Composite material compressed natural gas cylinder groups perform better than steel cylinder groups in cold regions. The main reasons are that the composite material cylinder groups have good toughness, no corrosion risk, and a low linear expansion coefficient. In cold environments, metals tend to become brittle, and under high pressure, there is a risk of structural damage to steel cylinders. However, the composite material maintains elasticity, safely stores gas, and has a long service life.

The reason why composite cylinders outperform steel cylinders in low-temperature environments is mainly because:

Suitable for low temperatures: Due to the inherent properties of steel, when the environmental temperature drops below -40℃, the risk of cracking and shattering significantly increases. However, the compliant material can perfectly avoid this risk and maintain its strength and toughness even at extremely low temperatures.

Zero corrosion risk: In cold and humid environments, steel is highly prone to rust and corrosion due to condensation water, road salt, or moisture. Over time, this can cause the wall thickness to thin and reduce safety. However, composite materials do not corrode or rust at all.

Stable thermal expansion characteristics: Metals undergo significant expansion and contraction with changes in temperature.Composites feature a low coefficient of thermal expansion, meaning the cylinder body and its internal volume remain incredibly stable even as external weather shifts rapidly.

Enhanced Safety and Non-Fragmenting Design: In the rare event of a catastrophic failure, steel tanks are prone to rupturing and shattering into dangerous, shrapnel-like shards. Composite cylinders are designed to leak safely without fragmenting.

Lightweight advantage: Composite gas cylinders are typically 50% to 70% lighter than steel gas cylinders. This significantly improves the fuel efficiency of CNG vehicles , and also makes the cylinder sets more suitable for cold and icy environments, making them easier to install and operate.

If you need CNG Cylinder Groups products, you can contact Nan Gong Zhuoyue Gas Equipment. We can provide you with professional customized solutions.