Pipe Clamps & Risers

A pipe clamp is a bolted pipe attachment which clamps around the pipe to connect the pipe to the remainder of a pipe hanger assembly. Piping Technology & Products, Inc. maintains an extensive inventory of pipe clamps required for pipe hanger and support assemblies. The pipe clamps and risers can be manufactured with galvanized or black finishes depending upon customer specifications.

TYPES & SIZES

Technical Information

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A pipe clamp is a pipe attachment which clamps around the pipe to connect the pipe to the remainder of a pipe hanger assembly. Pipe clamps are recommended for the suspension of cold pipe lines and may or may not be insulated.

When using pipe clamps as part of an anchoring assembly, the resistanceto the pipe movement can be developed in two fashions. One way would be toapply sufficient bolt torque to the pipe clamps which produces a friction loadwhich is adequate to suppress any of the associated pipe movement. Another waywould be to use lugs welded […]

The most common method for supporting vertical piping would be to first weld shear lugs into position, and then utilize a riser clamp which straddles the pipe. The load is then transferred by the riser clamp’s load bolts through hanger rod connections to our supporting structure. 22″ Diameter Riser Clamps

Riser clamps are a two point load bearing component and are usually used for vertical running pipe lines wherein shear lugs are welded to the pipe, the riser clamp top surface contacts the shear lug, and the load is transferred through the legs of the clamps to the support component such as a rigid rod, […]


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GENERAL DIMENSIONS & SPECIFICATIONS

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Fig. 50: Light Two Bolt Pipe Clamp

Fig50

SIZE RANGE: 1/2 inch thru 36 inches
MATERIAL: Carbon steel
FINISH: Black or galvanized; furnished black unless otherwise specified.
SERVICE: Recommended for suspension of cold pipe lines or hot lines where little or no insulation is required.
MAX. TEMP.: 750°F
ORDERING: Specify figure number, pipe size, description and finish.

PIPE SIZE MAX. RECOM. LOAD, lbs. B C D E F STOCK SIZE H APPROX. WEIGHT
@ 650° F @ 750° F G lbs. per each
1/2 500 445 1 1/2 1 17/32 1 5/16 1/8 x 1 1 17/32 0.29
3/4 500 445 1 1/8 1/2 1 21/32 1 1/8 5/16 1/8 x 1 1 21/32 0.33
1 500 445 1 1/8 1/2 1 29/32 1 3/8 5/16 1/8 x 1 1 21/32 0.35
1 1/4 500 445 1 7/16 1/2 1 31/32 1 7/16 5/16 1/8 x 1 1 31/32 0.37
1 1/2 800 715 1 9/16 1/2 2 5/32 1 5/8 5/16 1/8 x 1 2 3/32 0.43
2 1040 930 2 1/8 1/2 2 3/4 2 1/8 1/2 1/4 x 1 2 3/4 1.1
2 1/2 1040 930 2 1/2 5/8 3 1/4 2 5/8 1/2 1/4 x 1 3 1/8 1.2
3 1040 930 2 13/16 5/8 3 9/16 2 15/16 1/2 1/4 x 1 3 7/16 1.4
3 1/2 1040 930 3 1/8 5/8 3 13/16 3 3/16 1/2 1/4 x 1 3 3/4 1.5
4 1040 930 3 7/16 3/4 4 3/8 3 5/8 5/8 1/4 x 1 1/4 4 3/16 2.3
5 1040 930 4 3/4 4 15/16 4 3/16 5/8 1/4 x 1 1/4 4 3/4 2.6
6 1615 1440 4 7/8 7/8 5 7/8 5 3/4 3/8 x 1 1/2 5 3/4 5.4
8 1615 1440 6 1 7 6 1/8 3/4 3/8 x 1 1/2 6 7/8 6.5
10 2490 2220 7 5/16 1 8 9/16 7 7/16 7/8 1/2 x 2 8 7/16 13.6
12 2490 2220 8 1/4 1 9 9/16 8 7/16 7/8 1/2 x 2 9 3/8 15.2
14 2490 2220 9 1 1/8 10 5/8 9 1/4 7/8 1/2 x 2 1/2 10 3/8 20.5
16 2490 2220 10 1 1/8 11 5/8 10 1/4 7/8 1/2 x 2 1/2 11 3/8 22.3
18 3060 2730 11 1/2 1 1/4 13 11 5/8 1 5/8 x 2 1/2 12 7/8 31.6
20 3060 2730 12 1/2 1 3/8 14 1/8 12 3/4 1 1/8 5/8 x 2 1/2 13 7/8 35.8
24 3060 2730 15 1 5/8 16 7/8 15 1/4 1 1/4 5/8 x 3 16 5/8 53.1
30 3500 3360 18 1/4 2 21 1/4 19 1 3/4 3/4 x 4 20 5/8 113.9
36 4000 3570 22 1/2 2 1/2 25 1/2 23 2 1 x 5 25 219.0

