I produced a hexagonal honeycomb inclined tube using ethylene-propylene copolymer plastics materials, mechanical thermal infrared heated pull into a hexagonal tube, then the use of patented technology, high-frequency welded into the overall product to the customer site installation. Inclined tube is mainly used to precipitate outlet Desanding, industrial and domestic water drainage works, sewage sedimentation, grease traps and tailings enrichment process can also be used for the transformation of the old pool, the main features: wet weeks, small hydraulic radius, laminar flow good state, particle precipitation from flocculation flow interference. Inclined tube is mainly used for all kinds of precipitation and Desanding effect. Is the most widely adopted over the past decade and a sophisticated water treatment plant in the water supply and drainage projects. Straight for the tower biological filter, high-load biological filter and submerged biofilter (also known as contact oxidation pond), and microbial bio-wheel vehicle, primarily for industrial organic waste, urban sewage biological treatment, high efficiency in the activated sludge tank, small footprint; activated sludge aeration intensity below, and does not require sludge return; a small amount of sludge, adaptable, greatly reducing the amount of processing sludge dewatered. But also for the transformation of the existing old pool, it has achieved good economic results. Main features: 1, wet weeks, hydraulic radius. 2, laminar flow state is good, particle deposition from turbulent flow interference. 3, when the oblique tube length of 1 meter, the payload of 3-5 t / m 2 design, VO controlled within 2.5-3.0 mm / sec, the best water quality. 4, Sedimentation, its capacity is 3-5 times advection sedimentation tanks, clarifiers and accelerated pulse 2-3 times to clarify the pool, thus reducing the footprint. 5, a small amount of sludge, reducing the sludge dewatering and other post-processing workload; resulting sludge settling, and is conducive to remove the rear section of suspended solids.