Ansi 125 flange dimensions pdf
Ansi 125 flange dimensions pdf. larger than bolt diameter. 5 295 8 23 250 395 26 350 12 23 Oct 23, 2023 · A Guide to ANSI Flanges and its Dimensions. *1/16 in. 0. g. BS 10 Table D Flange Dimensions 125: 254. 1 Industry Standard, offering specifications and guidelines for flanges in various industries. Dimensions given herein are th ose Page Contents. 53 standards conform to the drilling and facing of ASME B16. Note 2: For Class 150, 300 the flange thickness “D" dimension includes approx. Dia. (c)- This dimension is commonly associated with “true” lap joints. Dia of. 70°C. Note that there are two The pressure ratings change based on the material from which it is made and/or the temperature at which it operates. 5-2017 (Revision of ASME B16. 7. 13. Dimensions & tolerances in accordance with ANSI B16. We can furnish pipe or fittings with Class 250 flanges, on special order in limited configurations. 00 4. ANSI B16. com Fax: 886-423112578 ANSI B16. 5" NB (DN125) Flange Table - Flange Dimensions. Center-to-face tolerances are one half the face-to-face tolerances. The nominal flange Class (e. 06" for sizes 4"-10" and ± . 125 The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. Pipe Flanges and Flanged Fittings NPS ½ Through NPS 24 Metric/Inch Standard AN AMERICAN NATIONAL STANDARD ASME B16. if you have any requirement of other flanges you can contact us any time and we will surely produce ANSI B16. American Pipe Flange Dimensions ANSI CLASS, NUMBER OF STUD BOLTS AND HOLE DIAMETER IN INCHES, PER ANSI B16. Discover the ANSI B16. Sizes 1-inch through 8-inch also apply to ANSI Class 300 bronze flanges. 5 Flange Dimensional Sizes 1/2 to 2 1/2 inches Table Chart Size DN125. Download. ASME/ANSI B16. 00 812. Scribd is the world's largest social reading and publishing site. GASKET DIMENSIONS FOR ANSI FLANGES. 69 1. Eccentricity between bolt circle and diameter and machined facing diameters NPS 3 and larger. Pipe Size. 88 are in bold print, indicating different welding end contour. ANSI B 16. 63 15. 5 1824. Also shown are the number and size of bolt holes for each line size. 10. AS4331. NOTE 2 For dimension . au Carbon Steel ASME/ANSI Flanges – Dimensions & Weights These diagrams relate to the tables of flange specified dimensions on the following pages. Weights are in pounds. For example, an ANSI/ASME B16. Flanged Fittings are manufactured in accordance with ANSI/AWWA C110/A21. AMERICAN Ductile Iron Flanged Fittings. 1. Industry standard is to make to the slip on length through the hub. 5 1. txt) or read online for free. Methods of designating openings. 0 & pn-1. astm a182 flanges ansi b16. 1 which is a replication of ISO7005-1 which in turn is equivalent to ASME 150-2500 class ANSI B16. Flanges are furnished faced, drilled and spot faced or back faced. xlsx. 5-2017 class 150 flange dimensions. Falcone, 2 Tel. NOTE 3 For dimensions . Alternate Flange Facings. 147. 5 ANSI 150 lb Acciaio al carbonio S. 188 30. Pressure rating at atmopheric temperature is 275 psi. 40 3. Dimensions are in millimeters, except for bolts and bolt holes. 30. 92 98. CAB Worldwide offers a chart of ANSI / ASME B16. ) - Fax +39 035 670252 - www. Use in high-temperature plumbing and water supply applications up to 200° F. 1 - 1998 - Cast Iron Pipe Flanges and Flanged Fittings - Class 25 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts. Pressure Class. 5 cl 4 48 2 class 600 stainless steel flanges ansi b16. 4 D c d f BOLT HOLES 15 20 25 32 40 50 65 80 ASME B16. 5 ASME B16. 88 5/8 4 NOTE 1 Dimensions N 1, N 2 and N 3 are measured at the intersection of the hub draft angle and the back face of the flange. A105. Styles we offer include Weld Neck, Slip On, Blind, Threaded, Socket Weld, Lap Joint, Orifice Flanges, Ring, and custom flanges in sizes from 1/2″ to 203″. 