
Circular Duct Series
The circular duct series have always been GP spin's core products with catagory complete. We have the industries most advanced equipments and production process.
GP Spira's spiral duct system complies with European (DW 144) standards.
Our Capacity
Factory
: 40,000sft
Annual output
: 2,00,000 Sqm of duct (120 to 275 Gsm)
Material
: Galvanised steel, stainless steel aluminum, etc.,
Diameters
: 75mm to 1600 mm
Thickness
: 0.5 mm to 1.25 mm

Delhi Factory

Hyderabad Factory

Sealing Gasket : 'F' type EPDM rubber ring
GP spira's spiral duct system have been test according (DW 144), This result of the air leakage is over classe-D

Dimensions & Tolerance of spiral ducts & duct fittings
Size & Designation | 080 Ø | 100 Ø | 125 Ø | 150 Ø | 175 Ø | 200 Ø | 225 Ø | |
---|---|---|---|---|---|---|---|---|
DUCT : | D Max.: | 80.5 | 100.9 | 126.3 | 151.8 | 177.2 | 202.7 | 228.1 |
D Min.: | 80.0 | 100.4 | 125.8 | 151.2 | 176.6 | 202.0 | 227.4 | |
DUCTFITTINGS: | d Max.: | 79.3 | 99.7 | 125.1 | 150.4 | 175.8 | 201.1 | 226.5 |
d Min.: | 78.8 | 99.2 | 124.6 | 149.8 | 175.2 | 200.4 | 225.8 | |
Insertion Length,L | 40 | 40 | 40 | 40 | 40 | 40 | 40 | |
Thickness,T : | 0.6/0.8 | 0.6/0.8 | 0.6/0.8 | 0.6/0.8 | 0.6/0.8 | 0.6/0.8 | 0.6/0.8 |
*All Dimensions are in mm unless otherwise specified.



Spiral Circular Duct Series
Un-insulated Spiral Circular Duct Series

Spiral Duct
(R)

Pressed Elbow
(B90/60/45/30)

Pressed Tee-piece
(T)

Pressed Reducer
(FN)

Segmented Elbow
(BH90/60/45/30)

Damper
(DS)

Pressed Reducer
(F)

Reducer
(HFN)

T-Piece
(TVX)

X - Cross
(XVX)

End Cap with Net
(EM)

End Cap
(EP)

Non Return Damper
(RK)

Take Off
(TCR)

Coupler
(N)

Socket
(M)
Pre-insulated Spiral Circular Duct Series

Spiral Duct
(PR)

Pressed Elbow
(PB90/60/45/30)

Pressed Tee-piece
(PT)

Pressed Reducer
(PF)

Segmented Elbow
(PBH90/60/45/30)

Pressed Elbow
(PB15)

Segmented Elbow
(PB15)

Reducer
(PHFN)

Damper
(PDS)

Coupler
(PN)

Socket
(PM)

End Cap
(PE)

Non Return Damper
(PRK)

Penetration Piece
(PGIF)
Rectangular Duct Series

Rectangular Duct
(SR)

Rectangular Elbow
(SB90)

Rectangular Tee Piece
(ST)

Rectangular Reducer
(SF)

Rectangular Y-Piece
(STY15)

Rectangular Y-Piece
(STY)

Rectangular Y-Piece
(SXY)

Rectangular Reducing
TEE-Piece (SRT)

Rectangular Y-Piece
(STY15)

Rectangular Offset
Piece (SBO)

Rectangular Elbow
(SB45)

Rectangular to Round
(SPRX)

Volume Control
Damper (RVCD)

Flexible Connector
(RFLEX)

Take Off Callor
(TC)

End Cap
(SE)
Flat Oval Spiral Duct Series
- Flat Oval duct is Machine Formed round Sprial Duct.
- The oval shape provides less of a flat surface therefore making it less susceptible to vibration than rectangular ducts which reducess the need for rod and angle reinforcement.
- Flat oval duct can be supplied in lengths up to 12 feet, Producing fewer joints to reduce friction loss and installation costs.
Features
- Airtight - 4ply Lock-Seam
- Low friction loss
- Light Weight
- Longer lengths

Sizes of Flat Oval Spiral Duct


Oval Spiral Duct
(OR)

Oval Elbow
(OB)

Oval Tee-Piece
(OT)

Oval Reducer
(OF)

Oval Elbow
(----)

Oval Tee-Piece
(OT45)

Oval Coupler
(ON)

Oval Rectangular
(OPRX)
Air Diffuser Series

P-TX

P-TT

Q-PK

Air Supply Valve
(ASV)

Air Exhaust Valve
(AEV)

Rectangular Diffuser
(RDIFF)

Circular Diffuser
(CDIFF)

Swirl Diffuser
(SDIFF)
Air Distributor Series

P1-25-001

P2-25-003

P1-35-001

P2-35-003
Silencers

YRS

SB

SYS

SYRS
Accessories

Flexible Duct
(Insulated-PHS)

Flexible Duct
(Uninsulated-HS)

Semi Regid Duct
(RS)

Clamp Band
(SK)

Iris Damper

Duct Fan

Motorised Damper

Flexible Connector

Spiral Clamp

Hanger

Bracket

Clamp

Flange

Duct Clamp

Air Filter

Flexible Connector

Ventilation Cap
(VH)

Jet Cap
(HN)

Goose Neck

Access Door
(IPLR)

Slotted Channel
(SCH)

Multi hole Band
(FB-40)

Mate Flange
(TDC-35)

G Clamp

PVC Tape
(PVC-50)

Sealantes

Inspection Door

Take off

Fresh Air Grill

Louver
(SLV)

Louver
(SDF)
