Bolt Dia. (D)
(in.– threads/
inch)
Tensile Stress
Area (Ab), (sq.–
in.)
2226, 2228: 303, 304SS, SAE F593
Group 1 2229: 316SS, SAE F593
Group 2 Yield strength:
65000 psi for 0.25 <=dia<=0.625
45000 psi for 0.75<=dia<=1.5
A193 B8, B8M Cl 1, A276 Tp 304,
A582 Tp 303
Yield strength=30000 psi
Ultimate tensile=75000 psi
Max. preload (lbs)
Torque N-m | ft-lb
Nickel or Moly Anti-
seize K=0.15
Max. preload
(lbs)
Torque N-m | ft-lb
Nickel or Moly An-
ti-seize K=0.15
2.625-8
4.921
155012
6896 | 5086
103341
4598 | 3391
2.75-4
4.934
155421
7244 | 5343
103614
4829 | 3562
2.75-8
5.425
170888
7964 | 5874
113925
5309 | 3916
2.875-8
5.953
187520
9137 | 6739
125013
6092 | 4493
3-4
5.967
187961
9557 | 7049
125307
6371 | 4699
3-8
6.506
204939
10419 | 7685
136626
6946 | 5123
6.6.11.2 Maximum torque values for fasteners
Goulds 2238, 2239, ASTM A193 B7 and Goulds 2299 ASTM A320 L7
Table 4: High strength steel fasteners
Bolt Dia. (D) (in.–
threads/inch)
Tensile Stress Area
(Ab), (sq.-in.)
2238, 2239 (A 193 B7) ¼-2 ½ dia: Sult = 125
ksi, Sy=105 ksi over 2 ½ – 4: Sult = 115 ksi,
Sy=95 ksi over 4 – 7: Sult = 100 ksi, Sy=75 ksi
2299 (A 320 L7) ¼-2 ½
dia: Sult = 125 ksi,
Sy=105 ksi
Max. Preload (lbs)
Torque N-m | ft-lb
Nickel or Moly An-
ti-seize K=0.15
Torque N-m | ft-lb
Nickel or Moly Anti-
seize K=0.15
1/4-20
0.0318
2337
9 | 7
9 | 7
5/16-18
0.0524
3851
20 | 15
20 | 15
3/8-16
0.0775
5696
37 | 27
37 | 27
7/16–14
0.1063
7813
58 | 43
58 | 43
1/2–13
0.1419
10430
88 | 65
88 | 65
9/16–12
0.1819
13370
127 | 94
127 | 94
5/8–11
0.2260
16611
176 | 130
176 | 130
3/4–10
0.3345
24586
312 | 230
312 | 230
7/8–9
0.4617
33935
503 | 371
503 | 371
1–8
0.6058
44526
755 | 557
755 | 557
1.125-7
0.7633
56103
1070 | 789
1070 | 789
1.125-8
0.79045
58098
1108 | 817
1108 | 817
1.25-7
0.9691
71229
1509 | 1113
1509 | 1113
1.25-8
1.000
73500
1556 | 1148
1556 | 1148
1.375-6
1.155
84893
1978 | 1459
1978 | 1459
1.375-8
1.234
90699
2114 | 1559
2114 | 1559
1.5-6
1.405
103268
2625 | 1936
2625 | 1936
1.5-8
1.492
109662
2788 | 2056
2788 | 2056
1.5-12
1.581
116204
2954 | 2179
2954 | 2179
1.625-8
1.775
130463
3593 | 2650
3593 | 2650
1.75-5
1.899
139577
4139 | 3053
4139 | 3053
1.75-8
2.082
153027
4538 | 3347
4538 | 3347
1.875-8
2.414
177429
5637 | 4158
5637 | 4158
6.6 Reassembly
112
3620 i-FRAME API type BB2 single stage / ISO 13709 2nd Ed/API 11th Ed Installation, Operation, and Maintenance
Manual
Содержание GOULDS PUMPS i-FRAME 3620
Страница 2: ......