Metal Hose http://www.zlongjx.com/844.htm 
 China has issued a national standard in 1993, "corrugated metal hose general technical conditions" (GB/T14525-93). Metal hose is an important engineering components connected by corrugated flexible tube, a combination of network units and connectors. In a variety of gas, fluid piping systems and length, temperature, position and angle compensation system as compensation components, sealing components, connectors, components and damping elements used in aerospace, petrochemical, mining, electronic, mechanical shipbuilding, medical Health, textile electronics, energy and construction fields. 
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