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Carbon Steel Slip-on Raised Face ANSI B16.5 Forged 900 Flanges with Power Coating¹

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Product Description ANSI B16.5 FORGING FLANGE -- Slip-on flangeSlip-on flange is a type of flange that is designed to easily slip over the end of a pipe, making installation straightforward and efficient. This flange type is typically welded both inside and outside to ensure a secure and leak-proof connection, making it suitable for a wide range of applications in various industries.According to ASME/ANSI B16.5, slip on flanges are available in six pressure ratings covering Class 150, Class 300, Class 400, Class 600, Class 900 and Class 1500 from 1/2″ to 24″, except that slip on flanges of Class 1500 are only available through 1/2″ to 2-1/2″.The slip on flange conforming to ASME B16.5 may generally be furnished with three facing types: raised face (RF), flat face/ full face (FF), or ring type joint (RTJ). As a flange with hub, it shall be manufactured as one piece in accordance with the applicable material specification, either from forgings or castings.The slip on flange (S/O flange) manufactured in accordance with ASME B16.5 is a loose-type flange which has no direct connection to the adjoining pipe wall or the nozzle neck, or the vessel. It has a low hub that allows the flange to slip onto the pipe prior to welding. Two fillet welds, one internal and one external, shall be applied to provide sufficient strength and prevent leakage. It requires less skill to assemble and permits aligning bolt holes by rotating the flange before welding.Product Parameters Slip-On Flange (SO)Weld Neck Flange (WN)Threaded Flange (TH)Lap Joint Flange (LJ)Blind Flange (BL) NominalPipeSizeOutsideDiam.Diamat Baseof HubO.D.ofRaisedFaceThicknessBORELENGTH THRU HUBDiam.of Hub at BevelWeldingNeckSlip-onLapJointCounterBore Min.ThreadedMin.WeldingNeckSlip-onThreadedLapJointDXGtB1B2B3BT1T2T3A 1/212138.135.1 22.4See Nole(1)To be specifiedby purchaser22.422.923.660.531.831.821.3 3/413044.542.9 25.427.728.229.069.935.135.126.71 14952.350.8 28.434.535.135.873.241.141.133.51 1/415963.563.5 28.4 43.243.744.573.241.141.142.21 1/217869.973.2 31.8 49.550.050.582.644.544.548.32 216104.691.938.1 62.062.563.5101.657.257.260.52 1/2244 124.0 104.6 41.1 74.7 75.4 76.2 104.6 63.5 63.5 73.2 3241127.0127.0 38.190.791.492.2101.653.853.888.9 4292158.8157.2 44.5 116.1116.8117.6114.369.969.9114.3 5349190.5185.7 50.8143.8144.5144.5127.079.279.2141.2 6381235.0215.9 55.6170.7171.5171.5139.785.985.9168.4 8470298.5269.7 63.5221.5222.3222.3162.1101.6114.3219.2 10546368.3323.969.9 276.4277.4276.4184.2108.0127.0273.1 12 610419.1381.0 79.2327.2328.2328.7200.2117.3142.7323.9 14641450.9412.8 85.9359.2360.2360.4212.9130.0155.4355.616705508.0469.988.9 410.5411.2411.2215.9133.4165.1406.4 18787565.2533.4 101.6461.8462.3462.0228.6152.4190.5457.2 20 857622.3584.2 108.0513.1514.4512.8247.7158.8209.6508.0 241041749.3692.2139.7 616.0616.0614.4292.1203.2266.7609.6 NominalPipeSzeRadlusofFilletThreadLengthDRILLINGBOLTINGAPPROXIMATE WEIGHTDlamofBoits(inch)Stud Bolt LengthBoltCircleDlam.Number ofHolesDlamofHoles0.25"RalsedFaceMale-FemaleTongue-GrooveRIngJolntWeldingNeckSllp-onandThreadedLapJointBlindRQKgIbKgIb KglbKgIb 1/23.0 