Rubber and plastic gas hoses are the earliest hoses used for gas. In the earliest days when gas was used, rubber hoses were mainly used. The main component is rubber. There are generally three layers. The inner and outer layers are made of anti-corrosion rubber, and the middle is made of fiber braid. To increase the pressure-bearing capacity.
At present, many gas hoses are made of PVC, with different layers. The least has three layers. The inner and outer anti-corrosion PVC material uses a fiber braided layer in the middle, and some use a steel wire braided layer to increase the pressure-bearing capacity.
Advantages: low cost, good flexibility, simple connection and easy operation.
Disadvantages: Because its main material is either rubber or PVC, it will age, harden, crack, etc. during long-term use, which may easily cause gas leakage. And because its material is relatively soft and not resistant to wear, it may also cause rat bites. And the hoses of these two materials are not resistant to high temperatures, which is also a disadvantage.
2. Armored gas hose
The so-called armored gas hose is a kind of metal hose. It also has three layers. The innermost layer is generally a plastic hose, the middle layer is a metal winding pipe, and the outer layer is a flame-retardant and anti-corrosion PVC protective sleeve.
Advantages: not easy to wear, resistant to rat bites, not easy to bend, good flexibility.
Disadvantages: The pressure-bearing capacity of this kind of gas hose is average, and most of the joints are plastic joints, which are prone to aging.
3. Aluminum-plastic gas hose
Aluminum-plastic gas hose, its structure is generally three layers, the inside and the outside are made of polyethylene, and the middle is made of metal aluminum.
Advantages: strong pressure-bearing capacity, the whole root can be used for buried laying, anti-rat bite, not easy to age, and corrosion-resistant.
Disadvantages: poor flexibility, bending type requires pipe bender, otherwise it is easy to bend.
4. Stainless steel bellows
Stainless steel bellows is a gas hose that has emerged in recent years. Its main structure is two layers, stainless steel bellows and PVC outer protective layer.
Advantages: strong pressure bearing capacity, the whole root can be used for buried laying, anti-rat bite, not easy to age, corrosion resistance, and good plasticity.
Disadvantages: higher cost and poor flexibility.