Fig 739 Intermediate 3 Bolt Alloy Pipe Clamp
APPLICATION: Fig. 739 Intermediate 3 Bolt Alloy Pipe Clamps are recommended for the support of hot piping with insulation when the temperature exceeds 750 °F and is less than 1050 °F. Fig. 739 Intermediate 3 Bolt Alloy Pipe Clamps have been designed to carry loads larger in magnitude than the Fig. 736 Standard 3 Bolt Alloy Pipe Clamp. The 3 bolt design enables the attachment to the pipe clamp outside of the insulation. For high temperature piping with thick insulation and a loading larger than this clamp will carry, a Fig. 742 or 745 3 Bolt Alloy Pipe Clamp may be used. Or, if the temperature and loads dictate, Alloy Yoke Clamps, Fig. 748 or 751, may be used. The selection of the proper 3 Bolt Pipe Clamp depends upon the temperature of the piping system and load to be carried. The loads shown on the data chart are listed for 950 °F, 1000 °F and 1050 °F service.
CONSTRUCTION: Fig. 739 Intermediate 3 Bolt Alloy Pipe Clamps are made from ASTM A387-Gr. 22 steel plate or bar stock and are provided with three alloy bolts and nuts.
FINISHES AVAILABLE: Black.
ORDERING: Specify figure number, nominal pipe diameter, name.
EXAMPLE: Fig. 739, 12”, Intermediate 3 Bolt Alloy Pipe Clamp.

Intermediate 3 Bolt Alloy Pipe Clamp
Fig 739 Intermediate 3 Bolt Alloy Pipe Clamp
NOM. PIPE DIA. (IN) | MAX. REC. LOAD (LBS.) 950°F | MAX. REC. LOAD (LBS.) 1000°F | MAX. REC. LOAD (LBS.) 1050°F | A" CTRLINE TO BOLT (IN) | B" CTRLINE TO END (IN) | C" GAP (IN) | D" CTRLINE TO TOP BOLT (IN) | E" CTRLINE TO TOP END (IN) | F | BoltL | G" Th | G" W | MATERIAL QTY | WT EA |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2 | 2400 | 1800 | 1400 | 2 5/8 | 3 5/8 | 1 | 6 5/8 | 7 5/8 | 3/4 | 3 1/4 | 3/8 | 2 | 12 3/8 | 7.49 |
2 1/2 | 3600 | 2700 | 2100 | 3 | 4 1/8 | 1 1/8 | 7 | 8 1/8 | 7/8 | 3 3/4 | 3/8 | 2 1/2 | 13 5/8 | 10.36 |
3 | 3600 | 2700 | 2100 | 3 3/8 | 4 1/2 | 1 1/8 | 7 3/8 | 7 1/2 | 7/8 | 3 3/4 | 3/8 | 3 | 13 5/8 | 11.81 |
3 1/2 | 3600 | 2700 | 2100 | 3 5/8 | 4 3/4 | 1 1/8 | 7 5/8 | 8 3/4 | 7/8 | 3 3/4 | 3/8 | 3 | 15 1/2 | 13.01 |
4 | 4700 | 3500 | 2700 | 4 1/4 | 5 1/2 | 1 1/4 | 8 1/4 | 9 1/2 | 1 | 4 1/4 | 1/2 | 3 | 17 3/8 | 19.20 |
5 | 4700 | 3500 | 2700 | 4 3/4 | 6 | 1 1/4 | 8 3/4 | 10 | 1 | 4 1/4 | 1/2 | 3 | 19 | 20.58 |
6 | 4700 | 3500 | 2700 | 5 3/8 | 6 5/8 | 1 1/4 | 10 3/8 | 11 5/8 | 1 | 4 1/4 | 1/2 | 3 | 21 7/8 | 23.02 |
8 | 7600 | 5650 | 4400 | 7 | 8 5/8 | 1 1/2 | 12 | 13 5/8 | 1 1/4 | 5 1/2 | 3/4 | 4 | 27 1/4 | 55.46 |
10 | 7600 | 5650 | 4400 | 8 | 9 5/8 | 1 1/2 | 13 | 12 | 1 1/4 | 5 1/2 | 3/4 | 4 | 27 7/8 | 56.53 |
12 | 7600 | 5650 | 4400 | 9 | 10 5/8 | 1 1/2 | 14 | 15 5/8 | 1 1/4 | 5 1/2 | 3/4 | 4 | 33 5/8 | 66.29 |
14 | 7600 | 5650 | 4400 | 9 3/4 | 11 3/8 | 1 1/2 | 14 3/4 | 16 3/8 | 1 1/4 | 5 1/2 | 3/4 | 4 | 35 7/8 | 70.11 |
16 | 7600 | 5650 | 4400 | 10 3/4 | 12 1/4 | 1 1/2 | 15 3/4 | 17 3/8 | 1 1/4 | 5 1/2 | 3/4 | 4 | 38 7/8 | 75.21 |
18 | 7600 | 5650 | 4400 | 11 3/4 | 13 1/4 | 1 1/2 | 16 3/4 | 18 3/8 | 1 1/4 | 5 1/2 | 3/4 | 4 | 42 | 80.51 |
20 | 9500 | 7050 | 5450 | 13 | 14 3/4 | 1 3/4 | 18 | 19 7/8 | 1 1/2 | 6 1/4 | 3/4 | 6 | 45 7/8 | 134.79 |
24 | 11000 | 8150 | 6300 | 15 1/2 | 17 1/4 | 1 3/4 | 20 1/2 | 22 1/4 | 1 1/2 | 6 3/4 | 1 | 6 | 53 5/8 | 201.60 |
26 | 11000 | 8150 | 6300 | 16 1/2 | 18 1/4 | 1 3/4 | 21 1/2 | 23 3/4 | 1 1/2 | 6 3/4 | 1 | 6 | 57 1/4 | 213.92 |
28 | 11000 | 8150 | 6300 | 17 1/2 | 19 3/4 | 1 3/4 | 22 1/2 | 24 3/4 | 1 1/2 | 6 3/4 | 1 | 6 | 60 7/8 | 226.23 |
30 | 14500 | 10750 | 8300 | 18 3/4 | 21 | 2 1/8 | 23 3/4 | 26 | 1 3/4 | 7 3/4 | 1 | 8 | 64 1/8 | 315.67 |
32 | 14500 | 10750 | 8300 | 19 3/4 | 22 | 2 1/8 | 24 3/4 | 27 | 1 3/4 | 7 3/4 | 1 | 8 | 67 1/4 | 329.82 |
34 | 14500 | 10750 | 8300 | 20 3/4 | 23 | 2 1/8 | 25 3/4 | 28 | 1 3/4 | 7 3/4 | 1 | 8 | 70 3/8 | 343.97 |
36 | 14500 | 10750 | 8300 | 21 3/4 | 24 | 2 1/8 | 26 3/4 | 29 | 1 3/4 | 7 3/4 | 1 | 8 | 73 5/8 | 358.69 |
42 | 14500 | 10750 | 8300 | 24 3/4 | 27 | 2 1/8 | 29 3/4 | 32 | 1 3/4 | 7 3/4 | 1 | 8 | 83 | 401.14 |