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Fig. 60: Heavy Two Bolt Clamp

Fig60

SIZE RANGE: 3 inches thru 36 inches
MATERIAL: Carbon steel
FINISH: Black or galvanized; furnished black unless otherwise specified.
SERVICE: Recommended for suspension of cold or hot pipe lines with heavy load having little or no insulation.
MAX. TEMP.: 750°F
ORDERING: Specify figure number, pipe size, description and finish.

PIPE SIZE
MAX. RECOM. LOAD, lbs.
B C D E F
STOCK SIZE
H K
APPROX. WEIGHT (lbs. per each)
@ 650° F @ 750° F G
3
3370
3005
2 15/16
1
4
3 1/8
3/4
5/16 x 2
3 13/16
5/8
3.60
3 1/2
3370
3005
3 1/4
1
4 1/4
3 3/8
3/4
5/16 x 2
3 13/16
5/8
3.90
4
3515
3135
3 9/16
1
4 7/8
3 3/4
7/8
3/8 x 2
4 11/16
5/8
5.50
5
3515
3135
4 1/8
1
5 1/2
4 3/8
7/8
3/8 x 2
5 1/4
5/8
6.30
6
4865
4340
5
1 1/8
6 5/8
5 1/4
1
1/2 x 2 1/2
6 3/8
7/8
11.70
8
4865
4340
6 1/8
1 1/8
7 5/8
6 1/4
1
1/2 x 2 1/2
7 1/2
7/8
13.90
10
6010
5360
7 9/16
1 1/4
9 1/16
7 11/16
1 1/4
5/8 x 2 1/2
8 15/16
7/8
22.30
12
8675
7740
9
1 5/8
10 7/8
9 1/4
1 1/2
3/4 x 3
10 5/8
7/8
38.10
14
9120
8135
9 3/4
1 5/8
11 7/8
10
1 1/2
3/4 x 4
11 5/8
7/8
46.80
16
9120
8135
10 3/4
1 5/8
12 7/8
11
1 1/2
3/4 x 4
12 5/8
7/8
51.40
18
13800
12305
14 1/2
3
17 1/4
14 1/2
2
3/4 x 6
17 1/4
3
130.10
20
15300
13645
16
3
18 3/4
16
2
1 x 5
18 3/4
3
163.60
24
16300
14535
18 1/2
3 1/4
21 1/2
18 1/2
2 1/4
1 x 6
21 1/2
3 1/4
215.00
28
18000
16055
20 1/2
3 1/4
23 1/2
20 1/2
2 1/4
1 x 8
23 1/2
3 1/4
303.00
30
20500
18285
22 1/2
3 1/2
26
22 1/2
2 1/2

1

1/4 x 7

26
3 1/2
365.40
32
23750
21180
23 1/2
3 1/2
27
23 1/2
2 1/2

1

1/4 x 8

27
3 1/2
432.00
34
25000
22295
25
3 1/2
28 1/2
25
2 1/2
1 1/2 x 8
28 1/2
3 1/2
534.00
36
28000
24975
26 1/2
3 1/2
30 1/4
26 1/2
2 3/4
1 1/2 x 8
33 3/4
3 1/2
575.00

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Fig. 70: Light Three Bolt Pipe Clamp

Fig70

SIZE RANGE: 1/2 inch thru 36 inches
MATERIAL: Carbon steel
FINISH: Black or galvanized; furnished black unless otherwise specified.
SERVICE: Recommended for suspension of cold or hot pipe lines requiring little insulation or insulation up to 4 inches
MAX. TEMP.: 750°F
ORDERING: Specify figure number, pipe size, description and finish.

