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                      |     本标准等效采用国际标准ISO6162《液压分体法兰》与美国机动工程师协会标准SAEJ518和德国西马克公司标准SN532,其尺寸可以互换。
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                      | 1、A型--附接法兰的型式和尺寸(见图1表1)
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                | 表1 
                    
                      | 公称通径 | 工作压力 MPa  max
 | Do max
 | d max
 | A | T | L | M | 螺钉 GB70(8.8)
 | O型密封圈GB3451.1 |  
                      | mm | in |  
                      |  3000PSI法兰 |  
                      | 15 | 1/2 | 21 | 20 | 14 | 17.5 | 38.1 | 30 | 24.3 | M8×25 | 19×3.55 |  
                      | 20 | 3/4 | 21 | 30 | 20 | 22.3 | 47.6 | 35 | 32.2 | M10×30 | 25×3.55 |  
                      | 25 | 1 | 21 | 38 | 28 | 26.2 | 52.4 | 40 | 38.5 | M10×30 | 32.5×3.55 |  
                      | 32 | 11/4 | 21 | 42 | 33 | 30.2 | 58.7 | 45 | 43.7 | M10×35 | 37.5×3.55 |  
                      | 40 | 11/2 | 21 | 48 | 42 | 35.7 | 69.9 | 50 | 50.8 | M12×35 | 47.5×3.55 |  
                      | 50 | 2 | 21 | 60 | 52 | 42.9 | 77.8 | 60 | 62.8 | M12×35 | 56×3.55 |  
                      | 65 | 21/2 | 17.5 | 76 | 65 | 50.8 | 88.9 | 70 | 74.9 | M12×40 | 69×3.55 |  
                      | 80 | 3 | 14 | 89 | 81 | 61.9 | 106.4 | 80 | 90.9 | M16×45 | 85×3.55 |  
                      | 100 | 4 | 3.5 | 114 | 106 | 77.8 | 130.2 | 80 | 115 | M16×50 | 112×3.55 |  
                      | 125 | 5 | 3.5 | 140 | 132 | 92.1 | 152.4 | 80 | 140.5 | M16×55 | 136×3.55 |  
                      |  6000PSI法兰 |  
                      | 15 | 1/2 | 41 | 20 | 14 | 18.2 | 40.5 | 40 | 24.6 | M8×30 | 19×3.55 |  
                      | 20 | 3/4 | 41 | 30 | 20 | 23.8 | 50.8 | 45 | 32.5 | M10×35 | 25×3.55 |  
                      | 25 | 1 | 41 | 38 | 28 | 27.8 | 57.2 | 50 | 38.8 | M12×40 | 32.5×3.55 |  
                      | 32 | 11/4 | 41 | 42 | 33 | 31.8 | 66.7 | 55 | 44.5 | M14×45 | 37.5×3.55 |  
                      | 40 | 11/2 | 41 | 48 | 42 | 36.5 | 79.4 | 60 | 51.6 | M16×50 | 47.5×3.55 |  
                      | 50 | 2 | 41 | 60 | 52 | 44.5 | 96.8 | 70 | 67.6 | M20×60 | 56×3.55 |  
                      | 65 | 21/2 | 32 | 89 | 65 | 58.7 | 123.8 | 75 | 89.5 | M24×8 | 69×3.55 |  
                      | 80 | 3 | 32 | 114 | 81 | 71.4 | 152.4 | 80 | 114.5 | M30×100 | 85×3.55 |  | 
              
                | 2、B型--连接法兰的型式和尺寸(见图2和表2)
 