1, B16. 50 1. Jun 10, 2022 · 600# B16. 6 n-D c d 6. Torque values are based on using weld-neck flanges and lubricated stud bolts with a 0. NOTE 4 Type 33; lapped pipe end without determination of thickness and height. 20mm (3/4″) Flanges. Notes: Commonly referred to as a class 150# in larger diameter. 15mm (1/2″) Flanges. 5 Class 150 Forged Flanges R O B 2 Bore size schedule Nominal Pipe Size Outside Diameter wall thickness Bore size schedule Nominal Pipe Size Outside Diameter wall thickness Bore size schedule Note: Dimensions are in inches. 060. RTJ flange dimensions are covered in ASME B16. Section 5 – Carbon Steel Pipe, Fittings, and Flanges July 2020 Page 11 – Section 5 www. Date: October 23, 2023. Sizes 1-inch through 12-inch also apply to ANSI Class 150 bronze flanges. 5 Flat Face Flange: Design For Size: ASA, ASME, DIN, PN, JIS, ANSI, BS, EN: ASME B16. Siemens Building Technologies manufactures its An American war standard entitled “Pressure Ratings for Cast Iron Flanges and Flanged Fittings, 125 lb” (ASA B16a1) was published in 1943. Size. 5 Flange Dimensions Chart Weight & Size Chart, ANSI B16 5 Class 150 slip on flange dimensions, Class 300 flange dimensions in mm. 06 in. 3. Class 250 Flange PDF (for printing). DIMENSIONS ARE IN INCHES. Title: ASMEB16. The largest opening governs the tolerance for all openings. 1 Class 125 flange is rated for 125 PSI at 353 o F. Steel Flange Dimensions. 10 and ANSI B16. 230. 47. pdf Author: Mirastart Created Date: 1/15/2019 6:10:22 PM Pressure Classes 125 flat face, and 150, 250, 300, and 600 raised face, flanged control valves are included. Flange Wall Thickness. Industrial applications and conforms fully to the required industry standards. U. It includes (a) pressure-temperature ratings, (b) sizes and method of designating openings of reducing fittings, (c) marking, (d) materials, (e) dimensions and tolerances, (f) bolting and gaskets (g) pressure testing. com. 1 and ANSI/AWWA C110/A21. Bolt Circle. 1 is a gray iron pipe flange and fitting specificaton. Bolt two same-size flanges together with a gasket to create an access point within a line. 11 SPECIAL FABRICATED FITTINGS As per spec/drawing As specified As specified FLANGES ASTM/ASME A/SA 105 (A,B OR C)* Forged Medium to High temp service application in Water, Gas, Petroleum & Mining ASME/ANSI B16. In sizes 24 in. 32. (b)- Standard bore dimensions provided. 53 standards conform to the drilling and facing of ANSI B16. Metalfit 2˝ through 12˝ Flanged Fittings are also listed by Underwriters Laboratories for fire protection service. 5 Class 300 Forged Flange PDF Bizonvej 1, Skovby, 8464 Galten, Denmark. 1 is: 1538, pt -iv & vi (pn-1. 10 • Manufacturing facility is ISO 9001:2008 • Flanged fittings made of 150# ductile iron for sizes 6” and below Nov 26, 2020 · DIMENSIONS OF CLASS 150 FLANGES (ANSI B 16. We provide ANSI, API, and AWWA pipe flanges in carbon steel, stainless steel, alloys, and chrome steel. 10 and AWWA C153/A21. d. 36 DIN flange details flange details table no. Large Diameter flanges, in sizes beyond the B16. It lists nominal pipe sizes from 26 to 96 inches along with corresponding dimensions for outside diameter, thickness, bolt circle diameter, number of bolt holes and weight. Flange Reference Chart 2019. 5mm for the raised face height For Class 600, 900, 1500, 2500 the flange thickness does not include the raised face height and approx. Ensure compliance and reliability. . Notes. 47 Note. Feb 11, 2016 · Flange - ANSI Class 125, C110, DI (in) on 11 February 2016. WELDING NECK (WN) SLIP-ON WELDING (SOW) Note 1: All weights are approximate. 