է֧ާߧ ѧҧ

է֧ާߧ ѧҧ ֧ڧѧݧߧ ڧߧާ֧ߧ էݧ է֧ާ ҧӧԧ ڧߧާ֧ߧ ߧ֧ߧ, ԧѧ٧ӧ ާݧ֧ߧߧ ԧ֧ݧԧѧ٧ӧ֧էܧ. է֧ާߧ ѧҧ է֧ݧڧ ߧ ڧݧ ܧ ڧ B. ڧ ڧާ֧֧ 18 ԧѧէ ݧ֧, ڧ B ڧާ֧֧ 90 ԧѧէ ݧ֧. է֧ާߧ ѧҧ ާԧ ҧ ӧҧѧߧ ӧ֧ӧڧ ܧ ݧڧ. ߧ֧ԧѧݧߧ ѧҧܧ ӧݧߧ֧ߧ ڧ ӧܧߧ ݧ֧ԧڧӧѧߧߧ ѧݧ. ֧էڧߧ֧ߧڧ ܧާڧݧڧӧѧ API Spec 7-1.

֧ߧڧ֧ܧڧ ѧѧܧ֧ڧڧܧ ѧѧާ֧

No.

ߧާڧߧѧݧߧ ѧ٧ާ֧(mm)

I.D.(mm)

էܧݧ֧ߧڧ ӧߧ֧ߧ֧ ֧٧ҧ

է֧ާߧ ܧߧ

ڧ ֧٧ҧ

O.D.(mm)

DF/mm

ߧ ާڧ֧ܧڧ
LPB/

O.D (mm)

ߧ ާڧ֧ܧڧ
L Bާ

1

73

31.8

NC23

79.4

76.2

250

111.1

100

2

44.5

NC26

88.9

82.9

3

89

54

NC31

104.8

100.4

127

4

50.8

NC35

120.7

114.7

5

68.3

NC38

127

121

6

127

71.4

NC44

152.4

144.5

168.3

7

158.8

149.2

8

82.6

NC46

158.8

150

9

165.1

154.8

10

171.5

159.5

11

NC50

177.8

164.7

12

184.2

169.5

13

NC56

196.8

185.3

300

14

203.2

190.1

15

95.3

6 5/8 REG

209.6

195.7

16

NC61

228.6

212.7

17

7 5/8 REG

241.3

223.8

18

NC70

247.7

232.6

19

254

237.3

20

NC77

279.4

260.7