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                | 表2 
                    
                      | 公称通径 | 工作压力 MPa  max
 | Do max
 | d max
 | A | T | L | M | 螺母 GB6170
 | 螺钉 GB70(8.8)
 | O型密封圈GB3451.1 |  
                      | mm | in |  
                      |  3000PSI法兰 |  
                      | 15 | 1/2 | 21 | 20 | 14 | 17.5 | 38.1 | 60 | 24.3 | M8 | M8×40 | 19×3.55 |  
                      | 20 | 3/4 | 21 | 30 | 20 | 22.3 | 47.6 | 70 | 32.2 | M10 | M10×40 | 25×3.55 |  
                      | 25 | 1 | 21 | 38 | 28 | 26.2 | 52.4 | 80 | 39.5 | M10 | M10×45 | 32.5×3.55 |  
                      | 32 | 11/4 | 21 | 42 | 33 | 30.2 | 58.7 | 90 | 43.7 | M10 | M10×45 | 37.5×3.55 |  
                      | 40 | 11/2 | 21 | 48 | 42 | 35.7 | 69.9 | 100 | 50.8 | M12 | M12×50 | 47.5×3.55 |  
                      | 50 | 2 | 21 | 60 | 52 | 42.9 | 77.8 | 120 | 62.8 | M12 | M12×50 | 56×3.55 |  
                      | 65 | 21/2 | 17.5 | 76 | 65 | 50.8 | 88.9 | 140 | 74.9 | M16 | M16×60 | 69×3.55 |  
                      | 80 | 3 | 14 | 89 | 81 | 61.9 | 106.4 | 160 | 90.9 | M16 | M16×70 | 85×3.55 |  
                      | 100 | 4 | 3.5 | 114 | 106 | 77.8 | 130.2 | 160 | 115 | M16 | M16×80 | 112×3.55 |  
                      | 125 | 5 | 3.5 | 140 | 132 | 92.1 | 152.4 | 160 | 140.5 | M16 | M16×80 | 136×3.55 |  
                      |  6000PSI法兰 |  
                      | 15 | 1/2 | 41 | 20 | 14 | 18.2 | 40.5 | 80 | 24.6 | M8 | M8×45 | 19×3.55 |  
                      | 20 | 3/4 | 41 | 30 | 20 | 23.8 | 50.8 | 90 | 32.5 | M10 | M10×50 | 25×3.55 |  
                      | 25 | 1 | 41 | 38 | 28 | 27.8 | 57.2 | 100 | 38.8 | M12 | M12×65 | 32.5×3.55 |  
                      | 32 | 11/4 | 41 | 42 | 33 | 31.8 | 66.7 | 110 | 44.5 | M14 | M14×70 | 37.5×3.55 |  
                      | 40 | 11/2 | 41 | 48 | 42 | 36.5 | 79.4 | 120 | 51.6 | M16 | M16×80 | 47.5×3.55 |  
                      | 50 | 2 | 41 | 60 | 52 | 44.5 | 96.8 | 140 | 67.6 | M20 | M20×100 | 56×3.55 |  
                      | 65 | 21/2 | 32 | 89 | 65 | 58.7 | 123.8 | 150 | 89.5 | M24 | M24×120 | 69×3.55 |  
                      | 80 | 3 | 32 | 114 | 81 | 71.4 | 152.4 | 160 | 114.5 | M30 | M30×140 | 85×3.55 |  | 
              
                | 3、其它连接型式见图3~图6,相关尺寸见表1和表2。
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                | 图3  C型--不带接管的连接法兰
 | 图4  D型--带法兰盖的连接法兰
 | 图5  E型--带法兰的附接法兰
 | 图6  F型--不带接管的附接法兰
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                      | 法兰尺寸见图7和表3
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                | 表3 
                    
                      | 公称通径 DN
 | 工作压力 MPa
 | A | T | M | L1 | L3 | L4 | L5 | L6 | L7 | d1 | d2 | R |  
                      |  3000PSI法兰 |  
                      | 15 | 21 | 17.5 | 38.1 | 24.3 | 54 | 22 | 8 | 19 | 13 | 6.2 | 9 | 31 | 8 |  
                      | 20 | 21 | 22.3 | 47.6 | 32.2 | 65 | 25 | 10 | 22 | 14 | 6.2 | 11 | 38.9 | 9 |  
                      | 25 | 21 | 26.2 | 52.4 | 38.5 | 70 | 28.5 | 12 | 22 | 14 | 7.5 | 11 | 45.3 | 9 |  
                      | 32 | 21 | 30.2 | 58.7 | 43.7 | 80 | 35.5 | 14 | 24 | 16 | 7.5 | 11 | 51.6 | 10 |  
                      | 40 | 21 | 35.7 | 69.9 | 50.8 | 94 | 40.5 | 17 | 25 | 16 | 7.5 | 13.5 | 61.1 | 12 |  
                      | 50 | 21 | 42.9 | 77.8 | 62.8 | 102 | 47.5 | 20.5 | 26 | 16 | 9 | 13.5 | 72.3 | 12 |  
                      | 65 | 17.5 | 50.8 | 88.9 | 76.9 | 115 | 49.5 | 24.5 | 38 | 19 | 9 | 13.5 | 84.9 | 13 |  
                      | 80 | 14 | 61.9 | 106.4 | 90.9 | 135 | 64.5 | 30 | 41 | 21 | 9 | 17.5 | 102.4 | 14 |  
                      | 100 | 3.5 | 77.8 | 130.2 | 115 | 163 | 72.5 | 38 | 35 | 24 | 10.7 | 17.5 | 127.8 | 16 |  
                      | 125 | 3.5 | 92.1 | 152.4 | 140.5 | 184 | 81.5 | 45 | 41 | 30 | 10.7 | 17.5 | 153.2 | 16 |  
                      |  6000PSI法兰 |  
                      | 15 | 41 | 18.2 | 40.5 | 24.6 | 56 | 23 | 8 | 22 | 16 | 7.2 | 9 | 32.5 | 8 |  
                      | 20 | 41 | 23.8 | 50.8 | 32.5 | 71 | 29 | 11 | 28 | 19 | 8.2 | 11 | 42 | 10 |  
                      | 25 | 41 | 27.8 | 57.2 | 38.8 | 81 | 34 | 13 | 33 | 24 | 9.0 | 13.5 | 48.4 | 12 |  
                      | 32 | 41 | 31.8 | 66.7 | 44.5 | 95 | 38 | 15 | 38 | 27 | 9.8 | 15.5 | 54.8 | 14 |  
                      | 40 | 41 | 36.5 | 79.4 | 51.6 | 113 | 46.5 | 17 | 43 | 30 | 12.0 | 17.5 | 64.3 | 17 |  
                      | 50 | 41 | 44.5 | 96.8 | 67.6 | 133 | 56 | 21 | 52 | 37 | 12.0 | 22 | 80.2 | 18 |  
                      | 65 | 32 | 58.7 | 123.8 | 89.5 | 175 | 74 | 28 | - | 45 | 20.0 | 26 | 108.5 | 25 |  
                      | 80 | 32 | 71.4 | 152.4 | 114.5 | 215 | 88 | 35 | - | 55 | 25.0 | 32 | 132.5 | 31 |  | 
              
