Fire Rated / Normal GI
Ducts
Duct Solutions Cataloug

GALVANIZED IRON DUCT
G.I. Rectangular Ducts are fabricated in our factory according
to the requirements of customers. Ducts are fabricated using
high grade G.I. steel coils and processing of operations is
on ultra modern automatic duct making machines operated
by experienced and skilled staff. Each duct piece passes
through strict Quality Control checks and ensures adhere
to specifications and standards, whether it is a normal G.I.
duct or a Fire Rated one. The complete range of ducting
offered by NAFFCO Flow Control is competitively priced
and is insured for full protection against air leakages, fire &
smoke and sound.

ALUMINIUM DUCT
NAFFCO is experienced in fabricating
aluminium ducts which is, as mentioned in ASTM B209,
BS EN485, BS EN515, BS EN573 subject to the uncovered
surroundings.
Aluminium ducts are manufactured from AA1100 sheets
of aluminium/sheets with Tailored ‘S’ & Drive ‘C’ cleats of
equal grade or crosswise joints of FL flange type.
Plain type (Reflector quality) is also generally utilised as
air ducts in places like clean rooms for sensitive industrial
application, swimming pool, etc. Stucco engraved form is
relatively dent & scratch resistant which is mostly used as
cladding on exposed G.I. ducts.

STAINLESS STEEL DUCT
NAFFCO ’s Stainless Steel (SS) ducts are
manufactured from SS coils of 316 / 304 grades with
transverse & fully welded longitudinal joints.
We employ special skilled workforce to manufacture SS
ducts and fittings. Stainless steel Ducts are fabricated as
per the standards of NFPA, BS and ASHRE.
Stainless Steel ducts are widely utilised in open
surroundings to observe zones and in the zones where
Cleanliness is the main concern and in extremely abrasive
environments. Stainless Steel ducts are stronger, stiffer
and finest quality in comparison with G.I. ducts. SS
duct has the characteristics of corrosion resistant & fire
resistance.

DUCT JOINING
SLIP-ON FLANGES:
Roll-formed G.I. Section with embedded
sealant. Available in different cross-sections to provide a
range of rigidity and strength characteristics.
GASKET:
Self-adhesive, micro-cellular, crosslinked, Polyethylene foam type. (Alternatives:
PVC or Neoprene)
CORNERS:
To be inserted into the hollow we of
the slip-on flange. 4 corner pcs. are required for
each rectangular frame, 8 corner pcs. per joint.
CARRIAGE BOLTS WITH FLANGED NUTS:
Electrogalvanized, square-necked carriage bolts, with
flanged nuts, Each joint required 4 sets.