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Cangzhou Sinhoo Pipeline Manufacturer Co.,Ltd

Add:The Western Industrial Zone In Mengcun County, Cangzhou City, Hebei Province of China

Con:Jing Jia

Tel:0086-579-83052616

Fax:0086-579-83052615

E-mail:carrie@sinhoofit.com

Exhibition

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20K:Jack size and thread end dimensions of China, USA and Japan
Nov 29, 2017

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JIS 20KRFFF

公称通径

外径

螺栓孔中心圆直径

连接凸出部分直径

内径

法兰厚度

连接部分凸出高度

螺栓孔数量与直径

螺栓直径

DN

D

D1

D2

D3

t*

f

n-d

M

20

100

75

58

19

16 18

1

4-15

12

25

125

90

70

25

16 20

1

4-19

16

40

140

105

85

38

18 22

2

4-19

16

50

155

120

100

51

18 22

2

8-19

16

65

175

140

120

64

20 24

2

8-19

16

80

200

160

135

76

22 26

2

8-23

20

100

225

185

160

102

24 28

2

8-23

20

125

270

225

195

125

26 30

2

12-25

22

150

305

260

230

152

28 32

2

12-25

22

200

350

305

275

204

30 34

2

12-25

22

250

430

380

345

254

34 38

2

12-27

24

300

480

430

395

305

36 40

3

16-27

24