This standard replaces JB 79-59. JB/T 79.4-1994 Ring connection surface integral cast steel pipe flange JB/T79.4-1994 standard download and decompression password: www.bzxz.net
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Machinery Industry Standard of the People's Republic of China Ring connection surface integral cast steel pipe flange Subject content and scope of application JB/T 79. 4 Replaces JB7959|| tt | ~20.0MPa ring connection surface integral cast steel pipe flange. 2 Reference standard JB/T74 pipeline flange technical conditions 3 The type and size of the flange should comply with the regulations in Figure 1 and Table 1~Table 4. X Figure 1 Note: 1) The height of the protruding part is equal to the depth E of the trapezoidal groove, but is not limited by the tolerance of dimension F. The technical requirements for the fully flat 4-flange with the outline shown in the dotted line are allowed to be in accordance with JB/T74. 5 The nominal pressure of the flange and the maximum allowable operating pressure at different temperatures are in accordance with the regulations in Appendix B of JB/T74. The Ministry of Machinery Industry of the People's Republic of China approved the implementation of 7995-10-01 on 1994-12-09 349 nominal tongzong DN 15| |tt||20 25 32 4 50 G5 80 1.030||tt ||125 i50 (175) 200 (225) 250 300 339| |tt||400 500 Flange outer diameter D Series 1/Series 2 105 130/125 1403/135 155/150 170/165 180/175 205/200 215/210|| tt||250 295 3457340 3757370 415/405 440/430 470 530 ) 5007595 670) 800 350 connect Table 1 continue Bolt hole Center circle Diameter K 75 90 100 110||tt| |125 135 160 170 200 240 280 310 345 370 400 460 525 585 705 JB/T 79.4--94|| tt||PN6.3MPa ring connection surface integral cast steel pipe flange size ruler Bolt hole diameter t Series】/Series 2 14||tt ||18 18 23 23 23 23 23 26/25||tt ||30 34 34 36/34 36/34 36/41 36/41||tt ||41 42/48 48/54 Quantity 8 12 12 12| |tt||12 Double-ended stud Thread Th, Series 1/Series 2 MI2 M16 M16 M20 M20 M20 M20 M20 M24/M22 M27 M30 M30 M33/M30 M33/M30 M33/M36 16 16 16|| tt||20 M33/M36 M36 M39/M42 M45/M48 Sealing surface ruler F|| tt||15535 6845 9 7850 182 65 9575 E||tt| |6.50.8 6.50.8 6.3 method thickness 18 2 0. 8 16.5,0.8 9 22 2- 16.50.824 1051 851 12 1301102| |tt||140115:12 1681115112 202175 12 2-1020512 27023512 30126512 32528012 352320 12 41237512 14751420 525 480 12 8| |tt||8 8 8 X . ().8 0.8 26 28 30: 332 0.8 0.8 36 0.8 .8 0.8 38 法 33 61 68 80 11|| tt||1 nm amount 1 18 18 2 20||tt| |2 128 162 181 210 421239 44 268 10.||tt| |46 0.#18 3. 8 10.8160 12 80.8 64059011 10| |tt||heart 66 301 326 8.1 4.42 500 70510||tt ||! 21 26 32 31 0 3 38 38|| tt||2 46 30 55 11 1 18 公称||tt| |通很 DN 15 20 25 32 40 50 65 80 100 125 150 (175) 200 (225)||tt ||250 300 350 400 艺外外很 D 系系1/系系2||tt| |105 130/125 140/135 155/150 170/165 195 220||tt| |230 265 315/310 355/350 380 430 470 505/500 585 655 715 连 JB/T79.4--94 表2PN10.0MPa环电视面推行滨钢管艺机分报 螺梓孔 中心圆 直袍 K 75 90||tt| |100 110 125 145 170 180 210 250 290 320 360 400 430 500 560 620 尺守| |tt||軺梓孔化合 1 系到1/系列2 14 18 18 23|| tt||23 26/25 26/25 26/25 30 34 3.1||tt| |34 36/41 41 41 42/48 48/54 48/54||tt| | quantity 4 4 8 8 8 8 12 12 12 12 12 双头軺柱 軺纹Th. 