Standard No.:	GB/T 3609.2-2009
English Name:	Occupational eye and face protection - Welding protection - Part 2: Automatic welding filter
Chinese Name:	职业眼面部防护 焊接防护 第2部分：自动变光焊接滤光镜
Chinese Classification:	F79    Safety appliance and equipment
Professional Classification:	GB    National Standard
ICS Classification:	13.340.10 13.340.10    Protective clothing 13.340.10
Issued by:	AQSIQ, SAC
Issued on:	2009-04-01
Implemented on:	2009-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	170.0
Delivery:	via email in 1 business day

This part of GB/T 3609 specifies the structure, optical property, non-optical property, test method, inspection rules, packing, marking, storage and transport for the automatic welding filter. This part is applicable to the automatic welding filter on the welder's face shield to protect eyes against the harmful strong light, ultraviolet and infrared radiation.

Foreword I 1 Scope 1 2 Normative References 1 3 Terms and Definitions 1 4 Structure 4 5 Technical Requirements 4 6 Test Methods 9 7 Packing, Marking, Storage and Transport 13 Appendix A (Normative) Calculation of Shade Number 14 Appendix B (Informative) Shade Number Selection at Different Operating Environment 17 Appendix C (Informative) Measuring Device for Reduced Luminance Coefficient of Diffused Light 21 Bibliography 23

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