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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. |
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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 |
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)
SGRRDDddCON
Length = Diam Change
(minimum 4" with 2" Collars)
SGRRDDddECC
Length = 2 x Diam Change
(minimum 4" with 2" Collars)
SGSRXXDD
SG = Spiral Galvanized : SR = Short Radius Elbow : XX = Degrees : DD = Diameter
(Example: SGSR4510 = 10" Rd Short Radius 45° Elbow)
Up to 30° = 2 Gore Construction
30° to 60° = 3 Gore Construction
60° to 90° = 4 Gore Construction
28" and Up Throat Radius = 6.0" with 1" Straight, 2" Collars
SGLRXXDD
SG = Spiral Galvanized : LR = Short Radius Elbow : XX = Degrees : DD = Diameter
(Example: SGLR9012 = 12" Rd Long Radius 90° Elbow)
(1" Straight and 2" Collars)
35° to 55° = 3 Gore Construction
55° to 75° = 4 Gore Construction
75° to 90° = 5 Gore Construction
Standard as (2) 45° Elbows + Connector
Welded 90°
Elbow with Tap
Welded 45°
Elbow with Tap
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)
Straight Barrel
Straight Barrel with Reducing Coupling
Reducing Barrel
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)
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)
Straight Barrel
Straight Barrel with Reducing Coupling
Reducing Barrel
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)
Specify Branch Type When Ordering (Standard Type is Straight Branch)
4" Long
2" Collar
Base 4" Wider
5" Long
2" Collar
Base is 2" Wider
6" Long
2" Collar
45° Outlet
2" Long
2" Collar
DD = Main Diameter BB = Branch Diam 1 bb= Branch Diam 2
(Example: SGWYEP221812 = 22" Rd Wye Pants with 18" Rd and 12" Rd Branches)
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.
SGSQRD
SG = Spiral Galvanized
SQRD = Square to Round
SGROFFDDXX
SG = Spiral Galvanized
ROFF = Round Offset
DD = Main Diameter : XX = Offset
When not Concentric, supply sketch.
Standard overall length is 12" unless dimensions prohibit.
Overall Length = Offset Length + 7"
SGSHOEDDBB
SG = Spiral Galvanized : Shoe = Shoe Tap
DD = Main Diameter : BB = Branch Diameter
SGLATEDDBB
SG = Spiral Galvanized : LATE = Lateral Tap
DD = Main Diameter : BB = Branch Diameter
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)
SGBELLRRDD
SG = Spiral Galvanized : BELL = Bell Mouth Tap : DD = Main Diameter
RR = Radius (SR=Short Radius / LR=Long Radius)
Throat Radius = 0.2 x Diameter
Length = Throat Radius + 1"
Bell End Width = Diamter + 4"
Throat Radius = 2"
Length = 3"
Bell End Width = Diamter + 4"
SGCONNDD
SG = Spiral Galvanized : CONN = Connector Type : DD = Main Diameter
(Example SGFCON18 = 18" Rd Fitting Connector)
PCON
FCON
ENDC
FLEX
STFX
STAR
Fitting Connector (Female)
End Cap (Male)
Flex Connector (Female)
Starting Flex Connector (Male)
Starting Collar (Male)
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
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)