It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. These standard flange are resistant to corrosion and abrasion and ensure high durability. Weld neck flanges are drilled machined with the wall thickness of the flange having the same dimensions of the matching pipe. Weld neck flanges include a long tapered hub that aid in reinforcement and provide temperature pressure resistance. Long neck flanges are used by many industries because they are strong and resist. Long weld neck standard connection flanges texas flange. Dimensions in inches weld neck flanges and stud bolts asme b16. Ansi, mss and api standards govern flange dimensions and tolerances. Lapjoint flanges with neck ring for welding type 34 en 10921. Dimensions, sizes and specifications of din 2632 welding neck flanges pn1010bar engineering toolbox enabled for use with the amazing free sketchup 3d drawing and modeling program.
Mss sp44 is the only source for the nps 22 flange dimensions above. Standard bore will be furnished unless otherwise specified. Height of raised portion is equal to the depth of groove dimension e, is not subjected to the tolerances for e groove depth e is not included in flange thickness t but is included in the connection overall length l. Class 600 flange dimensions weld neck forged flange threaded forged flange lap joint forged flange socket weld forged flange blind forged flange slip on forged flange nom. The charts show the dimensions of weld neck flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters with dimensional tolerances. These flanges will be furnished with a 116 raised face unless otherwise specified. Weld neck flanges are welded directly to the pipe at the neck of the flange. Weld neck flanges a b, stainless steel weld neck flanges a. Minimum physical requirements ts 48,000 yp 30,000 ts 60,000 yp 35,000. Thickness t, raised face diameter r, length thru hub y, point of weld a.
Weld neck flange dimensions are covered in asme b16. Forged carbon steel, dimensions conform to ansi b16. Weld neck flanges or welding neck flanges can be differentiated from all other types of flange by their long tapered hub. This datasheet is for weld neck flanges that have a raised face connection. Weld neck flanges and stud bolts dimensions asme b16. Weld fittings and flanges astm specifications butt welding fittings carbon steel material specification astm specification a234 grade symbol wpa grade a wpb grade b type of steel carbon carbon chemical composition c0. Other material grades and compositions available upon request. Home datasheets flange datasheets standard connection flange datasheets flange long weld neck, ansi class 150, asme b16. Weld neck flange dimensions class 150 to class 2500. Class 600 flange dimensions duplexstainlesssteelflanges. Weights are based on manufacturers data and are approximate. Bolt circle diameters are 18 inch larger than bolt diameter.
By welding pipe to the neck of the flange stress is transferred to the pipe. Weld neck flanges are preferred for use in highstress applications. For the height measures h and b of all described dimensions of flanges on this website, with. Our range weld neck flanges, welding neck flanges are normally used for highpressure, cold or hot. Weld neck flanges a b dimensions welding neck flange bores according asmeansi b16. The inside diameter of the flange is machined to match the inside diameter of the tube reducing friction and obstruction of flow. Long weld neck flange dimensions class 150 to class 2500. Pn 16 flanges din en 10921 dimensions of pn 16 flanges. Weldneck flanges or weldingneck flanges can be differentiated from all other types of flange by their long tapered hub. Din flanges are widely used in special circumstances with their main advantage being that they can be attached to the pipe without welding. Forged stainless steel flange dimensions conform to asme b16. Din flanges, din weld neck flanges, din threaded flanges, din. The flange neck has a beveled end that, when connected to a pipe, creates a trough for a strong weld. In pressure classes 150 and 300, the height of raised face is approximately 1.
Din 26 32 pn10, welding neck flanges, nw long weld neck. Weld flange dimensions welding neck flanges 150 lb. Flate face ff, raised face rf, ring type joint rtj ss flange standards types and pressure class. Nominal pipe size outside diameter overall diameter inside diameter flange thickness min overall length diameter at weld bevel hub diameter face diameter number of holes bolt hole diameter diameter of circle of holes kg in piece mm in mm in mm in mm in mm in mm in mm in mm in mm in mm 12 0. Long weld neck flange dimensions are covered in asme b16.
Benefits of using weld neck flanges weld neck flanges. This dimension is commonly associated with true lap joints. Long welding neck flanges catalogue hydraulic and offshore. Nominal pipe size outside diameter o thickness t raised face diameter r length thru hub y point of weld a hub diameter x bore b number of holes diameter of. The typical length stocked is 9 and 12 and can be machined to shorter lengths with a quick turnaround.
The knife is a group you can rotate, change the size of, and even add or remove objects within example add a function curve for an advanced cut. Flat face flanges may be provided at full thickness, c, or with raised face removed the latter is nonstandard. This flange is desirable for high pressure applications. A long weld neck flange has a barrel that provides proper clearance between the nut and neck. Coastal flange stocks import and domestic ansi b16. Din 26 32 pn10, welding neck flanges, nw long weld neck flanges. Bored to match the inside diameter of the mating pipe or fitting, these flanges are directly welded to the end of the pipe. C o r b 1 a x y 1 weld neck flange r o c blind flange x b 2 o r c y 1 slip on flange. Weld neck flanges type 11 according to en 10921 100 148 nominal pressure pn 6 dn flange bolting 50 140 110 14 38 14 8 6 2,9 90 2 4 m12 2 4 m16 125 240 200 18 48 18 10 8 4 178 2 8 m16 210 170 18 45 16 10 8 3,6 150 265 225 18 48 18 12 10 4,5 202 2 8 m16. Welding neck flanges weld neck raised face flanges latest. For the height measures h and b of all described dimensions of flanges on this website, with exception of the lap joint flange, it is important to understand and remember the following. During dimensional inspection of flange, you should check for. Weld neck flanges are flanges with the wall thickness of the flange having the same dimensions of the matching pipe, the lighter the pipe is, the larger the bore, conversely, the heavier the pipe, the smaller the bore, they are normally used for high pressure, cold or hot temperature.
The welding neck flanges is normally referred to as the high hub flange. Long weld neck flange manufacturing forged components. Stainless steel pipe fittings and valves are the focus of pipingnow com our large inventory. Flange en10921 type 11 flange, pn6, pn10, pn16, pn25, pn40. These flanges can also be manufactured with contoured bottoms. The length of the flange can be increased if an offset attachment is needed on the heads or vessel shells. It covers forged steel flanges, sizes nps 12 dn 15 through nps 24 dn 600. Supply flange dimension dn15 dn2000 12 80, forged flange. The lighter the pipe is, the larger the bore, conversely, the heavier the pipe, the small the bore.
You may note that either spec only includes weld necks. Weldneck flanges type 11 according to en 10921 100 148 nominal pressure pn 6 dn flange bolting 50 140 110 14 38 14 8 6 2,9 90 2 4 m12 2 4 m16 125 240 200 18 48 18 10 8 4 178 2 8 m16 210 170 18 45 16 10 8 3,6 150 265 225 18 48 18 12 10 4,5 202 2 8 m16. Api 2000,3000,5000 and there are two high pressure series, api 10,000 and 15,000. Dimensions d, b, t and h refer to the basic flange dimensions.
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