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Spiral Galvanized Round Products
Please note that the following list is but a sample of the galvanized spiral round that Shade Tree Mfg. LLC produces. Configurations are subject to change. Call or e-mail us and we will be happy to supply you with our most recent product catalog and answer any questions you may have.

Spiral Pipe

All pipe is fabricated from hot-dipped G60 galvanized steel in gauges that meet or exceed SMACNA standards for spiral ducts. The following chart illustrates the minimum gauge requirements for pressure classes to positive 10" W.G.

SGPIPEDD

SG = Spiral Galvanized PIPE = 10’ Pipe Section DD = Diam

(Example: SGPIPE16 = 16" Rd x 10’ Pipe)

Diameter
Low Pressure Med Pressure High Pressure
6"
28 Ga 28 Ga 28 Ga
8"
28 Ga 28 Ga 28 Ga
10"
28 Ga 28 Ga 28 Ga
12"
28 Ga 28 Ga 26 Ga
14"
28 Ga 26 Ga 26 Ga
16"
26 Ga 26 Ga 24 Ga
18"
26 Ga 24 Ga 24 Ga
20"
26 Ga 24 Ga 24 Ga
22"
26 Ga 24 Ga 24 Ga
24"
26 Ga 24 Ga 24 Ga
26"
26 Ga 24 Ga 24 Ga
28"
24 Ga 22 Ga 22 Ga
30"
24 Ga 22 Ga 22 Ga
32"
24 Ga 22 Ga 22 Ga
34"
24 Ga 22 Ga 22 Ga
36"
24 Ga 22 Ga 22 Ga

Spiral Fittings

All fittings are made standard as male size (1/8" smaller) for slip fit into standard spiral ducts except for female coupling, which is made female size equivalent to standard spiral ducts. Fittings come standard unsealed, with sealing available on request. Fittings are fabricated from hot-dipped G60 galvanized steel that meets or exceeds SMACNA standards. Elbow fittings are fabricated with segmented standing seam construction for maximum rigidity, durability, and air-tightness. Fittings are standard fabricated (but not limited to) the following chart:

Diameter Shade Tree Standard Gauge SMACNA 2" W.G.
5" to 14" 26 Ga 26 Ga
16" to 26" 24 Ga 24 Ga
28" to 36" 22 Ga 22 Ga

Connection Types
Slip-Fit Connection
Welded Ring
Van Stone (Pipe)
Van Stone (Fitting)

Reducers

SGRRDDddSYM

SG = Spiral Galvanized : RR = Round Reducer : DD = Large Diam : dd = Small Diam

SYM = Symmertry (CON = Concentric ; ECC = Eccentric)

(Example: SGRR0806CON = 8" Rd to 6" Rd Concentric Reducer)

Concentric

SGRRDDddCON

Length = Diam Change
(minimum 4" with 2" Collars)

Eccentric

SGRRDDddECC

Length = 2 x Diam Change
(minimum 4" with 2" Collars)

Standard Fitting Type Is Concentric. Specify All Diameters And Changes If Not Concentric.

Short Radius Elbows

SGSRXXDD

SG = Spiral Galvanized : SR = Short Radius Elbow : XX = Degrees : DD = Diameter

(Example: SGSR4510 = 10" Rd Short Radius 45° Elbow)

SGSRXXDD

Up to 30° = 2 Gore Construction

SGSR45DD

30° to 60° = 3 Gore Construction

SGSR90DD

60° to 90° = 4 Gore Construction

Up to 26" Throat Radius = 3.5" with 1" Straight, 2" Collars

28" and Up Throat Radius = 6.0" with 1" Straight, 2" Collars


Long Radius Elbows

SGLRXXDD

SG = Spiral Galvanized : LR = Short Radius Elbow : XX = Degrees : DD = Diameter

(Example: SGLR9012 = 12" Rd Long Radius 90° Elbow)

SGSRXXDD
SGSR45DD
SGSR90DD
Centerline Radius = 1.5 x Diam
(1" Straight and 2" Collars)
Up to 35° = 2 Gore Construction
35° to 55° = 3 Gore Construction
55° to 75° = 4 Gore Construction
75° to 90° = 5 Gore Construction
28" Diam and up 90° Elbows Come
Standard as (2) 45° Elbows + Connector

Specialty Long Radius Elbows
One-Piece
Welded 90°
Five-Piece Gored 90°
Elbow with Tap
One-Piece
Welded 45°
Three-Piece Gored 45°
Elbow with Tap

Tees

SGTTDDddBBTAP

SG = Spiral Galvanized

TT = Barrel Type (TS = Straight Barrel, TC = Straight Barrel with Reducing Coupling, TR = Reducing Barrel)

DD = Main Diameter 1 dd = Main Diameter 2 BB = Branch Diameter

TAP = Tap Type (STR = Straight Tap, LAT = Lateral Tap, SHO = Shoe Tap, CON = Conical Tap)

(Example: SGTR181408SHO = 18" Rd to 14" Rd Reducing Barrel Tee with 8" Shoe Type Branch)

SGTTDDddBB

Straight Barrel

SGTSDDddBB

Straight Barrel with Reducing Coupling

SGTRDDddBB

Reducing Barrel

Specify All Diameters And Type When Ordering

Branch Roots Are 2" Long, With 2" Collars

Standard Fitting Type Is Reducing Barrel As Dimensions Permit (Otherwise Straight Barrel with Reducing Coupling and Fitting Connect)


