Technical Standard for Trenchless Repair of Urban Drainage Pipelines (DG TJ08-2354-2021J15912-2021)/Shanghai Engineering Construction Code(Chinese Edition)
SHANG HAI SHI PAI SHUI GUAN LI SHI WU ZHONG XIN BIAN SHANG HAI SHI CHENG SHI JIAN SHE SHE JI YAN JIU