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3-Roll Tube Expander, Parallel Expanding, Single Flair Roll (Series 38)

SKU: N/A

Wilson’s Series 38 Expanders are designed for rolling and flaring in a single operation, provide excellent maneuverability, and convert to straight-roll expanders. They are suitable for water tube boilers, fire tube boilers, superheaters and economizers. They are made of selected chrome nickel alloy steel and treated in automatic electrically controlled furnaces to help ensure the longest possible service life.

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  • Self-Feeding
  • Three-Roll
  • Single Flare
  • Self Contained Rolls
  • Various Mandrels
  • Available: Drum, Short, Header, Reverse
  • Water Tube Boilers
  • Superheaters
  • Fire Tube Boilers
  • Economizers

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TubeRangeTube Seat Thickness – Inches (mm)Drum Mandrel
OD
Inches (mm)		GAInchesmm1/2 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 RollsExpander Assembly*Spare RollsExpander Assembly*Spare RollsExpander Assembly*Spare RollsExpander Assembly*Spare Rolls
1
(25.4)		8.654 – .719(16.4 – 18.3)3100131446310023145031004314563100632626––7-7/8 Lg (200)
9.680 – .786(17.3 – 20.0)3101131478310123148231014314883101632632
10.703 – .815(17.9 – 20.7)310213102231024310268-3/4 Lg (220)
11.734 – .845(18.6 – 21.5)3103131494310323149831034315043103631753
12 – 13.760 – .881(19.3 – 22.4)3104131042310443104631048323559-1/4 Lg (233)
14.813 – .944(20.7 – 24.0)3105131510310523151431054315203105632641––
1-1/8 (28.6)11 – 12.859 – 1.004(21.8 – 25.5)3107131072310743107610-1/4 Lg (260)
13 – 14.906 – 1.068(23.0 – 27.1)31081315263108231530310843153631086326473108831438
1-1/4
(31.8)		10 – 11.939 – 1.118(23.9 – 28.4)310913109231094310963109811-1/4 Lg (284)
12 – 15.990 – 1.193(25.2 – 30.3)31101315423110231546311043155231106326533110832449
1-1/2
(38.1)		81.053 – 1.257(26.8 – 31.9)3112131558311223156231124315683112632656––
9 – 111.156 – 1.349(29.4 – 34.3)3113131132311343113612 Lg (305)
12 – 141.248 – 1.432(31.7 – 36.4)3115131574311523157831154315843115632662
1-3/4
(44.5)		9 – 111.400 – 1.615(35.6 – 41.0)3116140322311624032431164403263116640328311684033032268
3/4 sq.
12
Lg (305)

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