GB 9113.25-88 PN 25.0MPa(250 bar) 环连接面整体钢制管法兰.pdf

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中华人民共和国国家标准
PN25.0MPa(250bar)环连接面整体钢制管法兰G911.25-88
Integral steel pipe flanges with ring-joint
face for PN 25.0MPA(250bar
本标准适用于公称压力PN为25.OMPa(250bar)的环连接面整体钢制管法兰
法兰的型式和尺寸按下图和下表的规定。
注:1)凸出部分高度与梯形深度尺寸E相同,但不受尺寸E公差的限制,允许采用如虚线所示轮廓的全平面式。
国家机城工业委员会1988-04-09批准
1989-01-01实施
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GB9113.25-88
连接尺寸
密封面
法兰颈
螺栓
公法
称兰「法
螺栓孔
径「「」中心留/
通「内
数螺
法兰厚度
直径
0径量纹
径
dmin
E
F「Rmax
N
min
两法兰间距离近似值
n Th.
15「1312082.512241M20R1260.539.6716.358.7410.812253814.74
17130?8.0?224M20R146654446.3518.7410.8|255456
25「22150101.512641M24R1671.5」5.-806-3518.740.829.01526.34
29160111012641M24R18831.060.3216.3518.740.8129.0647.94
40「35180124.01304M27R2092.?68.2816.3518.-740.8132.0709.54
504821516502681M24R24124.095.2517.921.90.8138-511051.173
57245」19.5「308M27R27137.0107.957.921.910.841
76270203-013381M30R35168,0136.527.921.910.8148-0133115-9
921310241.513681M33R39194.01161.927.921.910.8154.0162119.03
125「11」375292.0「4281M39R4422.01193-6817.9211.910.8173.5197123.23
1501373951317.51391121M36」R46248-01211.1219.5213.491.5183.0229127.83
200178485393-5145121M42」R50318.0126.881.1316.61.5192.0292135.74
25022585482.5「52121M48R54371.01323.851-1316.6611.5108.0368143.74
300264675571.-5「5616M521R58438.01381.0014.2723.011.5124.0451150.85
350289750635.0?60116M56R63489.01419-1015.8828.972,.4133-549515.6
400330825705-01681161M641R67546.01469.9017.48B0.182.4146-5552163.58
450371915775176161M72R71613.05334017-4830.182-4162.059771.48
500416985832.0?80161M761R75」673.058.2012-488.322.417806417.410
600485117099.5941161M90「R79」794.0692.1520.6236.5312.4203.5762194.5111
2法兰的技术要求按GB9125-88&钢制管法兰技术条件》的规定。
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