PIPE SIZE
MAX. RECOM. LOAD, lbs.
B
C
D
E
F
G
H
APPROX. WEIGHT
@ 650° F
@ 750° F
lbs. per each
1/2
950
850
15/16
5/16
2 7/8
2 7/16
3/8
3/16 x 1
1 3/8
0.66
3/4
950
850
15/16
5/8
2 7/8
2 7/16
3/8
3/16 x 1
1 3/8
0.70
1
950
850
1 1/16
5/8
3
2 9/16
3/8
3/16 x 1
1 1/2
0.76
1 1/4
950
850
1 1/4
5/8
3 1/8
2 11/16
3/8
3/16 x 1
1 11/16
0.81
1 1/2
1545
1380
1 13/16
1 1/16
4 7/8
4 1/8
5/8
1/4 x 1 1/4
2 3/8
2.30
2
1545
1380
2 1/8
1 1/16
5 7/8
5 1/8
5/8
1/4 x 1 1/4
2 11/16
2.60
2 1/2
1545
1380
2 5/16
1 1/16
6 1/8
5 3/8
5/8
1/4 x 1 1/4
2 15/16
2.70
3
1545
1380
2 3/4
1 1/16
6 11/16
5 15/16
5/8
1/4 x 1 1/4
3 1/2
3.00
4
2500
2230
3 3/8
1 1/16
7 5/8
6 1/2
3/4
5/16 x 2
4 1/2
6.70
5
2500
2230
3 15/16
1 1/16
8 1/8
7
3/4
5/16 x 2
5
7.00
6
2865
2555
4 3/4
1 7/16
9 11/16
8 9/16
7/8
3/8 x 2 1/2
6 1/8
11.50
8
2865
2555
5 3/4
1 7/16
10 11/16
9 9/16
7/8
3/8 x 2 1/2
7 1/8
13.20
10
3240
2890
6 7/8
1 7/16
12
10 5/8
1
1/2 x 2 1/2
8 1/4
19.80
12
3240
2890
7 7/8
1 7/16
13
11 5/8
1
1/2 x 2 1/2
9 1/4
22.30
14
4300
3835
9 1/16
2
14 5/16
12 11/16
1 1/4
5/8 x 3
10 11/16
37.70
16
4300
3835
10 1/16
2
15 5/16
13 11/16
1 1/4
5/8 x 3
11 11/16
41.40
18
4300
3835
11 1/16
2
16 5/16
14 11/16
1 1/4
5/8 x 3
12 11/16
44.90
20
5490
4900
12 3/8
2
17 5/8
15 7/8
1 1/2
3/4 x 3
14
57.30
24
4500
4015
14 3/8
2
19 5/8
17 7/8
1 1/2
3/4 x 3
16
65.90
28
6000
5340
17 1/2
2 1/4
24 1/4
21 3/4
1 1/2
3/4 x 4
20
112.30
30
7500
6675
18 1/2
2 1/2
26 1/8
23 3/8
1 1/2
3/4 x 5
21 1/4
150.00
36
10500
9345
22 1/2
3
32 1/4
28 3/4
1 3/4
1 x 5
26
257.50

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Fig. 70A: Alloy Three Bolt Pipe Clamp

Fig70a

SIZE RANGE: 1/2 inch thru 36 inches
MATERIAL: Chrome molybdenum steel (ASTM A387)
FINISH: Black
SERVICE: Recommended for suspension of hot pipe lines requiring up to 4″ of insulation.
MAX. TEMP.: 1050°F
ORDERING: Specify figure number, pipe size, description and finish.

PIPE SIZE
MAX. RECOM. LOAD, lbs.
B
C
D
E
F
G
H
APPROX. WEIGHT (lbs. per each)
@ 750° F @ 1000° F @ 1050° F
1/2
860
610
455
15/16
5/16
2 7/8
2 7/16
3/8
3/16 x 1
1 3/8
0.66
3/4
860
610
455
15/16
5/8
2 7/8
2 7/16
3/8
3/16 x 1
1 3/8
0.70
1
860
610
455
1 1/16
5/8
3
2 9/16
3/8
3/16 x 1
1 1/2
0.76
1 1/4
860
610
455
1 1/4
5/8
3 1/8
2 11/16
3/8
3/16 x 1
1 11/16
0.81
1 1/2
1410
1000
745
1 13/16
1 1/16
4 7/8
4 1/8
5/8
1/4 x 1 1/4
2 3/8
2.30
2
1410
1000
745
2 1/8
1 1/16
5 7/8
5 1/8
5/8
1/4 x 1 1/4
2 11/16
2.60
2 1/2
1410
1000
745
2 5/16
1 1/16
6 1/8
5 3/8
5/8
1/4 x 1 1/4
2 15/16
2.70
3
1410
1000
745
2 3/4
1 1/16
6 11/16
5 15/16
5/8
1/4 x 1 1/4
3 1/2
3.00
4
2290
1625
1200
3 3/8
1 1/16
7 5/8
6 1/2
3/4
5/16 x 2
4 1/2
6.70
5
2290
1625
1200
3 15/16
1 1/16
8 1/8
7
3/4
5/16 x 2
5
7.00
6
2620
1860
1380
4 3/4
1 7/16
9 11/16
8 9/16
7/8
3/8 x 2 1/2
6 1/8
11.50
8
2620
1860
1380
5 3/4
1 7/16
10 11/16
9 9/16
7/8
3/8 x 2 1/2
7 1/8
13.20
10
2970
2100
1565
6 7/8
1 7/16
12
10 7/16
1
1/2 x 2 1/2
8 1/4
19.80
12
2970
2095
1555
7 7/8
1 7/16
13
11 7/16
1
1/2 x 2 1/2
9 1/4
22.30
14
3915
2795
2060
9 1/16
2
14 5/16
12 11/16
1 1/4
5/8 x 3
10 11/16
37.70
16
3915
2795
2060
10 1/16
2
15 5/16
13 11/16
1 1/4
5/8 x 3
11 11/16
41.40
18
3915
2795
2060
11 1/16
2
16 5/16
14 11/16
1 1/4
5/8 x 3
12 11/16
44.90
20
4995
3550
2635
12 3/8
2
17 5/8
15 7/8
1 1/2
3/4 x 3
14
57.30
24
4995
3550
2635
14 3/8
2
19 5/8
17 7/8
1 1/2
3/4 x 3
16
65.90
28
5475
3890
2900
17 1/2
2 1/4
24 1/4
21 3/4
1 1/2
3/4 x 4
20
112.30
30
6850
4860
3630
18 1/2
2 1/2
26 1/8
23 3/8
1 1/2
3/4 x 5
21 1/4
150.00
36
9580
6800
5070
22 1/2
3
32 1/4
28 3/4
1 3/4
1 x 5
26
257.50

