PYZM Rounded Cast iron Sluice Gate 1.It is the material of the Cast iron . 2.The shape of the sluice gate is round. PYZM Rounded Cast iron Sluice Gate 1.This product is simple and convenient to be installed. 2.This product is widely used in water supply, water drainage engineering, the flow of water to truncate the channels, the working medium is the raw water, under normal temperature water, ...