54”–64” flanged fittings are covered in ANSI/ AWWA C153/A21. it FLANGE ANSI FLANGES ANSI BRIDES ANSI 29. pdf), Text File (. 12" for sizes 12"-48". 1, Class 125. Figure 7 — Dimensions of PN 10 flanges 28. Cast Iron Flanges - Stud Reference Chart The number, diameter and length of studs for cast iron flanges class 125 and 250. 11 ASTM/ASME A/SA 350 Forged Low temperature fittings for conveyance in Gas, Petroleum & Natural Gas services ASME/ANSI B16. flanges, flange alignment & new well lubricated bolts/nuts according to the national boiler code, installed in accordance with the Central Plastics Company Flange Installations Guidelines. The term “lb”, “class” and “#” are used interchangeably to designate the pressure rating of the flange. Carbon steel flanges mechanical properties and chemistry conform to ASTM. valvorobica. Flange Diameter. pipefittingweb. Flanged Fittings Class 125 & 250 Specifications • Flanged fittings UL Listed through 12” • Grey iron castings conform to ASTM A126 and ASTM A48 • Flanged fitting dimensions conform to ASME B16. b = raised face included for ANSI Class 150 - 300 b = raised face not included for ANSI Class 400 2500 . bpssg. 53. flange finish shall not be serrated. 90 0. The wedge is fully vulcanized with AVK’s own drinking water approved EPDM rubber compound. Dimensions are in inches. 5 4 39 4 1 7 class 1500 stainless steel flanges ansi b16. 1 and ISO 7005-1 also incorporates previous DIN PN rated flanging. ANSI flanges are integral components in the PVF world. For drinking water and neutral liquids to max. a. 1-2010) Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250 AN AMERICANNATIONAL STANDARD Two Park Avenue • New York, NY • 10016 USA Fittings face-to-face dimensions conform to a tolerance of ± . metric system screw threads shall be applied. 1, see Table 8. 5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. 40. Nominal Pipe Size Gasket ID Gasket OD Number of Bolt Holes Bolt Hole Diameter Flange dimensions Flange dimensions ANSI B16. Testing. flange ANSI 150 lb - Carbon steel Bride S. (a)- Bolt hole diameter 1/8 in. 5 45 class 900 stainless steel flanges ansi b16. *Diameter of bolt holes. 5 Bolt and Stud Dimensions -----14 1 ANSI B16. They are also known as Pressure Class 150 flanges. 000 1. The thickness of a 150-psi flange from which the raised face has been removed shall be no less than dimension C minus 0. Posted in Ductile Iron Flange Datasheets. 87 15. Cast Iron Flange Dimensions For 2-1/2 through 6-inch Valves Siemens Industry, Inc. 2009 •. 47 ANSI B16. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. 2 Purpose The purpose of this standard is to aid users in their piping design by providing flange, face-to-face control valve dimensions, without giving special consideration of the equipment manufacturer to be used. Author: Tina Stone Created Date: Jul 7, 2022 · What Is The Difference Between ANSI 125 And ANSI 150? The pressure rating of flange ranges from 150# to 2500#. 150lb Slip On Flange with raised face from 1/2 inch to 24 inch of B16. G. 3 Definitions Jul 25, 2022 · Marcel Piping is a manufacturer of all types of flanges even flanges that are hard to find. Cast Iron Flanges - ASME/ANSI Class 25 ASME/ANSI B16. Nominal. 2-1948. 90 60 4 x 14. 2. AVK gate valves are designed with built-in safety in every detail. O. 5 Class 150 Forged Flanges. of hole hole dia 50 165 16 125 4 19 65 185 16 145 4 19 80 200 21 160 4 19 100 220 22 180 8 19 125 250 22. 5 range, are available for special installations. Full Face Gaskets for 125/150# ANSI Flanges. ANSI 150 lb - Acero al carbono 154 24050 Zanica (Bg) Italy - Via G. 5 – ½” – 24” Forged Flanges Weight Chart. 