Understanding the specifications of civil, welding and anti-corrosive.
认识和理解土建、焊接、防腐的相关标准和规范。
2
Alloy steel, completely welded, oil-proof, waterproof and anti-corrosive gas and medium, suitable for all kinds of environments.
合金钢材料，全密封焊接，防油、防水、防一般腐蚀性气体及介质，可适用于各种环境。
3
The anti-corrosive mechanism, preparation procedure in lab, manufacture process, performance test and application fields of Zn-Cr coating technology are introduced.