Factory Custom ANSI B16.5 Socket Welding Flange Class 600 4 Inch for High-Pressure Steam Systems¹

Product Description ASME/ANSI B16.5 FORGING FLANGE --  Class 600  Socket welding flangesGUCHENG FORGING supplies a full range of socket welding flanges manufactured to ASNI/ASME B16.5 in Class 150, Class 300, Class 600 and Class 1500 pressure ratings.The socket welding flange conforming to ASME B16.5 is also a hubbed flange, which is generally constructed of a circular flange body and a tapered hub. The flange shall be manufactured as one piece and the taper shall not exceed 7 degrees. A socket structure of a certain depth shall be machined out in the bore. The diameter of the socket shall be the same as that of the slip-on flange of the same size. The diameter of the smaller bore shall be equal to the nominal inside diameter of the adjoining pipe or the bore diameter of the welding neck flange of the same size. The socket welding flange can be furnished with a raised face (RF), flat face (FF), or ring-type joint (RTJ).Socket welding flange is welded to a pipe by a circumferential fillet weld, which joins the outside surface of the pipe and the hub of the flange. The fillet weld is a weld of an approximately triangular cross section joining two surfaces approximately at right angles to each other. The pipe is inserted into the socket of the flange first and alignment is relatively simple since the pipe fits into the socket readily. A 1/16″ (2.0 mm) gap shall be maintained prior to welding between the pipe end and the socket bottom of the flange. This gap is furnished to allow for differential thermal expansion of the mating elements. If there is no gap, when temperature increases, the thermal expansion difference between the pipe and the socket weld flange may result in cracking of the fillet weld. An internal weld is sometimes employed for added strength. By grinding the internal weld smooth, turbulence and flow restriction are kept to a minimum.https://guchengforging.en.made-in-china.com/product-list-1.htmlThe flanges are available across various materials: Cabon Steel, Stainless steel, Duplex Steel .......Product ParametersSlip-On Flange (SO)Weld Neck Flange (WN)Socket Weld Flange (SW)https://guchengforging.en.made-in-china.com/product-list-1.htmlThreaded Flange (TH)Lap Joint Flange (LJ)Blind Flange (BL) NominalPipeSizeOutideDiam.Diam.at Baseof HubO,D,ofRaisedFaceThicknessBORELENGTH   THRU   HUBDiam.ofHub atBevel Radius  of  FilletThreadLengthWelding NeckSocket WeldingSlip-onSocketWeldingLapJointCounter  Bore MinWeldingNeckSlip-onThreadedSocketWeldingLapJointDXGtB1B2B3BT1T2T3ARQ 1/29538.135.114.2See Note(1)To be specifiedby purchaser22.422.923.652.322.422.421.33.015.7 3/411747.842.915.727.728.229.057.225.425.426.73.015.7    112453.850.817.534.535.135.862.026.926.933.53.017.51 1/413363.563.520.643.243.744.566.528.428.442.24.820.61 1/215569.973.222.449.550.050.569.931.831.848.36.422.42    16584.191.925.462.0 62.563.573.236.636.660.57.928.42 1/2191100.1104.628.474.775.476.279.241.141.173.27.931.8    3210117.3127.031.890.791.492.282.646.046.088.99.735.13 