                | 焊接头和法兰盖的型式和尺寸见图8~图10和表4
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                | 图8  不带O型密封圈的焊接头 | 图9  带O型密封圈的焊接接头 | 图10  带O型密封圈的法兰盖 | 
              
                | 表4 
 
                    
                      | 公称通径 DN
 | 工作压力 MPa
 | d1 | d2 | d3 max
 | L1 | L2 | L3 | 推荐管子尺寸 |  
                      | (A) d4×S
 | (B) d4×S
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                      |  3000PSI法兰 |  
                      | 15 | 21 | 30.1 | 24 | 14 | 30 | 13 | 6.8 | 20×2.5 | 20×30 |  
                      | 20 | 21 | 38.1 | 31.5 | 20 | 35 | 14 | 6.8 | 25×3.0 | 25×3.0 |  
                      | 25 | 21 | 44.4 | 38 | 28 | 40 | 14 | 8 | 30×3.0 | 30×4.0 |  
                      | 32 | 21 | 50.8 | 43 | 33 | 45 | 16 | 8 | 38×3.0 | 38×4.0 |  
                      | 40 | 21 | 60.3 | 50 | 42 | 50 | 16 | 8 | 48×2.6 | 48×5.0 |  
                      | 50 | 21 | 71.0 | 62 | 52 | 60 | 16 | 9.6 | 60×2.9 | 60×5.6 |  
                      | 65 | 17.5 | 84.1 | 74.5 | 65 | 70 | 19 | 9.6 | 76×2.9 | 76×7.0 |  
                      | 80 | 14 | 101.6 | 89 | 81 | 80 | 21 | 9.6 | 89×3.2 | 89×3.6 |  
                      | 100 | 3.5 | 127 | 114 | 106 | 80 | 24 | 11.3 | 114×3.6 | 114×3.6 |  
                      | 125 | 3.5 | 152.4 | 140 | 132 | 80 | 30 | 11.3 | 140×4.0 | 140×3.6 |  
                      |  6000PSI法兰 |  
                      | 15 | 41 | 31.7 | 24 | 14 | 40 | 16 | 7.8 | 20×3.0 |  |  
                      | 20 | 41 | 41.3 | 32 | 20 | 45 | 19 | 8.8 | 25×4.0 |  |  
                      | 25 | 41 | 47.6 | 38 | 28 | 50 | 24 | 9.5 | 30×5.0 |  |  
                      | 32 | 41 | 54.0 | 44 | 33 | 55 | 28 | 10.3 | 38×6.0 |  |  
                      | 40 | 41 | 63.5 | 51 | 42 | 60 | 30 | 12.6 | 48×8.0 |  |  
                      | 50 | 41 | 79.4 | 67 | 52 | 70 | 37 | 12.6 | 60×10.0 |  |  
                      | 65 | 32 | 108 | 89 | 65 | 75 | 45 | 20.5 | 76×12.5 |  |  
                      | 80 | 32 | 132 | 114 | 81 | 80 | 55 | 25.5 | 89×14.2 |  |  | 
              
