Elbow ventilation tube 1, the toxic gas emissions within drains out to meet hygiene requirements; 2, snorkel into the cisterns, tanks and drains to add fresh air, in order to reduce corrosion of metal pipes, extended use life; 3, cisterns, tanks should be set more than two snorkel to enhance the capacity of the drainage system, (take a small example, an intravenous drip when the bottle down the liquid to flow out, you must insert a ventilation tube, one end through the atmosphere at one end through the gap between the bottom surface and prevent the formation of negative pressure in the pipeline, to ensure smooth drainage) prevent the formation of stagnant water, odor, reduce pressure fluctuations, protect the seal and prevent seal damage. 4, can quickly and harmful gases and steam reservoir tank is discharged, the built-in gauze to prevent the gauze can effectively prevent disease vector insects and dust into to destroy water quality. Elbow snorkel standard W-100, W-150, W-200 Power accessories Hebei Yongsheng Industrial Park in North China the production and sale of power plant piping miscellaneous components of the professional manufacturers The company has domestic advanced production line is the production of D-LD2000 coal smoke wind pipeline components series, 02S403 02S404 National Building Standard Design steel pipe fittings, GD87 thermal power plant steam piping parts and components, GD2000 miscellaneous pipe fittings, petrochemicals accessories, chemical components, transportation equipment, plumbing products, metallurgy and petroleum a variety of industries. Hanger (Northwest Hospital standard, HG / T21629-1999 etc.) plant miscellaneous (GD87, GD2000, etc.) coal smoke wind pipeline components (74DD, D-LD2000, etc.) waterproof casing, water bell and bracket (02S403, 02S404, etc.) all kinds of manholes, hand holes (74DD, D-DL2000, HG / T21514-21535 etc.) all kinds of difficult pieces. Welcome new and old customers to visit and cooperation and win-win! The following is our products: coal mixer, [feed pump (inlet, import) filter], [(rigid, flexible) waterproof casing], [(single-stage, multi-level) orifice plates], [ (elbow type, cover type) snorkel], [flow indicator (flange, threaded, threaded)], [(round, square) throttle], [(bidirectional, three-way) shift indicator], [ (round, slope, gravity) proof door], [filter (T-type, Y-type, basket)], [manhole (circular, insulation, quick open, rectangle)], [drainage funnel (HGS07 standards, S5-6-1 standard, GD87 / 2000 standard)], [suction bell, suction tube speaker, suction tube speaker stand], air defense hat, rain hat, creeping inflation measurement points, high temperature throttle lever, hydrophobic collector, hydrophobic plate, pour sparse, swing blocking plate, butt plug, 8-word blind plate, hemispherical dome, clean mouth, inspection port, water bucket, mirrors, floor drain, metal hose, tube clamp / pipe clamp / holder , quick connectors, flow measurement orifice welded flange assembly, pad ring flange assembly, insulating flange insulation joints, pipe flame arrester, current limiting orifice, reinforcing rings, valve gear sprocket to pump again loop multi-level throttling device / flange, size, head, elbow and other quality products. I always adhere to the "loyal and trustworthy customer service, quality brand contributing to society," the quality policy, the establishment of a sound marketing system, the business elite distribution throughout the country, has petrochemical, power, chemical, shipbuilding, pharmaceutical, paper and other national key projects project to provide high-quality products and first-class service and get good praise. Customer demand is our pursuit