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Fig. 80: Heavy Three Bolt Pipe Clamp

Fig80

SIZE RANGE: 1/2 inch thru 36 inches
MATERIAL: Carbon steel
FINISH: Black or galvanized; furnished black unless otherwise specified.
SERVICE: Recommended for suspension of cold pipe lines or hot lines where little or no insulation is required.
MAX. TEMP.: 750°F
ORDERING: Specify figure number, pipe size, description and finish.

PIPE SIZE

MAX. RECOM.

LOAD, lbs.

B
C
D
E
F
G
H

APPROX.

WEIGHT lbs. per each

@ 650° F @ 750° F
1 1/2
2710
2420
2 1/8
1
5 13/16
5
3/4
3/8 x 2
3 1/8
5.5
2
2710
2420
3
1
6 1/16
5 1/16
3/4
3/8 x 2
4
5.7
3
2710
2420
3 5/8
1 1/2
8
6 1/2
3/4
3/8 x 2
5 1/8
7.5
4
3500
3125
4 1/2
1 3/4
9
7
7/8

3/8 x 2

1/2

6 1/2
10.7
6
3500
3125
4 3/4
1 3/4
10 3/16
8 15/16
1

3/8 x 2

1/2

6
12.0
8
4800
4285
6
2
11 3/8
10 1/8
1 1/8

1/2 x 2

1/2

7 1/4
18.5
10
5500
4910
7 1/4
2 1/4
13 1/8
11 3/8
1 1/4
1/2 x 3 1/2
9
30.3
12
7000
6250
8 5/8
2 1/2
14 5/16
12 9/16
1 3/8
5/8 x 3 1/2
10 3/8
42.0
14
9500
8485
9 5/8
2 1/2
15 1/2
13 1/2
1 1/2
3/4 x 4
11 5/8
60.0
16
10000
8930
10 7/8
3
17 1/8
14 7/8
1 3/4
3/4 x 4 1/2
13 1/8
80.0
18
13800
12325
12 1/2
3 1/2
18 1/4
16 1/4
2
1 x 4
14 1/2
115.0
20
15300
13665
13 1/2
3 1/2
19 3/4
17 1/4
2
1 x 5
16
140.0
24
16300
14555
15 1/2
3 1/2
22 5/16
19 5/16
2
1 x 6
18 1/2
190.0
28
18000
16055
18 7/8
4
31 3/4
27 1/4
2 1/4
1 x 7
23 3/8
354.0
30
20500
18285
19 7/8
4 1/4
32 3/4
28 1/4
2 1/4
1 x 8
24 3/8
406.0
36
28000
24975
24 5/8
4 1/2
40 1/4
34 3/4
2 3/4
1 1/2 x 8
30 1/8
678.0

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Fig. 90: Riser Clamp

Fig90

SIZE RANGE: 1/2″ thru 24″
MATERIAL: Carbon steel
FINISH: Black or galvanized; furnished black unless otherwise specified.
SERVICE: For support and steadying of steel pipe risers either insulated or bare, cast iron pipe, or conduit.
MAX. TEMP.: 650°F
ORDERING: Specify figure number, pipe size, description and finish.