                | 标记示例:公称通径 40mm,  A型6000PSI系列法兰:
 法兰  A  40-6      JB/ZQ          
                  4187-97
 (标准的附录A)
 与法兰连接的平面的尺寸和要求
 A1与分体式高压法兰连接的平面要求和相关尺寸见图A1和表1。
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                | "M"表示公制螺纹连接的字符。如设备在国内使用,可能不标志"M"字符:如果出口设备,则应标记"M",该字符采用钢印打记,其位置必须放在O型密封圈区域之外。 | 
              
                | 表1 
                    
                      | 公称能径DN | 工作压力MPa | d30 -1.5
 | j | c ±
 | r | u ±0.25
 | v ±0.25
 | w±0.25 | x min
 | y | z | d1 | L1 | AA | BB | CC |  
                      |  3000PSI法兰 |  
                      | 15 | 21 | 12.7 | 54 | 38.1 | 8 | 19.05 | 8.75 | 17.5 | 33 | 46 | 23 | M8×1.25 | 12.5 | 56 | 52 | 49 |  
                      | 20 | 21 | 19.1 | 65 | 47.6 | 9 | 23.8 | 11.15 | 22.3 | 41 | 52 | 26 | 10×1.5 | 16.5 | 68 | 61 | 55 |  
                      | 25 | 21 | 25.4 | 70 | 52.4 | 9 | 26.2 | 13.1 | 26.2 | 48 | 59 | 29 | 10×1.5 | 16.5 | 72 | 67 | 61 |  
                      | 32 | 21 | 31.8 | 79 | 58.7 | 10 | 29.35 | 15.1 | 30.2 | 54 | 73 | 37 | 10×1.5 | 19.5 | 82 | 78 | 75 |  
                      | 40 | 21 | 38.1 | 94 | 69.9 | 12 | 34.95 | 17.85 | 35.7 | 64 | 83 | 41 | 12×1.75 | 19.5 | 96 | 90 | 85 |  
                      | 50 | 21 | 50.8 | 102 | 77.8 | 12 | 38.9 | 21.45 | 42.9 | 76 | 97 | 49 | 12×1.75 | 19.5 | 104 | 102 | 99 |  
                      | 65 | 17.5 | 63.5 | 114 | 88.9 | 13 | 44.45 | 25.4 | 50.8 | 89 | 109 | 54 | 12×1.75 | 21.5 | 117 | 114 | 111 |  
                      | 80 | 14 | 76.2 | 135 | 106.4 | 14 | 53.2 | 30.95 | 61.9 | 106 | 131 | 66 | 16×2 | 24.5 | 137 | 136 | 133 |  
                      | 100 | 3.5 | 101.6 | 162 | 130.2 | 16 | 65.1 | 38.9 | 77.8 | 132 | 152 | 76 | 16×2 | 26.5 | 165 | 160 | 155 |  
                      | 125 | 3.5 | 127 | 184 | 152.4 | 16 | 76.2 | 46.05 | 92.1 | 151 | 181 | 90 | 16×2 | 27.5 | 186 | 185 | 183 |  
                      |  6000PSI法兰 |  
                      | 15 | 41 | 12.7 | 56 | 40.5 | 8 | 20.25 | 9.1 | 18.2 | 38 | 48 | 24 | 8×1.25 | 14.5 | 59 | 56 | 53 |  
                      | 20 | 41 | 19.1 | 71 | 50.8 | 10 | 25.4 | 11.9 | 23.8 | 48 | 60 | 30 | 10×1.5 | 16.5 | 75 | 70 | 66 |  
                      | 25 | 41 | 25.4 | 81 | 57.2 | 12 | 28.6 | 13.9 | 27.8 | 54 | 70 | 35 | 12×1.75 | 16.5 | 84 | 80 | 75 |  
                      | 32 | 41 | 31.8 | 95 | 66.6 | 14 | 33.3 | 15.9 | 31.8 | 60 | 78 | 39 | 14×2 | 18.5 | 99 | 90 | 83 |  
                      | 40 | 41 | 38.1 | 113 | 79.3 | 17 | 39.65 | 18.25 | 36.5 | 70 | 95 | 48 | 16×2 | 20.5 | 116 | 108 | 101 |  
                      | 50 | 41 | 50.8 | 133 | 96.8 | 18 | 48.4 | 22.25 | 44.5 | 86 | 114 | 57 | 20×2.5 | 23.5 | 137 | 128 | 120 |  
                      | 65 | 32 | 63.5 | 175 | 123.8 | 26 | 61.9 | 29.35 | 58.7 | 115 | 150 | 75 | 24×3 | 35.5 | 178 | 167 | 156 |  
                      | 80 | 32 | 76.2 | 215 | 152.4 | 31 | 76.2 | 35.7 | 71.4 | 139 | 178 | 89 | 30×3.5 | 45.5 | 219 | 200 | 184 |  | 
              
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