The nodular cast iron inspection well chamber was produced by the EPC process. The lost foam process for integral casting and the existing pipe fitting mold were adopted

which used less mold and low production cost; T-type and K-type socket connection and flange type interface connection with the pipeline were adopted

which has good sealing performance

simple assembly

convenient construction and low maintenance cost; The well chamber was coated with anti-corrosion coating inside and outside

which has good corrosion resistance and long service life.