舊漆等污物.

1. The most commonly used tools for mechanical treatment are wind (electric) brush, derusting gun, polishing grinding wheel and wind (electric) shovel. With the help of high-frequency impact and friction of mechanical force, rust and dirt such as oxide skin and old paint are removed

2、手工處理主要使用砂布,刮刀,錘鑿、鋼絲刷、廢砂輪等工具,靠手工打磨敲鏟、掃刷來除去銹垢、氧化皮及焊渣,塵土等鐵藝護欄表面污物.

2. Manual treatment mainly uses abrasive cloth, scraper, hammer chisel, steel wire brush, waste grinding wheel and other tools to remove rust, scale, welding slag, dust and other dirt on the surface of iron guardrail by manual grinding, chipping and brushing

3、化學處理是利用特殊配方的酸性溶液來浸、溶鐵藝制品,通過化學反應來除凈氧化皮、銹痕、油污,即所謂的“酸洗”.

3. Chemical treatment is to use specially formulated acidic solution to dip and dissolve iron products, and remove oxide scale, rust mark and oil stain through chemical reaction, that is, the so-called "pickling"

4、噴射處理是利用機械離心、壓縮空氣、高壓水流等為動力,將磨料、砂石、鋼丸拋射到鐵藝護欄的表面,沖擊和磨擦掉氧化皮、銹痕、舊漆、型砂等。

4. Spraying treatment is to use mechanical centrifugation, compressed air and high-pressure water flow as power to shoot abrasive, sand and steel shot onto the surface of iron guardrail, impact and rub off oxide scale, rust mark, old paint, molding sand, etc.