系系1/系系2 M12 M16 M16 M20 M20 M24/M22 M24/M22 M24/M22| |tt||M27 M30 M30 M30 M33/M36 M36 M36 16| |tt||16 16 M39/M42 M45/M48 M45/M48 d 55||tt ||68 78 工业而化学 E 35 45 50 18265||tt ||95175 112 85 9 9 12 138111012 14811512 172145 112 210|17512 250205 280|235 312|265 352280 382320| |tt||12 12 12 12 12 144237512 498420 558480||tt ||17 17 6.5 6.5 6.5 6.5 6.5 心 8 广x 艺 小明 0.8120 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 22 . 26 28| |tt||32 34 mm 兰骑 法 R 45 61|| tt||68 9() 94 115 132 38 160 03. 8 0.8 03. 8 810.8 0.8 0.8 0.8 11 11 0.8 0. 8 421189 461 222 481251 541284 56 313 60346| |tt||70 76 80 408 466 520 15 17||tt ||18 20 4 4 4 22 4 2 26 30 32 36 38 42 44 18 54| |tt||58 5 6 8 8 11 12 Gt||tt ||112 351 公称 通很 DN 15 20 25||tt| |32 1 50) 65 80 10 123 150 (175) 200 (225) 250 300 352 蛋外很 系系2 110 [30 140 165 175 215 245 260 300 335 390 460 480 545 580 665|| tt||连 JB/T79.4··94 表3PN16.0MPa 100 115 125 165 190 205 240 285|| tt||318 380 400 450 485 570 尺 螺栓孔化合|| tt||系列之 18 23 23 25 27 25 30||tt ||30 34 41 41 48 48 54 54 54 子 quantity 4 4 18 8 8 8| |tt||12 12 12 12 12 16 双头螺柱 螺纹Th. 系列2 M16 M20 M20 M22 M24 M22 M27 M27 M30 M36 M36 M42 M42 M48 M48| |tt||M48 工业面包装 E 5235916.5 6245 72 50 8565| |tt||9275 T: 法 原度 mm 领 法 .| |tt||N 2 49 0.826 9 16.5° 9 1329512|| tt||15211012 168:13012 200|160|12 238190 12 6.5 6.5||tt| |6.5 8 8 8 8 114 270205 10 325255 3451275 17 17 39030517 11 1 4253301711 510138023|| tt||14 0.828 0.8130 0.8 0.8 32 s 6||tt| |76 88 36 102 (3. 81 44 0.846 0.8 0.8 .8 .8 0.8 48||tt| |60 66 74 131 148 172 213 246 287 7813161 0.882 188 0. 8 100 345 578 452 R 17 20 22| |tt||24 28 5 33 34 36 14 4.8 56|| tt||8 110 110 110 58 0 60 76||tt| |10 1 110 公称 通很 DN 15 20 25 32 40 50 65 80 100 125 150| |tt||(175) 200 (225) 250 蛋外很 D 系统2| |tt||120 130 150 160 170 210 260 290||tt ||360 385 440 475 535 580 670 连 表4 接 螺梓孔 中心圆 diameter K 82 90||tt| |102 115 124 160 203 230 292 318 360 394 440 483 572 JB/T 79.4--94 PV20.0MPa管艺机北京尺 螺梓孔化合 1. 系列2 23 23 25 25 27 25 30 34 41 41 48 48| |tt||54 58 58 寸 quantity 4 4 4||tt ||4 4 8 8 8 12 12 12 12 12 16 双头軺柱 軺纹Th. 系列2 M20 M20| |tt||M22 M22 M24 M22 M27 M30 M36 M36||tt ||M42 M42 M48 M52 M52 工业面包装 P 55||tt ||62 买0 45 17250 8565 90 9 Ernux||tt| |6. 5 6. 5 6.5 16.5 759 6.5 12895 12 16511012Www.bzxZ.net 190160112| |tt||245190 12 270205 305240 1340275 3801305 8 0.8||tt ||0.8 (0.8 0.8 0.8 0.8 0.8 0.8 Flange Thickness 26 28 30 32 34 40 48 54 0.8 66 1410 0.8 17 17 11| |tt||11 11 0.8 0.8 0.8 418330171110.8 30838023 141||tt ||0.8 761 mm Flange neck —Saax R Nmu 51|| tt||60 67 78 90 108 137 160 204||tt| |237 270 82 84 301 92340 1100377 110 448 18 20 21 23 25 29 36 40|| tt||52 weak 6 60 63 5 5 5 5||tt ||8 8 ao 10 10 10 7010 76 94 | | tt | | to | Standard flange sizes are interchangeable, and new product designs should give priority to Series 1 sizes. Additional notes: This standard is proposed and administered by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry and Harbin Boiler Factory. The drafters of this standard are Li Junying and Wu Zhenjia. 353 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.