The raw materials for bellows mainly include the following:
Bronze and brass: These metal materials are often used to make bellows and have good conductivity and corrosion resistance.
Stainless steel, monel and inconel alloy: These alloy materials are also widely used in bellows and have excellent corrosion resistance and strength.
High-density polyethylene (HDPE): HDPE double-wall corrugated pipe is a new type of pipe with excellent ring stiffness and good strength and toughness, light weight, strong impact resistance, and not easy to break. It is often used in drainage and sewage projects.
Steel-reinforced spiral corrugated pipe: This type of corrugated pipe uses polyethylene as the main raw material, combined with high-strength steel belt reinforcement, and is often used in municipal road seepage and drainage.
PTFE composite materials: In recent years, some new materials such as PTFE composite materials have also begun to be used in bellows fittings, with excellent corrosion resistance and high temperature stability.