1 is a standard for cast iron flanges and fittings, while these steel flange dimensions are provided for reference to mate Dec 20, 2021 · DOWNLOAD BS 10 Table D Flange Dimensions and Technical Drawing PDF. 609. 5 DIN EN1092 NPS Nominal Pipe Size O W Tf d Number 11/2" 125. 60. 5) (in mm) Nominal Pipe Size: Flange Dia ‘O’ Dia of Bolt Circle ‘A’ Dia of Bolt Holes ‘D’ No. In accordance with the document, the welding neck type flanges are to be forged steel, while the blind flanges can be made from either forged steel or steel plate. 5" Flange Diameter PCD No. 5-2013) 41. we at marcel also produce custom flanges. Notes: *AWWA Pressure rating at atmospheric temperature is 300 psi. 36 Flanges Dimensions. of Holes: Thickness of Flange ‘C’ Diameter at Weld Bevel: Dia of Hub ‘E’ Length Through Hub: Bore ‘B’ Dia of R/F R: Depth of Socket F: Length of Threading: S/O & S/W Y: W/N Y: L/J Y: S Dimensions are in inches. com Dimensional information for PN, ANSI and BS10 DN125 or5 inch flanges, including the flange diameter, bolt hole pcd, bolt hole size and flange thickness. 3768. Bolt Circle Diameter. 63. +39 035 4245311 (8 linee r. Flange dimensions Flange dimension guide 7 ISO 7005 (DIN) PN6 120 90 4 14 M12 16 - 8 16 PN10 140 100 4 18 M16 18 - 8 18 PN16 140 100 4 18 M16 18 - 8 - PN20 120 89 4 16 M14 13 13 10 13 PN25 140 100 4 18 M16 20 - 9 18 PN40 140 100 4 18 M16 20 - 11 18 Drilling Compatible with AS/NZS 4331, BS 4504 & DIN 2533 ANSI B16. These flanges are typically supplied with a flat face. 692. 24 Normal Peip Size 125 (Cast Iron) or 150 (Steel)(1) 250 (Cast Iron Dec 20, 2021 · DOWNLOAD BS 10 Table E Flange Dimensions and Technical Drawing PDF. We’d love to learn more about your project today! Find precise flange dimensions and weights at Texas Flange. 4 t 6. com or call toll free 1-800-248-5060. 47 Series A - Class 150, 300, 400, 600, 900 17 ANSI B16. ASME B16. AWWA C207 Flanges. Bolt hole diameter 1/8" larger than bolt diameter. FLANGES: The bolt circle and bolt holes of the above flanges match those of Class 250 flanges shown in Dimensions & tolerances in accordance with ANSI B16. See bore chart for other wall thicknesses. Flange compatibility and pressure ratings The flanges of ANSI/AWWA C110/A21. May 18, 2020 · The ANSI/MSS SP-44-2019 standard practice covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for steel pipeline flanges. QUANTITY AND SIZE OF STUD BOLTS FOR FLANGED JOINTS www. While the dimensions for the AWWA C207 flanges do tend to follow suite with ASME 125#/150# and 250#/300# class flanges on many sizes, there are sizes where Taylor-Forge dimensions have been adopted, as well as larger flange sizes (above 96”) where the flange dimensions are unique to the AWWA C207 standard. JIS 20. Note: Bore schedules with wall thickness greater than . Forged Steel Flange dimensions are per ASME B16. 36 DIN It covers evaluations and standards for the following characteristics, noted in both metric and U. 6mm) raised Face, Which is included in Thickness (C) and Length through Hub (Y) ASA 300 Class. API Flange Selector. BS 10 Table E Flange Dimensions 125: 254. Flange. 5 Application: Nuclear Power Plant Natural Gas Industry Chemical Industry Water Pipeline Industry Fabrication Industry Oil And Gas Industry: Connect Type Type: RF, FF, RTJ, LMF, SMF, LJF. 1 flangeas_125. 1-1948 and ASA B16. 1 Industry Standard. 25 30. FLANGE DIMENSIONS TABLE SIZE (DN) 125 (5″) ① AS2129 still in use but now only covers Table D to H. 1797. 6) size flange dia flange thickness pcd no. 63K (*BRONZE FLANGES : ANSI 150&300) 5. Flanges - ANSI B16. 1 class 250 cast iron pipe and flanged fittings. 1 Class 125 flanges. 47 ASME B16. S. Common center lines are marked to eliminate difficulty in installaton. 9. Tolerances. 5 Class 1500 flange dimensions in mm. 10. 