What is the appropriate size of the fitting pipe diameter?
Drain pipe size
(1) Drainage branch pipes connected with washbasin, sink, bathtub and sanitary basin have a pipe diameter of dn32 (the diameter of the sewer pipe is 32 mm), and the larger specification can use dn40 (the diameter of the sewer pipe is 40 mm).
(2) The diameter of the drainage branch pipe connected to the urinal and urinal is dn50 (the diameter of the sewer pipe is 50 mm) and dn75 (the diameter of the sewer pipe is 75 mm).
(3) The diameter of the drain pipe connected to the toilet is dn110 (the diameter of the sewage pipe is 110 mm).
(4) The diameter of the drainage horizontal pipe and the drainage stand pipe connected to the toilet shall not be less than dn110 (the diameter of the downpipe is 110 mm).
(5) The diameter of the drain pipe of the urinal tank or the drain pipe connecting more than 3 urinals shall not be less than dn75 (the diameter of the drain pipe is 75 mm).
(6) The diameter of the drainage pipe of the sewage tank and washing basin in the hospital shall not be less than dn75 (the diameter of the sewage pipe is 75 mm).
(7) The diameter of the drain pipe of the washing tank and sewage tank in public canteens and restaurants shall not be less than dn75 (the diameter of the downpipe is 75 mm). In public canteens and restaurants. public