1/2229133.4139.735.1103.4104.1104.985.949.349.3101.69.739.64273152.4157.238.1116.1116.8117.6101.653.853.8114.311.241.15330189.0185.744.5143.8144.5144.5114.360.560.5141.211.247.86356222.3215.947.8170.7171.6171.5117.366.566.5168.412.750.88419273.1269.755.6221.5222.3222.3133.476.276.2219.212.757.210508342.9323.963.5276.4277.4276.4152.485.9111.3273.112.765.012559400.1381.066.5327.2328.2328.7155.491.9117.3323.912.769.914603431.8412.869.9359.2360.2360.4165.193.7127.0355.612.773.216686495.3469.976.2410.5411.2411.2177.8106.4139.7406.412.777.718743546.1533.482.6461.8462.3462.0 184.2117.3152.4457.212.779.220813609.6584.288.9513.1514.4512.8190.5127.0165.1508.012.782.624940717.6692.2101.6616.0 616.0614.4203.2139.7184.2609.612.791.9 NominaPipeSizeDepthofSocketDRILLINGBOLTINGAPPROXIMATE     WEIGHTDiamofBolt(Inch) Stud Bolt LenglhBoltCircleDiam.NumberofHolesDiamofHoles0.25"RaisedFaceMale-FemaleTongue-GrooveRingJointWeldingNeckSlip-onandThreadedLapJointBlindSocketWeldingYKglbKgIbKgIbKglbKg  Ib 1/29.766.5415.7 1/276.269.976.20.902.000.912.000.801.800.912.000.912.00 3/411.282.6419.1 5/888.982.688.91.593.501.403.001.363.001.403.001.363.001    12.788.9419.1 5/888.982.688.91.904.001.703.701.593.501.814.001.814.001 1/414.2  98.6419.1 5/8  95.388.995.32.495.502.275.002.044.502.405.302.605.701 1/215.7 114.3422.4 3/4108.0101.6108.03.638.003.106.802.956.503.407.503.187.00217.5127.0819.1 5/8108.0101.6108.04.54 10.00 3.63 8.00 3.63 8.00 4.40 9.70 3.908.602 1/219.1149.4822.4 3/4120.7114.3120.76.3514.005.4412.004.9911.006.8015.005.9013.00320.6168.1822.4 3/4127.0120.7127.08.1618.007.2616.006.3514.008.9019.607.4016.303 1/222.4184.2822.4 7/8139.7133.4139.711.8026.009.5321.009.0820.0013.1729.00     423.9215.98 25.4 7/8146.1139.7146.116.7837.0014.9733.0014.0631.0018.6041.00     523.9266.78 28.41    165.1158.8165.130.8768.0028.5062.8027.5060.6030.8468.00     626.9292.112 28.41    171.5165.1171.536.7780.0036.3280.0035.3878.0038.0083.80     831.8349.31231.81 1/8190.5184.2196.950.80112.0044.0097.0050.80112.0062.20137.00     1033.3431.81635.11 1/4215.9209.6215.986.26190.0076.20168.0074.00163.00102.00224.90  12    39.6489.02035.11 1/4222.3215.9222.3102.51226.0097.52215.00108.86240.00132.00291.00  1441.4527.12038.1 1 3/8235.0228.6235.0121.56268.00102.00224.80111.00244.70158.00348.30   1644.5603.32041.11 1/2254.0247.7254.0177.06290.00149.82330.20165.71365.30224.73495.40  1849.3654.12044.51 5/8273.1266.7273.1215.65475.40180.10412.30194.00427.70285.00628.30  2054.1723.92444.51 5/8285.8279.4292.1267.86590.50231.54510.50258.78570.50365.00804.70  2463.5838.22450.81 7/8330.2323.9336.6372.00820.00330.00725.50362.00798.00533.451176.0  Notes:(1) For the inside diameter of pipes (corresponding to 'Bore' (B1) of Welding Neck Flanges), refer to page 60.(2) Class 600 flanges except Lap Joint will be furnished with  0.25" (6,35mm) raised face, which is not included in thickness'(t) and Length through Hub'(Ti),(T2).(3) For Slip-on, Threaded, and Lap Joint and Socket Welding Flanges, the hubs can be shaped either 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 Sllp-on Flanges or without a hub.(5) The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parcels, spot facing is scared out according to MSS SP-9, without reducing thickness(t).(6) Dimensions of sizes 1/2" through 3 1/2" are the same as for Class 400 Flanges.(7) Depth of Socket (Y) is covered by ANSI B16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer's optlon. 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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