30. Title: SS Ansi Flanges Dimensions Created Date: 12/18/2006 2:37:10 PM Nov 27, 2020 · class 1500 flange dimensions. 5 Forged Flanges. ANSI 150 lb - Acier carbone Brida S. See also: ANSI B16. 50 749. 1 standard. 5 class 150 forged flanges measurements. 88 5/8 4 Texas Flange has been in the business of precision flange manufacturing since 1986, and we’re confident we can help you find a solution more quickly, affordably, and with greater expertise than the competition. com Corporate Office: 3301 Zachary Avenue Shafter, CA 93263 661-589-9141 Fax 661-589-3739 sales@bpssg. These and other standards are referenced throughout this section either by the full ANSI/AWWA designation or by only the AWWA numbering, such as AWWA C110 Cast Iron Flange Dimensions. Dimensions. refer to NOTE 1 of 5. pdf - Free download as PDF File (. raised face included in dimensions Q, Y and YY. com Email: wellgrow@pipefittingweb. 5 150-psi standard for steel flanges. 9 4 5⁄ 8˝ - 15. Weights are based on manufacturer’s data and are approximate. 5, AND B16. Pipe's FULL FACE FLANGE-TYTE™ Gaskets or RING FLANGE-TYTE™ Gaskets (4" through 64"size) are recommended for all flanged joints. atlassteels. , Class 125) generally represents the maximum working pressure at the temperature of saturated steam at that pressure. RTJ Face Dimensions and Flange Tolerances. Lawrence Moss. 2 ASME B16. ANSI standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes NPS 1/2 Quick Reference Flange Chart: PN6 5K 125 Lbs PN10 10K 150 Lbs PN16 16K 300 Lbs PN25 20K 300 Lbs PN40 40K 600 Lbs PDF Mechanical Engineering Plumbing PDF) Bolt stud dimensions for ansi flanges pdf ali taher The Flange Adapter is used to connect flanged pipe or fittings with Class 125 flanges to Class 250 flanges of ANSI B16. 5”. we have listed below all possible flanges dimensions chart, weight chart, and diagrams (drawings) in pdf format. 4mm must be added to D dimension. 1. 75 50 4 x 11. 14/DIN F4 with ANSI 125/150 drilling. **Bolt hole diameter 1/8 in. During a dimensional inspection of the RTJ flange, you should check for. The flanges of AWWA C110/A21. The principal standard covering flanged fittings is ANSI/AWWA C110/A21. Cast Iron Soil Nov 27, 2020 · ANSI B 16. 5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16. of Holes: Thickness of Flange ‘C’ Diameter at Weld Bevel: Dia of Hub ‘E’ Length Through Hub: Bore ‘B’ Dia of R/F R: Depth of Socket F: Length of Threading: S/O & S/W Y: W/N Y: L/J Y: S/O Website: www. Description This Technical Bulletin shows the standard dimensions for ANSI Class 125 and Class 250 flange valves as defined in ANSI standard B16. Included are: (3) flanged fittings with rating class designation 400, 600, 900, and 1500 in This Standard for Classes 25, 125, and 250 Cast Iron Pipe Flanges and Flanged Fittings. 5 class 300 stainless steel flanges ansi b16. Height of Raised Face (RF) in CLASS 600 is 2 mm at NPS 1 – NPS 3, and 7 mm at NPS 4 – NPS 24. Visit www. 5 150 115 88. 5 DIMENSIONS OF CLASS 300 FLANGES in mm: Nominal Pipe Size: Flange Dia ‘O’ Dia of Bolt Circle ‘A’ Dia of Bolt Holes ‘D’ No. 16 ANSI 125 ANSI 150 250 ANSI 300 400 600 ANSI 900 D c h d t n-g h 1. 1-2015 (Revision of ASME B16. All Dimension are in millimeter • Flanges except lap joint will be furnished with (1. in to 2500lb/sq. 5 Class 150 Flanges 3/4 3. ansi b16. 5 4 46 0 class 1500 stainless steel flanges ansi b16. AVAILABLE IN PACKAGES. Dimension B corresponds to the pipe inside diameter. Class 400 socket weld flanges may be provided in NPS 1/2 to 21/2 using Class 600 dimensions. These flanges have the same OD and drilling as ANSI/ASME B16. units of measure: Pressure-temperature ratings. 