- 同时供给两条线
- 工业用：焊接或气割、输氧或乙炔气体
- 产业用：生产线的空气、化学气体的输送
-适用温度：-40度---+90度
-  For civil, construction, architecture
- 2Line duplex use

- Manufacturing use
- Industrial use

- 双管一体，在使用中不脱离
- 用于高压，没有破裂的危险
- 耐化学剂，抗老化，即使用很长时间也不会硬化或老化
- 具有**的耐寒性，适用于冬季
- 重量很轻，便于使用或搬运

-  No separation easily due to it's two hoses in one united body
- No explosion due to it's for high pressure use
- Good durability against chemistry and climate
- No hardening in spite of long-term use
- Easy use for winter season with good cold proof
- Light and easy to carry