



分類項目
類別
代號
特征及用途
鋅層種類
純鋅鍍層
Z
防銹、防腐蝕
鋅鐵合金鍍層
ZF
鍍 層重量表示方法
等厚鍍層
A/B
A=B(克/平方米)
差厚鍍層
A不等于B(克/平方米)
表面結(jié)構(gòu)
純鍍鋅層(Z)
小鋅花 X
鋅層在自然條件下凝固,有肉眼可見的小鋅花結(jié)構(gòu),該表面一般進行光整處理
零鋅花 M
鋅層在自然條件下凝固,有肉眼不可見的小鋅花結(jié)構(gòu),該表面一般進行光整處理。
鋅鐵合金鍍層(ZF)
鋅鐵合金 R
通過對純鋅鍍層熱處理后得到的表面結(jié)構(gòu),該表面結(jié)構(gòu)通?;疑珶o光。
表面處理
鉻酸鈍化
C
減少運輸和存儲期間產(chǎn)生白銹
鉻酸鈍化+涂油
CO
進一步減少運輸和存儲期間產(chǎn)生白銹
無鉻鈍化
C5
對鈍化膜中有害人頭健康的六價鉻進行限制
無鉻鈍化+涂油
CO5
無鉻耐指紋
N5
減少運輸和存儲期間產(chǎn)生白銹,提高電子、電器產(chǎn)品表面耐汗?jié)n玷污性,對鈍化膜中有害人頭健康的六價鉻進行限制。
自潤滑
SL
減少運輸和存儲期間產(chǎn)生白銹,同時自潤滑膜可以很好的改善鋼板的成型性能。
涂油
O
不處理
U
易生銹,客戶選購時要慎重考慮。
鍍鋅重量(Z)
等厚
40/40、50/50、70/70、100/100、125/125、140/140、175/175、225/225
差厚
50/100 、70/140
鋅貼合金(ZF)
30/30、45/45、50/50、60/60
備注
經(jīng)供需雙方協(xié)商,等厚鍍層鍍層代號可以用雙面之和表示,如Z275,ZF90

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