Features: 1? Flexibility is good , corrosion-resistant, have long performance life, use safer, because connection of end adopt metal taper to seal,End technology with Expand the side. Able to bear high low-temperature, it is convenient to install, so long as the whorl being screwed on that it can be sealed. Export to Canada and USA. 2?Is it use in gas , liquefied gas , natural gas , oil , water etc. 3?Corrugation hose material select SUS304 , SUS316 or SUS316L, material of both ends selects copper. 4?150mm--2000mm, Or product according to customers request.