22.4 82.6 4 22.4 3/4108.0 101.6 108.0 2.10 4.60 1.81 4.00 1.81 4.00 1.90 4.20 3/43.0 25.4 88.9 4 22.4 3/4114.3 108.0 114.3 2.72 6.00 2.40 5.30 2.30 5.00 2.70 6.00 1 3.0 28.4 101.6 4 25.4 7/8127.0 120.7 127.0 3.86 8.50 3.41 7.50 3.40 7.50 4.09 9.00 1 1/44.8 30.2 111.3 4 25.4 7/8127.0 120.7 127.0 4.54 10.00 4.10 9.00 4.09 9.00 4.54 10.00 1 1/26.4 31.8 124.0 4 28.4 1 139.7 133.4 139.7 5.90 13.00 5.45 12.00 5.40 11.90 5.90 13.00 2 7.9 38.1 165.1 8 25.4 7/8146.1 139.7 146.1 10.89 24.00 9.98 22.00 9.53 21.00 11.34 25.00 2 1/27.9 47.8 190.5 8 28.4 1 158.8 152.4 158.8 16.33 36.00 15.80 34.80 13.15 29.00 16.00 35.30 39.7 41.1 190.5 8 25.4 7/8146.1 139.7 146.1 15.00 33.00 11.80 26.00 11.34 25.00 13.17 29.00 411.2 47.8 235.0 8 31.8 1 1/8171.5 165.1 171.5 23.13 51.00 23.20 51.00 22.60 48.50 24.50 54.00 511.2 53.8 279.4 8 35.1 1 1/4190.6 184.2 190.5 38.50 84.90 37.65 83.00 36.74 81.00 39.46 87.00 612.7 57.2 317.5 12 31.8 1 1/8190.5 184.2 196.9 49.89 110.00 48.30 106.50 47.50 104.70 51.50 113.50 812.7 63.6 393.7 12 38.1 1 3/8222.3 215.9 222.3 79.45 175.00 75.00 166.30 86.00 189.60 89.00 106.20 1012.7 71.4 469.9 16 38.1 1 3/8235.0 228.6 235.0 118.04 260.00 111.13 245.00 125.64 277.00 131.54 290.00 12 12.7 76.2 533.4 20 38.1 1 3/8254.0 247.7 254.0 157.00 346.00 146.00 321.80 167.00 368.00 187.00 412.30 1412.7 82.6 558.8 20 41.1 1 1/2273.1 266.7 292.1 181.60 400.40 172.36 380.00 180.07 397.00 224.07 494.00 1612.7 85.9 616.0 20 44.5 1 5/8285.8 279.4 298.5 224.73 495.50 192.95 425.40 211.11 465.40 272.40 600.50 1812.7 88.9 685.8 20 50.8 1 7/8323.9 317.5 333.6 308.72 680.60 272.40 600.50 295.10 650.60 385.90 850.80 20 12.7 91.9 749.3 20 53.8 2 349.3 342.9 362.0 376.82 830.70 331.42 730.60 367.74 810.70 488.00 1076.00 2412.7 101.6 901.7 20 66.5 2 1/2438.2 431.8 457.2 685.00 1510.00 632.00 1393.30 700.00 1543.00 905.00 1995.00 Notes:(1) For the inside diameter of pipes(corresponding to 'Bore'(B1)of Welding Neck Flanges), refer to page 60.(2) Class 900 flanges except Lap Joint will be furnished with a 0.25"(6.35mm) raised face, which is not included in 'Thickness'(t) and Length through Hub' (T1), (T2).(3) For Slip-on, Threaded, and Lap Joint Flanges, the hubs can be shaped vertically from base to top or tapered within the limits of 7 degrees.(4) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without a hub.(5) The gasket surace and backslde(bearlng surace for boltlng)are made parall withln 1 degree. Spot facing is carried out according to MSS SP-9, without reducing thickness(t) to accomplish parcels.(6) Dimensions of sizes 1/2" through 2 1/2" are the same as for Class 1500 Flanges.ANSI B16.5 FORGED FLANGES TOLERANCETHREAD,SOCKET-WELDING, SLIP-ON,LAP JOINT AND BLIND.WELDING NECKOutsideDiameterWhen O.D.is24"or less±1/16"(1.6mm)OutsideDiameterWhen O.D.is24"or less±1/16"(1.6mm)*When O.D.isOver 24"±1/8"(3.2mm)*When O.D.isOver 24"±18"(3.2mm)InsideDiameterThreadedWithin limits onboring gaugeInsideDiameter10"and Smaller±1/32"(0.8mm)20"thru 18"±1/16"(1.6mm)Socket-WeldingSlip-on andLap joint10"&Smaller+1/32"(0.8mm).0"12"&Larger+1/16"(1.6mm).O"20"and Larger+1/8"(3.2mm)-1/16"(1.6mm)OutsideDiameterof Hub5"and Smaller+3/32"(2.4mm)-1/32"(0.8mm)Diameterof Hubat BaseWhen Hub Base is24"or Smaller±1/16"(1.6mm)*6"and Larger+5/32"(4.0mm)-1/32"(0.8mm)When Hub Base isOver 