High-quality and low-cost bridge plastic bellows hotline in Jiande City, Zhejiang Province 15933187015

内径：

50mm

The advantages are as follows: Corrosion resistance
Because it does not corrode, is not afraid of acid, salt and alkali, it can effectively protect the prestressed tendons from corrosion and improve the anti-corrosion protection of the prestressed tendons.
Durable anti-corrosion ability. Metal pipes have no permanent anti-corrosion ability and cannot resist water leakage, thus losing their barrier protection function. Plastic corrugated pipes can prevent harmful substances from penetrating the pipeline and contaminating it to ensure the post-tensioned prestressed structure. of persistence.
Insulation
Metal is a good conductor of electricity and is easy to rust. Compared with it, plastic corrugated pipes are not conductive and can prevent corrosion from stray currents and do not rust.
Small friction coefficient
Taking an approximate value, the friction coefficient of the plastic bellows is the friction coefficient of the metal bellows with reserved holes, which reduces the friction loss of the prestressed force during the tensioning process.
High strength, strong rigidity
Not afraid of stepping on pressure, no leakage under load, more suitable for vacuum grouting.