outdoor galvanized ASTM 123 floor drain grate cover steel grating informations:1.Material: Mild (low carbon) steel (CN: Q235, US: A36, UK: 43A) or stainless steel; 2.Surface treatment:galvanized {CN: GB/T13912, US: ASTM (A123), UK: BS729} ,painted,untreated; ...
1.Sump square trench drain grating cover introduction: Use banding steel grating to design and manufacture, widely used in urban road, square, garden, docks, and airports, parking lot, highway, railway, industrial engineering and other kinds of industrial and civil ...