24"±1/8"(3.2mm)*Diameterof ContactFace1/16"Raised Face±1/32"(0.8mm)Diameterof ContactFace116"Raised Face ±1/32"(0.8mm)1/4"Raised Face Tongue & GrooveMale,Female±1/64"(0.4mm)14"Raised FaceTongue &GrooveMale,Female±1/64"(0.4mm)DiameterofCounterboreSame as for Inside DiameterDiameter ofHub at Pointof Welding5"and Smaller+3/32"(2.4mm)*-1/32"(0.8mm)6"and Larger+5/32"(4.0mm)-1/32"(0.8mm)DrillingBolt Circle±1/16"(1.6mm)DrillingBolt Circle±1/16"(1.6mm)Bolt Hole Spacing±1/32"(0.8mm)Bolt Hole Spacing±1/32"(0.8mm)Eccentricity ofBolt Circle withRespect to Facing21/2"Smaller1/32"(0.8mm)Max.3"&Larger1/16"(1.6mm)MaxEccentricity ofBolt Circle withRespect to Facing21/2"Smaller1/32"(0.8mm)Max.3"&Larger1/16"(1.6mm)Max.Eccentricity ofBolt Circle withRespect to Bore1/32"(0.8mm)Max.*Eccentricity ofBolt Circle withRespect to Bore1/32"(0.8mm)Max.*Eccentricity ofFacing withRespect to Bore1/32"(0.8mm)Max.*Eccentricity ofFacing withRespect to Bore1/32"(0.8mm)Max.*Thickness18"and Smaller+1/8"(3.2mm).0^Thickness18"and Smaller+1/8"(3.2mm),0"20"and Larger+3/16"(4.8mm).0420"and Larger+3/16"(4.8mm).OLengthThru Hub10"and Smaller±1/16"(1.6mm)LengthThru Hub10"and Smaller±1/16"(1.6mm)12"and Larger±1/8"(3.2mm)12"and Larger±1/8"(3.2mm)Notes:This tolerance is not covered in ANSI B16.5, but maker's option.STANDARD FINISHES for Face of Flange (ANSI B16.5)STOCK FINISH:The most widely used gasket finish.because practically is suitable for all ordinary service conditions. This is a continuous spiral groove. Flanges size 12" (304.8mm)and smaller are produced with a 1/16" round-nosed tool at a feed of 1/32" per revolution. For sizes 14" (355.6mm)and larger. the finish is made with a 1/8" round-nosed tool at a feed of 3/64" per revolution.SPIRAL SERRATED OR PHONOGRAPHIC:This finish is produced by using a 90°round-nosed tool.CONCENTRIC SERRATED:This finish is produced by using a 90°round-nosed tool.SMOOTH FINISH:The cutting tool employed shall have an approximate 0.06"radius.The resultant surface finish shall have a 125μ inch to 250μ inch(ANSI B16.5 para 6.4;4.1)1. RAISED FACE AND LARGE MALE AND FEMALE A serrated-concentric or serrated-spiral finish with 34 to 64 grooves per inch is used. The cutting tool employed has an approximate 0.06 in.radius.The resultant surface finish shall have a 125μ inch(3.2m)to 500μ inch(12.5μm) approximate roughness.2. TONGUE AND GROOVE AND SMALL MALE AND FEMALE The gasket contact surface does not exceed 125μ in. (3.2μm)roughness3. RING JOINT The inside wall surface of the gasket groove does not exceed 63μin.(1.6μm)roughness,4. BLIND Blind flanges need not be faced in the center if, when this center part is raised, its diameter is at least 1 in. smaller than the inside diameter of the corresponding pressure class fittings. When the center part is depressed, its diameter is not greater than the inside diameter of the corresponding pressure class fittings. Machining of the depressed center is not required.The manufacturing process of forged flanges begins with the selection of high-quality steel, which is heated and shaped under high pressure in forging dies to enhance its strength and durability. After forging, the flanges are trimmed, heat-treated to relieve internal stresses, and precisely machined to meet the required dimensions. They undergo rigorous inspection and