Want to know the difference between DN200 expansion joint ductile iron and steel? Read on!
DN200 expansion joints made of ductile iron and steel are two common types of pipe expansion joints that differ in material, performance and application. Materially, ductile iron expansion joints are made of ductile iron, while steel expansion joints are made of steel. In terms of performance, the elasticity of the ductile iron expansion joint is better, because its material has good plasticity and toughness, and can withstand large deformation. Whereas, the elasticity of steel expansion joints is relatively poor because the plasticity and toughness of steel are relatively low. In terms of corrosion resistance, ductile iron expansion joints have strong corrosion resistance and can be used in harsh environments, such as acid, alkali, salt and other environments. Steel expansion joints, on the other hand, have poor corrosion resistance in harsh environments and are prone to rust and corrosion. In terms of bearing pressure, steel expansion joints have good bearing pressure and can withstand large pipeline pressure. Whereas, the performance of ductile iron expansion joints is relatively poor in terms of bearing pressure.
Ductile iron expansion joints and steel expansion joints have their own advantages and disadvantages, so everyone should choose the right expansion joint according to the actual situation!