5 index class 900 stainless steel flanges ansi b16. Download Free PDF. ASA Size Chart : 1/2″ (15 NB) To 48″ (1200NB) Standards : The document provides specifications for ANSI B16. of Bolt Holes ANSI 125/150: 10" (254mm) 8 1/2" (216mm) 8: 3/4" (19mm) 7/8" (22mm) 7 5/ The ASME B16. Weld neck flanges NPS 3 and smaller are identical to Class 300 flanges except for bolting and may be used for such service. 88 KB - Flange dimensions for Class 125 and 250 flanges. The Notes shown on this page also relate to the tables on the following pages. 8. 6 g h t 1. 020. Materials. 6. The Flange Adapter is rated for 250 psi Light Weight Slip-on flanges, drilled to Class 125 ANSI Standards but of lighter construction than the regular slip-on type, are available for low-pressure systems. Concerning boltings ( ) used for those flanges shown below table. FLANGE DIMENSIONS – ASME/ANSI B16. 500 190. Flange dimensions Flange dimensions ANSI B16. 50 RTJ Flange Dimensions – Class 150 to Class 2500. 86. 6: 17. Pipe. 5: 141. The Flange Adapter is used to connect flanged pipe or fittings with Class 125 flanges to Class 250 flanges of ANSI B16. 1 Class 125 slip on and weldneck flanges. max. 5. Table C now obsolete, Table J to T now replaced by AS4331. 1 - 1998 - Cast Iron Pipe Flanges and Flanged Fittings - Class 125 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts: Cast Iron Flanges - ASME/ANSI 125 lb. 82. 10 and C153/A21. 5 210 8 19 150 285 23 240 8 23 200 340 24. Center-to-center of adjacent bolt holes. slip on flange with raised face (sorf flange), sorf flange dimension from 1/2 inch to 96 inch, pressure rating from 150lb/sq. in, we usually offer ANSI/ASME/DIN etc. Flanged gate valve EN 558-2 S. Note: Tolerances marked with an * are Kerkau Tolerances. 6-1. A complete review of the 125-lb and 250-lb standards resulted in new editions of each: ASA B16. Standard Flange with sorf flange dimension. The Flange Adapter is rated for 250 psi SVF ANSI B16. Article de vulgarisation de la thèse soutenue le 19 novembre 2021à l’Université de Genève. The standard includes flanges with rating class designations 150, 300, 400, 600, 900, 1500, and 2500 in sizes NPS 1/2 Notes. 030. 88 0. Industries like chemical processing, food processing, and petrochemical processing, cannot do much without these flanges. Values quoted assume 40S/Standard wall thickness. Marking. 1 class 125 cast-iron flanges. Can be furnished with a raised face. 5 - 1996 Pipe Flanges and Flange Fittings standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. *Pressure ratings from AWWA table 4 Class E. ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity. 0: 209. DIN 140 110 4 x 14 165 125 4 x 18 165 125 4 x 18 165 125 4 x 18 165 125 4 x 18 ANSI, DIN, and JIS Flanges. 94 KB - Flange reference chart for ANSI, DIN, JIS dimensions. These flanges have the same diameter and drilling as ANSI/ASME B16. 15 friction factor. ‘O’. CPVC Pipe Flanges for Hot Water. DIMENSIONS ARE IN INCHES Bolt hole diameter 1/8" larger than bolt diameter ANSI/ASME B16. Steel flanges are occassionally produced to mate up with Class 125 and Class 250 valves These flange dimensions are provided for reference even though specification does not cover steel. and smaller they also match ANSI/ASME B16. Iron Flange dimensions are per ASME B16. An American war standard entitled “Pressure Ratings for Cast Iron Flanges and Flanged Fittings, 125 lb” (ASA B16a1) was published in 1943. 6. They connect the pipes, valves, and various other fittings within a pipeline or assembly. Flat face flanges may be provided at full thickness, C, or with raised face removed (the latter is nonstandard). Kerkau. The fact is that 150 lb has no relation to 150 psi and so does the 300 or 600 lb does not correlate to 300 or 600 psi Flangia slip-on ASME B16. do ok hz bt xe qx ar xl ab pj