This standard specifies the sealing surface of the marine flange connection size. This standard applies to the general purpose various pipeline flange connection sizes and sealing surface shapes and sizes with a nominal pressure of no more than 6.4MPa and a nominal diameter of 10~2000mm for ship pipelines. GB 2501-1989 Marine flange connection size and sealing surface (four-digit) GB2501-1989 standard download decompression password: www.bzxz.net
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UDC 621.643.4 : 629.4 National Standard of the People's Republic of China GB10745~10751-89 GB2501~2508—89 Moon flange (Four-position) Marine pipe flanges 1989-03-31 Issued 1989-1201 Implementation State Administration of Technical Supervision IssuedwwW.bzxz.Net W.National Standard of the People's Republic of China Marine pipe flanges-Conpactiondimensions and nating This standard adopts the standards 1S02084-1974 "General pipeline method", IS2441-1975 "Sectional pipeline method for pipe connection and applicable specifications" and GB 2501--89 GR2501-81 Metric system - Fitting dimensions and this standard specifies the flange connection dimensions and sealing dimensions. This standard is suitable for various pipe connections with a nominal diameter of 10 to 2000 mm, pressure not exceeding 6.4 MPa, and a nominal diameter of 10 to 2000 mm. This standard is also suitable for the connection between marine equipment and pipes or accessories. No. 2 D—Nominal diameter, machine diameter, nm; —diameter of the center of the grid hole, mm dr—bolt diameter, mn : Th.—thread diameter, mn, —nominal force, MPas —number of holes, pcs. 3 Circular reverse connection size! And Table 1 Zhongquan Shipbuilding Industry Corporation 1988-03-27 approved 1989-12-01 implementation W. Nominal diameter 13751320 15751520 17901730 19901930 21902130 GB 2501—89 .i Th. :130100 140110 190158 zF0170 240200 265225 295255 3202B0 345305 540495 595550 645600 7551705 1075102u 175120 3214051340 361638j156 18301760 204519793 48226 52180 Pn ,MPa | 405H5 840770 1323950 1125:1050 12557u42 14851390 16851590 1930820 213012020 CB 2501-89 Pn, MFa 330280 7306G0 2345223062 4201355 660585 345280 375316 800705 Oval flange connection size shall be as per Figure 2 and Table 2, nominal diameter GB 2501--89 Nominal injection force PN=0.BMPa 5 The shape and size of the convex surface of the flange sealing surface shall be as per Figure 3 and Table 3. Figure 3 W. Nominal diameter GB 2501—89 Nominal pressure PN, Diameter of nominal pressure PnF2 Note;) The size is the maximum value. 2) 45” can be used as the example. Radius 7.8 GB 2501—89 The shape and size of the groove surface of the seal surface shall be in accordance with Figure 4 and Table 4D Nominal diameter Nominal pressure PN = 4.0, 6.4MP± Additional remarks: This standard was proposed by the Sixth Institute of China State Shipbuilding Corporation. This standard is under the jurisdiction of China Shipbuilding Corporation. This standard was drafted by China Shipbuilding Corporation. The main drafters of this standard are Yu Weihai, Sun Jingming and Wu Shaozeng. D, W. 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.