The values of the bracket means the sizes of straight fittings defined in the codes of SH 3410, and the relevant sizes of the reducingfittings refer to the standards of production.
括号内的数值为SH 3410标准中规定的同径管件尺寸，相应的异径管件尺寸见产品标准。
2
Green roof surfaces collect and filter the area's prodigious rainfall in rooftop water tanks for use in low-water fixtures and fittings, reducing the need to waste treated water.