PIPE SIZE
MAX. RECOM. LOAD
APPROX. WEIGHT
LENGTH
STOCK SIZE
BOLT SIZE
lbs. lbs. per 100 A
1/2
255
123
9 3/8
3/16 x 1 1/4
3/8 x 1 1/2
3/4
255
136
9 3/8
3/16 x 1 1/4
3/8 x 1 1/2
1
255
138
9 5/8
3/16 x 1 1/4
3/8 x 1 1/2
1 1/4
390
195
10
1/4 x 1 1/4
3/8 x 1 1/2
1 1/2
390
201
10 3/8
1/4 x 1 1/4
3/8 x 1 1/2
2
390
217
10 3/4
1/4 x 1 1/4
7/16 x 2
2 1/2
390
229
11 1/4
1/4 x 1 1/4
7/16 x 2
3
530
250
12
1/4 x 1 1/4
7/16 x 2
3 1/2
670
330
13
1/4 x 1 1/2
1/2 x 2
4
810
342
13 1/2
1/4 x 1 1/2
1/2 x 2
5
1160
493
14 1/2
1/4 x 2
1/2 x 2
6
1570
526
15 1/2
1/4 x 2
1/2 x 2
8
2500
986
18 1/2
3/8 x 2
5/8 x 2 1/2
10
2500
1112
20 3/4
3/8 x 2
5/8 x 2 1/2
12
2700
1662
22 3/4
1/2 x 2
5/8 x 3
14
2700
1925
24
1/2 x 2
5/8 x 3
16
2900
3250
26
5/8 x 2 1/2
3/4 x 3 1/2
18
2900
3375
28
5/8 x 2 1/2
3/4 x 3 1/2
20
2900
3500
30
5/8 x 2 1/2
3/4 x 3 1/2
24
3200
5070
36
5/8 x 3
7/8 x 3 1/2

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Fig. 190: Fabricated Riser Clamp

Fig. 190: Fabricated Riser Clamp

SERVICE:
In situations where the use of a welded lug attachment would create an undesirable crushing effect on the pipe wall, this clamp can transfer the load from the pipe wall to the riser clamp by means of hold-down lugs welded to the pipe.

Clamps may be furnished in either Carbon or Alloy steel with bolting to suit, using an allowable stress of 10,000 PSI. Temperature correction factors listed in “CHART A” are based on allowable stresses listed in MSS-SP-58.

METHODS OF SELECTION:
1. Determine total load to be supported and service temperature of the piping system.
2. Refer to “CHART A (table below)” and determine the temperature correction factor for the clamp material being used.
3. Multiply total load by the correction factor to obtain a corrected load.
4. Refer to “CHART C (below)” and locate the point determined by the intersection of the total load co-ordinate and the pipe size curve. Project this point horizontally until it intersects with the “D” dimension coordinate. Directly above this point is the required stock size.
5. The bolt diameter is obtained by using the uncorrected total load and referring to “CHART B (below)”.

ORDERING: Specify pipe outside diameter, total load, design temperature, material and dimension “D” or center to center of hanger rods.

NOTE: Pipe clamp can be fabricated to any specified material.

CHART A - STRESS-TEMPERATURE CORRECTION FACTORS
Material SpecificationDESIGN TEMPERATURE °F
ASTMGRADE65070075080085090095010001050110011501200
A 36-0.80.830.891.06--------
A . 387110.660.660.660.660.690.760.911.53----
A . 387220.660.660.660.660.690.760.911.281.722.38--
A . 2403040.940.950.960.970.9911.021.021.111.211.451.81

CHART B –

CLAMP SPACING AND BOLT SIZES

Uncorrected

Total Load lb.

3,400
4,700
6,200
8,000
10,000
12,000
16,000
19,000
25,000
32,000
40,000
55,000
67,000
82,000
96,000
118,000
135,000
154,000
BOLT – B
5/8
3/4
7/8
1
1 1/8
1 1/4
1 3/8
1 1/2
1 3/4
2
2 1/4
2 1/2
2 3/4
3
3 1/4
3 1/2
3 3/4
4
BOLT – C
3/4
7/8
1
1
1 1/8
1 3/8
1 1/2
1 3/4
2
2
2 1/4
2 1/2
2 3/4
3
3
SPACE – S
7/8
1
1 1/4
1 1/2
1 1/2
1 3/4
1 7/8
2 1/4
2 1/4
2 1/2
3
3 1/4
3 1/2
4
4
4 1/4
4 1/2
4 3/4

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