WebGBstandards.org provide GB/T 3609.1-2008 standard english PDF version,Qccupational eye and face protection - Welding protection - Part 1: Welding protector China National … WebThe utility model relates to a pair of infrared fully automatic liquid crystal goggles, comprising a liquid crystal sheet and a control circuit. A double-prevention sheet which can prevent infrared and ultraviolet light is added to the liquid crystal sheet. A sensor of the control circuit is an infrared sensitive element. The sensor is used for triggering the liquid crystal sheet …
GB/T 3609.1-1994 English Version, GB/T 3609.1-1994 Equipment …
Web二、技术性能焊接防护眼镜技术性能要求应符合GB3609,1一83的规定。l、规格尺寸镜架圆镜框直径不小于50mm。滤光片长宽为50mmx108mm,误差(0.8mm,厚度2mm一3.8mm。保护片长宽要求与滤光片相同,厚度为不小于2mm。 extension of peninsular plateau
How to protect the welder ? -C&G Safety
WebCN2108536U CN 91232458 CN91232458U CN2108536U CN 2108536 U CN2108536 U CN 2108536U CN 91232458 CN91232458 CN 91232458 CN 91232458 U CN91232458 U CN 91232458U CN 2108536 U CN2108536 U CN 2108536U Authority CN China Prior art keywords light welding control circuit mask automatic welding Prior art date 1991-12-16 … WebGB 3609.1-1983 English Version - GB 3609.1-1983 Welding goggles and mask (English Version): GB 3609.1-1983, GB/T 3609.1-1983, GBT 3609.1-1983, GB3609.1-1983, GB 3609. ... Web提供焊接护目镜面罩国家标准 gb 3609.1-83文档免费下载,摘要:焊接护目镜面罩中华人民共和国国家标准gb3609.1-83国家标准局1983年月日发布,1984年月日实施本标准适用我 … buck clayton bio