Crosses

SGCCDDddBBTAP

SG = Spiral Galvanized

CC = Barrel Type (CS = Straight Barrel, CC = Straight Barrel with Reducing Coupling, CR = Reducing Barrel)

DD = Main Diameter 1 dd = Main Diameter 2 BB = Branch Diameter

TAP = Tap Type (STR = Straight Tap, LAT = Lateral Tap, SHO = Shoe Tap, CON = Conical Tap)

(Example: SGCS20200806CON = 20" Rd to 20" Rd Straight Barrel Tee with 8" and 6" Conical Type Branch)

SGCCDDddBB

Straight Barrel

SGCSDDddBB

Straight Barrel with Reducing Coupling

SGCRDDddBB

Reducing Barrel

Specify All Diameters And Type When Ordering

Branch Roots Are 2" Long, With 2" Collars

Standard Fitting Type Is Reducing Barrel As Dimensions Permit (Otherwise Straight Barrel with Reducing Coupling and Fitting Connect)


Branch Types

Specify Branch Type When Ordering (Standard Type is Straight Branch)

Shoe

4" Long
2" Collar
Base 4" Wider

Conical

5" Long
2" Collar
Base is 2" Wider

Lateral

6" Long
2" Collar
45° Outlet

Straight

2" Long
2" Collar


Wye Pants
Tee Pants
Bull Tee
SG = Spiral Galvanized : WYEP = Wye Pants : TEEP = Tee Pants : BULL = Bull Tee

DD = Main Diameter BB = Branch Diam 1 bb= Branch Diam 2

(Example: SGWYEP221812 = 22" Rd Wye Pants with 18" Rd and 12" Rd Branches)

SGWYEPDDBBbb
SGTEEPDDBBbb
SGBULLDDBBbb
Specify All diameters when ordering
Branch lengths and spread depend on diameters involved.
For Tee Pants, specify radius type (Long or Short) for the elbow portion.
Where sizes constrict, Tee Pants will be supplied as seperate Wye Pants and (2) 45° Elbows.

Square to Round

SGSQRD

SG = Spiral Galvanized

SQRD = Square to Round

Offset

SGROFFDDXX

SG = Spiral Galvanized

ROFF = Round Offset
DD = Main Diameter : XX = Offset

Specify Depth, Width, and Diam when ordering.

When not Concentric, supply sketch.

Standard overall length is 12" unless dimensions prohibit.

Offset Length = 0.5 x Diam + 2 x Offset (Unless Size Prohibits

Overall Length = Offset Length + 7"


Shoe Tap

SGSHOEDDBB

SG = Spiral Galvanized : Shoe = Shoe Tap

DD = Main Diameter : BB = Branch Diameter

Lateral Tap

SGLATEDDBB

SG = Spiral Galvanized : LATE = Lateral Tap

DD = Main Diameter : BB = Branch Diameter

(Example: SPSHOE2208 = 8" Rd Shoe Tap off 22" Rd Pipe)
Length = 6" with 45° Inlet Angle, 2" Collar
Length = 6" at 45° Angle, 2" Collar

Access Taps

SGATAPDDXXYY

SG = Spiral Galvanized : ATAP = Access Tap

DD = Main Diameter : XX =Square Dimension Across Pipe : YY = Square Dimension Along Pipe

(Example: SPATAP321410 = 14" x10" Access Tap off 32" Round)

Rectangular Tap without Tabs
Rectangular Tap with Tabs
Shoe Tap (with or without Tabs)

Bell Mouth Tap

SGBELLRRDD

SG = Spiral Galvanized : BELL = Bell Mouth Tap : DD = Main Diameter

RR = Radius (SR=Short Radius / LR=Long Radius)

Bell Mouth Taps are designed as a takeoff from rectangular ductwork and are available in 2 different configurations:
Normal Radius

Throat Radius = 0.2 x Diameter
Length = Throat Radius + 1"
Bell End Width = Diamter + 4"

Short Radius

Throat Radius = 2"
Length = 3"
Bell End Width = Diamter + 4"


Caps & Connectors

SGCONNDD

SG = Spiral Galvanized : CONN = Connector Type : DD = Main Diameter

(Example SGFCON18 = 18" Rd Fitting Connector)

Pipe Connector (Male)
PCON
Fitting Connector (Female)
FCON
End Cap (Male)
ENDC
Flex Connector (Female)
FLEX
Starting Flex Collar (Male)
STFX
Starting Collar (Male)
STAR
Pipe Connector (Male)
Fitting Connector (Female)
End Cap (Male)
Flex Connector (Female)
Starting Flex Connector (Male)
Starting Collar (Male)
Spiral Slip Fit, 4" Long
Spiral Acutal Fit, 4.5" Long
Spiral Slip Fit 2" Long
Spiral Actual Fit, 7" Long (Stretched)
Spiral Slip Fit, 9" Long (Stretched)
Spiral Slip Fit, 2" Long

Miscellaneous

While this listing covers a wide variety of products that Shade Tree Mfg. offers, options are not limited to only what you see here. A sample of other products and services are as follows, and feel free to contact us with any questions or products that you might need.

Reducing elbows

Specialty Radius Elbows (e.g. 1 x or 2 x Centerline Radius)

Mitered 90° Elbows with or without turnvanes

Blast Gates (Half or Full)

Spiralmate™, Keating™, Companion Flange

Duct Cap Temporary Duct Cover

Stamped Saddle Taps

Stamped Elbows

Duct Sealant

Corrugated Double Rib Pipe

Double Wall Pipe And Fittings

Specialty Materials (PCD, Stainless, Aluminum, Paint Grip/ Galvaneel)