·Material: Unplasticized Ploy (Vinyl Chloride) Size: 63mm to 1000mm ·Ring Stiffness: SN4 and SN8 ·Color: cream or other colors upon request ·Standard: ISO 21138-2, ISO 21138-3, GB/T18477-1 ·Application: municipal sewage, rainwater discharge, flood waters drainage, irrigation, ventilation for mine and buildings, industrial waste discharge and communication protecting

·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

· Material: High Density Polyethylene Size: 500mm to 2400mm · Ring Stiffness: SN8, SN12.5 and SN16 Color: black or other colors upon request · Length: 6m or other length upon request · Applications: municipal sewage, rainwater discharge, floodwaters drainage, irrigation, industrial waste discharge

·Material: High Density Polyethylene ·Size: 200mm to 2400mm ·Ring Stiffness: SN4, SN8 and SN12.5 ·Color: black or other colors upon request. ·Length: 6m,11.8m or other length 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 and communication protecting.