alkali &acidaaresisting, anticorrosion, insulating, innoxious, endurable for water pressure, agingaaresistant, easy to fix Dn (mm)En (mm)Capacity (5.8M/PCS)20'GP40'HQPCSMeterPCSMeter502.0180610474.8453626308.8752.38124709.6201611692.81103.23612093.89125289.61253.22891676.27144141.21604.0169980.24422563.62004.910058026015082506.264371.21609283157.836208.896556.84009.8251456034850012.31692. ...