testing for quality assurance, followed by surface treatments for enhanced corrosion resistance. This process results in flanges that are strong, reliable, and suitable for demanding industrial environments.Company ProfileDingxiang Country Gu Cheng Forging Company Ltd. is a leading manufacturer in Dingxiang County, Shanxi Province, known as the "Forging Capital of China." Established with a deep-rooted history in forging, we specialize in producing high-quality flanges and forged components for a wide range of industrial applications. Our extensive product line includes ANSI, DIN, JIS, and EN standard flanges and customized forged parts designed to meet specific customer requirements.Gu Cheng Forging with over 30 years of experience in producing high-quality forged flanges. Including Weld Neck Flange (WN), Slip-On Flange (SO), Blind Flange (BL), Socket Weld Flange (SW), Lap Joint Flange, Plate Flange, and Customized forged flange.At Gu Cheng Forging, we serve a global market, providing flanges and forged components for industries such as oil and gas, chemical processing, power generation, shipbuilding, and more. We pride ourselves on our ability to deliver tailored solutions, meeting the highest standard of safety, performance, and efficiency.As a factory, we can tailor flanges based on your specific requirements for size, material, pressure rating, and surface treatment (galvanization, black paint, etc.). By preventing rust and deterioration, the coating enhances the flange's performance, offering long-term resilience and reducing maintenance needs over time.Dingxiang Country Gu Cheng Forging Company Ltd, strives to be a trusted partner for all your forging needs, ensuring long-term cooperation and mutual success.Q1: Are you a manufacturer or a trading company?A1: We are a professional manufacturer with over 30 years of experience in forging flanges. Our factory is located in Dingxiang, China, known as the "Forging Capital." We produce high-quality, customized forged flanges, offering factory-direct pricing and ensuring top-notch quality.Q2: What types of flanges do you produce?A2: We manufacture a wide range of forged flanges, including:Weld Neck Flange (WN)Slip-On Flange (SO)Blind Flange (BL)Socket Weld Flange (SW)Threaded Flange (TH)Lap Joint FlangePlate FlangeAll our flanges comply with international standards such as ASME, DIN, JIS, and BS.Q3: What materials do you use?A3: We offer flanges in a variety of materials, including:Carbon SteelStainless SteelAlloy SteelEach material is sourced from certified suppliers, ensuring durability and performance in diverse industrial applications.Q4: Can you provide customized flanges?A4: Absolutely! As a factory, we specialize in customization. We can tailor flanges based on your specific requirements for size, material, pressure rating, and surface treatment (galvanization, black paint, etc.).Q5: How do you ensure the quality of your products?A5: Quality is our top priority. Every flange undergoes a strict inspection process, including:Material analysisDimensional checksPressure testingSurface treatment inspectionsOur CNC machining ensures precise dimensions, and we adhere to strict international standards throughout the manufacturing process.

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