The cleaning method of double flange limit expansion joint

Double flange limit expansion joint manual rust removal, in our expansion joint to remove rust need to use brushes and sand cloth, these need to choose steel, otherwise there is no way to clean off the rust. And when we remove the rust, we should choose something acidic, so that the residual rust can be removed, but remember not to pour all the acid in at once. When doing the rust removal work, we should soak the telescope in warm water with sulfuric acid for a while, and then clean it with steel wire brush and sand cloth, and repeat this two to three times, and then rinse it with clean water, and the rust removal work is finished.
 
When the pipeline medium is lower than 20 ℃, the pipeline is affected by temperature contraction, when the ductile iron double flange limit expansion joint elongates. When the medium is above 20 ℃, the pipeline expands and elongates, and the compensator compresses. When the medium remains unchanged at 20 ℃, the ductile iron double flange limit expansion joint remains in place. Steam pipeline will expand and elongate after being heated, if this elongation is not absorbed effectively, it will cause damage to the pipe support by thrust, and in serious cases, it will cause the pipe to fall off. The function of ductile iron double flange limit expansion joint is to absorb the amount of pipeline expansion. From the appearance, the pipeline expansion joint is contracted when the pipeline is in the hot state and elongated when it is cold.