Say goodbye to rubber hoses! How can stainless steel bellows eliminate the risk of gas leakage?- Zhejiang Zhenlong Energy Equipment Technology Co.,LTD

1. Hidden dangers of rubber hoses: Why must they be eliminated?

Traditional rubber hoses have the following fatal defects:

Easy to age: They will harden, crack and lose their sealing properties in about 2 years.
Not resistant to high temperatures: They are easily deformed by long-term heat, increasing the risk of leakage.
Afraid of rat bites: Rubber materials are easily bitten by rats, causing gas leakage.
Unstable connection: The clamp is not firmly fixed and is easy to loosen and fall off.

2. Four major safety advantages of stainless steel bellows

① Super corrosion resistance, lifespan of up to 8-10 years

Using 304/316 stainless steel, it is corrosion-resistant and oxidation-resistant, and is not affected by kitchen fumes and humid environments. Its service life far exceeds that of rubber hoses (national regulations require that gas connection pipes be used for no less than 8 years).

② Explosion-proof and pressure-resistant, high and low temperature resistant

Temperature range: -20℃ to 150℃, suitable for various extreme environments.

Strong pressure resistance: can withstand pressure above 0.4MPa, which is much higher than the household gas standard (0.01-0.1MPa).

③ Anti-rat bite and anti-fall design

Metal braided layer: cannot be bitten by rats, eliminating the risk of animal damage.

Threaded interface: metal nut + sealing gasket is used, which is more firmly fixed than the clamp of rubber tube.

④ Flexible and bendable, easy to install

Stainless steel bellows have a certain flexibility and can adapt to different installation angles to avoid stress problems caused by hard pipe connection.

3. How to correctly purchase and install stainless steel bellows?

Purchase points

Recognize the national standard: choose products that meet the GB/T 26002-2020 standard.

Material selection: 304 stainless steel (sufficient for home use) or 316 stainless steel (more corrosion resistant).

Suitable length: not too long (generally not more than 2 meters) to avoid bending and affecting airflow.

Installation precautions

Must be installed by professional gas company personnel and cannot be operated by yourself.

Check the sealing: After installation, use soapy water to check whether the interface is leaking.

Regular inspection: Check the pipeline status every 1-2 years to ensure that there is no deformation or rust.

4.Rubber hose vs. stainless steel bellows: Gas connection pipe comparison chart

Comparison items	Rubber hose	Stainless steel bellows
Material and structure	Ordinary rubber material, single-layer structure	304/316 stainless steel + PVC protective layer, three-layer composite structure
Service life	18 months (need to be replaced every year)	8-10 years (in line with the requirements of national standard GB55009-2021)
High temperature resistance	Easy to soften and catch fire (not resistant to high temperature)	Temperature resistance -20℃~150℃, flame roasting only affects the outer layer of PVC
Aging resistance	Easy to become brittle, cracked, and hardened	No aging problem, strong stability of metal material
Anti-rat bite ability	Easy to be bitten and damaged	The metal layer cannot be bitten through
Connection method	Clamp fixed, easy to fall off	Threaded thread connection, can withstand adult pulling