直通法兰(pn20) 型式和尺寸
型式和尺寸见图1和表1。
标记示例:
公称通径DN20的直通法兰:
直通法兰 20 JB/2Q 4486—2006
表1
通 DN | 钢管 D^xS | A | B | C | D | l | Dz | d3 Hll | d | h | E | 法兰用 螺钉 | 〇形》 <GB/T 3432‘1) | 质置 kg | |||||
10 | 1*X2 | 55 | 22 | 9 | 12 | 18.5 | 2S | 30.3 | 11 | 3-S | 1.9: | 36 | M10 | 2S.«x2,(iSG | 0.40 | ||||
15 | 22X3 | 55 | 22 | 11 | 16 | 22.5 | 32 | 30.3 | 11 | 3.8 | 謂 | 40 | M10 | 25-0K26SG | 0.45 | ||||
m | 2S^4 | 55 | 22 | 12 | 2D | 28.5 | 38 | 35-3 | L! | 3.8 | U | 40 | M10 | 30.0X2.65G | 0.40 | ||||
25 | 34^5 | 75 | 2S | 14 | 24 | 35 | 45 | 似-6 | 13 | 30 | 2,7f | 56 | M12 | 35.5X3.55G | 0.94 | ||||
32 | 42x6 | 75 | 23 | 16 | 30 | 43 | 0 | 55 | 47.1 | 13 | 5.0 | +虹 0’ | I.7i | + 0.L 0 | 56 | + 0J | M12 | 4}-〇X3.55G | 0,84 |
40 | 5〇xA | ioci | 36 | 1& | 3S | 52 | 63 | 37Λ | 18 | 5.0 | 2.75 | 73 | M16 | 50.0X3*550 | 2.10 | ||||
50 | 63X7 | 100 | 36 | 20 | 4£ | 65 | 75 | 6ΊΛ | 18 | 5,0 | IJ5 | 73 | M16 | 60.0X3.55G | 1.S5 | ||||
65 | 76^8 | 14fl | 45 | 22 | 60 | 78 | 95 | 7β.1 | 24 | 5,0 | 2,75 | 103 | M22 | 71,0^3.5SG | S.30 | ||||
SO | 39xlC | 140 | 45 | 25 | 70 | 9t | 108 | 92.1 | 24 | 5.0 | 2.75 | 193 | M22 | S5,0>i3.SG |
注:1直通法兰E用的嫌栓按GB/T 3098,1,强度等级为8. Sn 2直通法兰材料为20号锵β技术要求按<管路法兰技术条件XJB/T 74)的规定
