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一、简介One, introduction1.适用于爆炸性气体环境1区、2区;1 suitable for explosive gas environment 2 zone, 1 zone 2.适用于IIA、IIB、IIC级爆炸性气体环境;2 applies to IIA, IIB, IIC explosive gas environment 3.适用于石油采炼、储存、化工、医药、军工及军事设施等爆炸性气体环境;3 applicable to the petroleum production and refining, storage, chemical, pharmaceutical, military and military facilities in explosive gas environment 4.多规格、多型式可供选择。4 multi standard, multi types can be selected.二、产品特点Two, product features1.采用优质碳素钢或不锈钢制成;1 used high quality carbon steel or stainless steel 2.螺纹规格可根据用户要求特制,如NPT螺纹,英制及公制等各种非标螺纹;The 2 thread specification can be customized according to user requirements, such as the NPT thread, inch and metric and other kinds of non-standard thread 三、技术参数Three, the technical parameters1.执行标准:GB 3836.1、GB3836.2、IEC60079-0、IEC60079-1;1 standards: GB 3836.1, GB3836.2, IEC60079-0, IEC60079-1 2.防爆标志:Exd II2 explosion-proof symbol: Exd II四、订货须知Four, ordering instructions1.正标产品的两端螺纹形式为管螺纹,且为同一规格;1 are standard threads on both ends of the form product for pipe thread, and for the same specifications 2.可根据用户要求定制公制螺纹,NPT螺纹及其他螺纹形式。2 can be customized according to user requirements NPT thread, metric thread, and other threads form.