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auto-darkening welding helmet
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zhejiang must industry co.,ltd.
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auto-darkening welding helmet
| Subject: | auto-darkening welding helmet |
| Update Date: | 2007-07-20 00:00:00.0 |
| Valid Period: |
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Description
Product Name: auto-darkening welding helmet
Model No.:SPARK-F
Place of Origin:Zhejiang
1).Shade Number In Light State：Din4#
2). Shade Number In Dark State：Din9-13#
3).Response Time：<0.3ms(room temperature)
4). Return Time：rapid-0.5s slow-1.5s
5). Power Supply：Two AAA alkaline ones (min welding hours：500)
6). Working Temperature：-5℃(23℉)to+55℃(131℉)
7).View Area：90x40mm
8). UV Transmittance：313nm≤0.00006% 365nm≤0.000076%
9).IR Transmittance：780～1300nm≤0.003% 1300～2000nm≤0.009%
10).Weight：530g
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