Competitive Price for Bidirectional Knife Gate Valve - Multi Plates Assembly Corrugated Metal Pipe Culvert – Kingnor

Multi Plates Assembly Corrugated Metal Pipe Culvert 1.Material of steel plate: Q235 or SS400 2.Thickness of steel plate:1.5mm-8mm 3.Pipe Diameter: 400mm-9000mm 4.Corrugation: 68*13,125*25, 150*50, 200*55, 300*110, 380*140, 400*150 5.Depth of fill: 1.5-60m 6.Anti-corrosion treatment: hot dip galvanized ≥84μm（610g/㎡） 7.The second anti-corrosion: usually asphalt(bitumen) coated or epoxy resin coated. 8.Using life:≥100 years. 9.Standard: JTT 791-2010 ,or AASHTO M36.