West Germany proof Electric Group Co., Ltd. mainly sold to the cities are: Shanxi, Hebei, Henan, Hubei, Hunan, Jiangxi, Sichuan, Guangdong, Guangxi, Hong Kong, Jilin, Heilongjiang, Liaoning, Ningxia, Gansu, Shandong, Fujian, Hainan and other places. Over the years we have with good quality and reputation, has hundreds of clients to establish long-term cooperative relationship. Shaanxi BNG series rubber dust-proof flexible connecting pipe factory wholesale Gede West proof flexible connecting pipe Scope 1 and Zone 2 dangerous places. 2, IIA, IIB, IIC explosive atmosphere. Proof flexible connection pipe Product Features 1, with fire, corrosion-resistant, water-resistant, anti-aging, good flexibility, firm structure, reliable work. 2, flexible tube length, thread size according to user needs special processing such as NPT, metric thread and so on. 3, in line with GB3836-2000, IEC60079 standards. Note: BNG series rubber dust-proof flexible connecting pipe at both ends of the thread when the purchases, please indicate the form of thread form, there are three: A, within the ends of the thread. B, one end of the external thread. C, both ends of the external thread.