锆化表面处理工序可以清除钢板表面的油污和杂质。●引进了改善水质的RO设备。●钢桶的外面和内面都经过磷酸铁表面化学处理。
磷酸铁化学处理促使钢桶内的清洁度大幅提高，对提高钢桶外面和内面涂膜的附着力以及耐绣性都有很大的帮助。
Surface treatment facilities ensure the cleanliness of the steel drums. ●RO equipments were installed to improve the quality of water. ●Both internal and external surfaces of the drums are iron-phosphating treated.
The cleanliness of the internal surface of the drum is enhanced, as well as the adhesion and durability of the external surface.
RTO废弃处理系统：系统预防和控制污染，节约自然资源，提高能源利用，减少废气处置，持续改进环境绩效。
RTO waste disposal system: The system prevents and controls pollution, saves natural resources, improves energy use, reduces waste gas disposal, and continuously improves environmental per formance.

3重7层卷边工艺使天地板和桶身充分地结为一体，卷边部具有较高的耐冲击性，大大的规避了万一从高处跌落时钢桶泄露的风险。
Triple-seaming: Top, bottom, and body of a drum are integrated strongly by a triple- seam-er. The triple-seaming makes it possible that edges of top, bottom and body of a drum arerolled in perfect seven layers, which greatly increases resistance against external shock. As aconsequence, the triple-seaming effectively avoids the risk of breakage should drums drop fffrom high positions.

氦气测漏原理：将注有氦气的密封钢桶放入真空罩内，即可检测出渗漏氦气的钢桶。
氦气测漏的优点：●可以检测出大于30微米的针孔 ●氦气和钢桶内的内容物不发生化学反应 ●检测时对钢桶没有任何损伤
Mechanism of Helium leaktester: A drum flled with helium gas will be placed inside of a vacuumcham-ber and detected by the leak-sensor if helium gas leaking fromthe drum
Advantages of Helium leaktester: ●The helium leaktester is able to detect and fnd leak of 30μmo ●No chemical reaction effects contents in the drums ●A total inspection can be caried out without amages to inspected drums

UN是联合国海事组织制定的国际海运危险货物规则：用于出口危险货物包装，需要使用带UN钢印的钢桶。只有冲轧了UN钢印的钢桶才被允许用于危险物品出口。统仕实业的UN认证钢桶通过了以下试验。
UN certificate is recommended by United Nation for marine transportation of dangerous articles. Marine transportation of dangerous articles insteel drums require UN marked containers. In China,only UN certifcated drums are permittedto fill and transport dangerous articles if viaocean. UN certifcated drums manufactured by Tongshi industry passed two tests asfollows.