HG 20623-1997 Large Diameter Steel Pipe Flange (American System) HG20623-1997 Standard download decompression password: www.bzxz.net
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Large True Diameter Steel Pipe Flanges (American System) HG 20623—97 1 Subject Content and Scope of Application This standard specifies the types, dimensions, technical requirements and relevant use regulations of large diameter steel pipe flanges (American System. This standard is applicable to large diameter steel pipes with nominal pressure PN2.0MPa (Clas150) ~ 15.0MPa (Clas990) Method 379 HC 20615 HG 20624 JG20625 HG20626 HG20634 HG20635 Referenced standards 《Types and parameters of steel pipe flanges (American system)》《Technical conditions for steel pipe flanges (American system)》《Pressure-temperature grades of steel pipe flanges (American system)》《Welding joints and groove dimensions of steel pipe flanges (American system)\《Fasteners for steel pipe flanges (American system)》《Selection regulations for steel pipe flanges, seals and fasteners (American system)》Flange sealing surface types and applicable scope||t t||3.0.1 The sealing surface type of the flange is the raised face (RF), and its size and selection shall comply with the provisions of Chapter 6 and Chapter 8 of HG20615. When PN≤5.0MPa(Class300), the raised platform height f1 of the raised face flange is included in the flange thickness C; when PN11.0MPa (Cla85600), the raised platform height f.m of the raised face flange is included in the flange thickness C. 3.0.2 The applicable pressure and diameter range of large diameter flanges shall comply with the provisions of Table 3.0.2. Table 3.2 Applicable range Cover type Raised face (RF) (Class 150) Nominal pressure PN, MPa(Class) (lass sco) N6501500 (CHass 6CO) (Class sro) DN650900 Flange size Flange size is as specified in Figure 4-1 and Tables 41~4. Table 4-1PN2.0MPa(Class150) Large diameter steel flange Table 4-2PN5.0MPa(Class300) Large diameter steel pipe flange Table 4-3PN11.0MPa(Cias600) Large diameter steel pipe flange Table 1-1PN15.0MPa(Class 900) Large diameter steel pipe flange The flange inner diameter B is determined by the steel pipe wall thickness. The user should indicate the wall thickness or grade of the steel pipe in the order and marking. 382 PN5.0MPa Raised face (RF) PN11.0MP Sinus face (RF) Figure 4-1 Large diameter steel pipe flange (WN) Nominal diameter 12221392 Jiang: Flange inner diameter Please order according to the requirements. FN2.UMTa(Class 150) Large diameter steel pipe flange connection size Screw hole center diameter Table 4-2 Nominal diameter Note: Nominal diameter Please order according to the requirements. Bolt hole Bolt hole PV5.0MPa(Claxy300)Large diameter steel pipe flange connection size Screw inspection hole Center diameter Screw light hole Butterfly bolt hole Flange neck Nominal near diameter Table 4-3 Note method "Inner diameter according to Jiang goods requirements. PN11.0MIPn(CInss 60b) Connection size of large diameter steel pipe flange Butterfly bolt hole Center circle diameter Screw hole Bolt hole M12×3 Table 4—4PN15.#MPa(Class900) Nominal diameter of large diameter steel pipe flange Sum: Flange inner diameter according to the requirements of the goods Center circle diameter of the bolt hole Connection size Screw hole Bolt hole M70×3 M76×3 Honglan neck Flange neck 5 Technical requirements The technical requirements of the flange shall be in accordance with the provisions of HG20624. 6 Maximum non-impact working pressure Nominal pressure of the flange The maximum non-impact working pressure at different temperatures shall be in accordance with the provisions of HG20625. 7 Welding joints and grooves Method and welding joints and grooves of steel pipes shall be in accordance with the provisions of HG20626. 8 Fastener length The length of the fasteners (bolts, studs) used 1 shall be in accordance with the provisions of Appendix A of HG20634, and the matching provisions The matching of flanges, gaskets and fasteners shall be in accordance with the provisions of HG20G35. 10 Marking The marking of flanges shall be in accordance with the provisions of HC20615. bzxz.net Additional notes: The unit proposing, editing unit and main drafter of this standard Proposing unit: Chemical Process Piping Design Technology Center Station of the Ministry of Chemical Industry Equipment Design Technology Center Station of the Ministry of Chemical Industry Editor: Equipment Design Technology Center Station of the Ministry of Chemical Industry Main drafter: Ying Daoyan Yu Jun Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.