·Material: High Density Polyethylene Size: 110mm to 800mm ·Ring Stiffness: SN4 and SN8 ·Color: black or other colors upon request ·Standard: BS EN13476-2:2007 BS EN13476-3:2007+Al:2009,GB/T19472-1 ·Application: municipal sewage, rainwater discharge, floodwaters drainage, irrigation, ventilation for mine and buildings, industrial waste discharge
