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BOILER TUBE EXPANDERS

SERIES 38 EXPANDERS

Three Roll - Parallel Expanding - Single Flare Roll Type   |   Header Tube Expansion - Short Mandrels

Three Roll - Parallel Expanding - Single Flare Roll Type

Steam/Mud Drum
Steam/Mud Drum:
38 Series with drum mandrel.

Single Flare Roll Type
38 Expanders with Drum Mandrel
Check out the Tube Wall Thickness Birminghan Wire Gauge Chart for more information.

Tube Range Tube Seat Thickness - Inches (mm) Drum Mandrel
click here for
Short Mandrels
OD
Inches (mm)
GA Inches mm 1/2 to 7/8
(12.7 - 22.2)
3/4 to 1-1/8
(19.1 - 28.6)
1-1/8 to 1-5/8
(28.6 - 41.3)
1-5/8 to 2-1/8
(41.3 - 54.0)
2-1/8 to 2-5/8
(54.0 - 66.7)
1/2-Inch sq.
Expander Assembly* Spare Rolls Expander Assembly* Spare Rolls Expander Assembly* Spare Rolls Expander Assembly* Spare Rolls Expander Assembly* Spare Rolls
1
(25.4)
8 .654 - .719 (16.4 - 18.3) 31001 31446 31002 31450 31004 31456 31006 32626 32262
7-7/8 Lg (200)
9 .680 - .786 (17.3 - 20.0) 31011 31478 31012 31482 31014 31488 31016 32632
10 .703 - .815 (17.9 - 20.7) 31021 31022 31024 31026 32263
8-3/4 Lg (220)
11 .734 - .845 (18.6 - 21.5) 31031 31494 31032 31498 31034 31504 31036 31753
12 - 13 .760 - .881 (19.3 - 22.4) 31041 31042 31044 31046 31048 32355 32264
9-1/4 Lg (233)
14 .813 - .944 (20.7 - 24.0) 31051 31510 31052 31514 31054 31520 31056 32641
1-1/8 (28.6) 11 - 12 .859 - 1.004 (21.8 - 25.5) 31071 31072 31074 31076 32265
10-1/4 Lg (260)
13 - 14 .906 - 1.068 (23.0 - 27.1) 31081 31526 31082 31530 31084 31536 31086 32647 31088 31438
1-1/4
(31.8)
10 - 11 .939 - 1.118 (23.9 - 28.4) 31091 31092 31094 31096 31098 32266
11-1/4 Lg (284)
12 - 15 .990 - 1.193 (25.2 - 30.3) 31101 31542 31102 31546 31104 31552 31106 32653 31108 32449
1-1/2
(38.1)
8 1.053 - 1.257 (26.8 - 31.9) 31121 31558 31122 31562 31124 31568 31126 32656
9 - 11 1.156 - 1.349 (29.4 - 34.3) 31131 31132 31134 31136 32267
12 Lg (305)
12 - 14 1.248 - 1.432 (31.7 - 36.4) 31151 31574 31152 31578 31154 31584 31156 32662
1-3/4
(44.5)
9 - 11 1.400 - 1.615 (35.6 - 41.0) 31161 40322 31162 40324 31164 40326 31166 40328 31168 40330 32268
3/4 sq.
12
Lg (305)
* No Mandrels included in assembly
Applications:
  • Water Tube Boilers
  • Superheaters
  • Fire Tube Boilers
  • Economizers
Features
  • Self-Feeding
  • Three-Roll
  • Single Flare
  • Self Contained Rolls
  • Various Mandrels
    Available: Drum, Short, Header, Reverse



Header Tube Expansion - Short Mandrels


When water tube boilers do not offer easy access to the tube seat, Thomas C. Wilson offers a variety of solutions. Our Series 38 and Series 114 Expanders are available with a series of short mandrels. Used with gear trains, right angle drives or universal joints, they make tube rolling possible through a header or handhole.
Square header
Square Header: 38 Series Expander with short series mandrels connected to Right Angle Worm Gear Drive
Round Header
Round Header: 38 Series Expander with short series mandrels connected to Extension Universal Joint.
Single Flare Roll Type
Check out the Series 38 Expanders Three Roll - Parallel Expanding - Single Flare Roll Type for more information.
Tube Expander Assembly* Short Mandrels - 5-3/8-Inch (136.6mm) Lg. - 1/2-Inch Square (12.7mm)
Tube Seat Thickness = X
Inches (mm)
OD
Inches (mm)
GA 1/2 to 7/8
(12.7 - 22.2)
3/4 to 1-1/8
(19.1 - 28.6)
1-1/8 to 1-5/8
(28.6 - 41.3)
1-5/8 to 2-1/8
(41.3 - 54.0)
2-1/8 to 2-5/8
(54.0 - 66.7)
1
(25.4)
8 3100X 33624 33623 & 33624 33622 & 33624
9 3101X 33622 & 33624 33621 & 33624 33621, 33623 & 33624
10 3102X 33624 33623 & 33624 33622 & 33624
11 3103X 33623 & 32463 33622, 32351 & 32463
12 3104X 32351 & 32464 32351 & 32463
13 32465 33624 & 32465 33624 & 32464
14 3105X 33624 33622 & 33624
1-1/8
(28.6)
11 3107X 32464 & 32466 32463 & 32466
12 32467 32465 & 32467
13 3108X 32465 32463 & 32465
14 32464 & 32467
1-1/4
(31.8)
10 3109X 32465 & 32468
11 32467 & 32470 32468 & 32471
12 3110X 32465 & 32468 32464, 32466 & 32468 32464, 32465 & 32466
13 32469 32466 & 32469 32466, 32467 & 32468
14 32468 & 32471 32468, 32469 & 32470
15 32472 32469 & 32472 32469, 32470 & 32471
1-1/2
(38.1)
8 3112X 32470 & 32473 32469, 32471 & 32473
9 3113X 32472 & 32475 32471, 32473 & 32475
10 32474 & 32477 32473, 32475 & 32477
11 32477 & 32480 32476, 32478 & 32480
12 3115X 32471 & 32474
13 32473 & 32476
14 32474 & 32477
1-3/4
(44.5)
9 3116X 32307 & 32308
10 32308 & 32309
11 32309 & 32310 32308, 32309 & 32310
* No Mandrels included in assembly