东北50岁熟女叫床有谁没谁了,被多个强壮的黑人灌满精,野花免费观看 ,久久国产精品只做精品,亚洲女精品一区二区三区,日韩一区二区三区在线,日韩欧美国产视频

Scan code consultation:
0755-2102 2109
Service
Current location: Home Service Corrosion protection
How to apply for anti-corrosion grade WF2?

SINO Testing Services

| 2019-12-13|Return

Corrosion prevention is the use of various methods to protect metal objects that are prone to rusting, in order to extend their service life. Generally, physical corrosion prevention, chemical corrosion prevention, electrochemical corrosion prevention, and other methods are used.

Lighting fixtures, motors, electric motors, distribution boxes, etc. all have certain requirements for corrosion resistance and must meet a certain level of corrosion resistance.

So, how is the anti-corrosion level classified? How to apply for anti-corrosion grade WF2?

The anti-corrosion level is classified into the following five levels according to indoor and outdoor:
image.png
For example, the anti-corrosion level WF2 of the lamp indicates that the lamp is suitable for outdoor strong corrosive environmental conditions.

Required documents for applying for WF2 anti-corrosion grade:

(1) Assembly drawing (including the material of the shell and exposed fasteners),

(2) Nameplate diagram,

(3) Surface coating material report,

(4) Coating process documents for coatings,

(5) Other materials,

(6) Sample.
Service Hotline: 18924609560 (same WeChat account)


Related Recommendations
Contact us
0755-2102 2109
Add: 13F, Building C, Kangjia Guangming Technology Center, No. 288 Xingxin Road, Guangming District, Shenzhen
Follow us
Copyright: Shenzhen Zhongnuo Testing Technology Co., Ltd. 粵ICP備18004888號(hào)
Service Hotline
18924609560
點(diǎn)擊這里給我發(fā)消息 1354407946
點(diǎn)擊這里給我發(fā)消息 1354407946