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清掃孔（QSK型） Cleaning hole
清掃孔裝于重質(zhì)油罐底部、清掃孔油罐可放出污水掃除內(nèi)污泥。
Cleanout hole series can be set at the cornet from the bottom tank shell course to the bottom of the heavy oil storage tank for cleaning and draining during maintenance.
