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FM UL Approved Ductile Iron ASTM A536 Flexible Coupling Inch 4" for Fire Fighting System1.Product Description2. Main Material parametersBolts and NutsLab Hear treated and electro galvanized bolt with oval neck and heavy duty hexagon nuts.Track head meet to the physical and chemical requirements od ASTM A 449 and physical requirementof ASTM A-183.Rubber GasketMaterialCompositionGasket Mark ColorApplocableTemperature EPDM E Black 34ºC- +150 ºC Siliconrubber S White -40ºC-+177ºC Nitrile rubber N Black -29ºC-+82ºCNotes:1.Gasketringsofdifferentmaterialswillbeusedfordifferentliquidmediums. 2.Productscanbesuppliedaspercustomersrequirments.3. Product ScopesProducts SeriesRigid Coupling, Flexible CouplingGrooved Equal Tee, Grooved Reducing Tee, Threaded Reducing TeeGrooved Mechanical Tee, Threaded Mechanical Tee, Threaded U-Bolted Mechanical Tee 90°Elbow,45°Elbow,22.5°Elbow,11.25°ElbowGrooved Equal Cross, Grooved Reducing Cross, Threaded Reducing CrossGrooved Reducer, Threaded Reducer, Grooved Eccentric ReducerGrooved Adaptor Flange, Threaded Adaptor Flange,CapProduce per Customer’s DrawingProducts RangeFM UL CE approved Ductile Iron grooved Pipe fitting and CouplingsBrandWFHSHCertificationFM/UL/CE/ISOSize1/2 inch-16 inchMaterialDuctile Iron, ASTM A536/QT450-10TechniquesCastingWorking Pressure300 PSI/2.07 MapSurface FinishEpoxy Powder,Paint,Galvanization, DacrometPackingPlastic bags,Cartons,Packing belt,plywood pallet,Plastic FilmCapacity80000 Tons/YearDelivery Time20 days after receiving the depositPayment TermT/TApplication1)Automatic sprinkler system for fire protection on commercial ,civil and municipal constructions like water supplying ,gas supplying, heat supplying,etc2)Industrial pipeline system on shipping ,mine, oil field,textile,powder plant,etc.3)Pipeline system on subway station ,railway station ,airport, seaport,bridge,etc4.FAQQ1: Can Ihave my own customized product?A: Yes, your customized requirements for color, size, package, mark, etc.Q2: How long is your delivery time?A: Generally it is 5-10 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.Q3: Do you provide samples? Is it free or extra?A: Yes, we could offer the sample for free charge but do not pay the cost of freight.Q4: What are your terms of payment?A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shipment.