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HVAC ductwork & accessories — manufacturing, supply & installation

Saudi Aramco approved In-Kingdom (IK) manufacturerSaudi Made memberSMACNA · DW-144SAES-K-001 · SAES-K-100

Our Eastern Province plant runs fully automated rectangular and spiral duct lines and an automatic damper line. We design, manufacture, supply and install every type of duct and accessory, with fast-track delivery for urgent needs.

350–500tons per month capacity

24–48 hfast-track delivery for urgent standard ducts

Ø 80–2,000 mmspiral duct range

13automated production machines

Approved supplier for Saudi Aramco · SABIC · SEC · NWC · Ma’aden · KFUPM · Royal Commission

Duct production line and finished TDF ducts in the Hadaf Dhahran workshop

Hadaf workshop floor with ducts in production

From our Dhahran workshop

In-house manufactured products

**Rectangular duct**GI / SS / black steel · C/S type or in-built TDF flange

**Spiral (round) duct**Ø 80–2,000 mm · seam-lock joint, leak-proof

**Volume control damper (VCD)**Parallel / opposed blade · manual or motorised · no welded joints

**Back draft damper (BDD)**Pressure relief for intake & discharge · lock-type, weld-free

**Plenum box**SMACNA construction for efficient air distribution

**Rectangular fittings**90°/45° elbows, reducers, offsets with in-built TDF

**Round fittings & tees**Spiral elbows, reducers and tees, machine-made

**Aluminium cladding**Round and square profiles, made to project size

**Fire-resistant painted duct**UL listed coating · fire-insulated duct for smoke extraction

**Pre-insulated phenolic duct**Per SMACNA · light, thermal and fire resistant

Why in-built TDF flanges

In-built TDF flange joint

Very strong, rigid construction
Excellent air tightness
No welding or riveting
Fastest, easy installation
Space-saving joint design
Consistent factory-made quality
Lower cost than angle flanges
Shortest delivery time

Transverse duct connector systems

Drive cleat (SMACNA T1)
Hemmed “S” cleat (SMACNA T6)
Standing “S” cleat (SMACNA T11)
Pittsburgh lock
Slip-on flanging system
In-built TDF
Companion angles
Lap joints
Grooved seam

Other HVAC products we supply

**Sound attenuators**Rectangular & circular (CS) · AMCA, ASTM E477, BS EN 7235

**Acoustic & stationary louvers**Low pressure drop · intake and exhaust

**Air terminal units**VAV, CAV & ABTU · AHRI compliant

We also supply HVAC pocket filters: high efficiency, low pressure drop, in all common sizes and grades.

Duct types

GI (galvanised iron) ducts
Stainless steel (SS) ducts
Black steel ducts
Square / rectangular ducts
Spiral (circular) ducts
Fire-rated & pre-insulated ducts

Joining & flanges

Drive slip, hemmed & standing S-slip
Slide-on flange 30 / 35 / 40 mm
Corner pieces 30 / 35 / 40 mm
Angle bar 30–50 mm, CS / GI / SS
Gasket ¼″ × ¾″
Square-to-round transitions

Hangers & supports

GI threaded rod 10 & 12 mm
Duct clamps (G-clamp)
Yellow strap ½″ & strap clips
Aero duct connector
Flexible connectors
Access doors

Sealing & insulation

Silicone sealant, normal & fire rated
Duct tape 3″ × 40 yd
Insulation 24 kg/m³, 25 mm
Insulation 48 kg/m³, 50 mm
Aluminium cladding
Other items on request

SMACNA gauge chart

Rectangular size	Sheet gauge	Round diameter
Up to 12 in	26	Up to 12 in
13–30 in	24	13–30 in
31–42 in	22	31–40 in
43–60 in	20	41–60 in
61 in and over	18	61 in and over

Designed and installed in full compliance with SMACNA DW-144.

Our manufacturing machines

Autoline VII duct line
Spiral duct machine
Plasma cutting machine
Elbow making machine
Corner-Matic machine
Vertical seam closer
Lock forming machine
TDF flange forming machine
Auto TDF flange forming / punching (40 t)
Shearing machine
Spot welding machine
VCD/BDD frame heavy-duty former
Damper blade heavy-duty former

From design to handover

Our in-house team prepares CAD shop drawings, clash-free coordination and quantity take-offs, then manufactures, delivers and installs. Every job passes engineering verification, revision certification, DCC, project management approval and operations certification.

DesignConcepts and shop drawings to client specification
ManufacturingHigh-quality production on automated lines
LogisticsTimely delivery to project sites
Supply & installationProfessional setup by skilled technicians
HandoverFinal inspection, TAB and project completion

HVAC installation

Expert installation with on-site supervision, safety compliance, precision fitting and strict timelines.

HVAC & A/C maintenance (AMC)

Preventive and breakdown AMCs with inspection visits, planning, spare supply and re-commissioning.

Modification of existing ducts

Rerouting, resizing, airflow balancing, upgrades and expansions with minimal downtime.

Refrigeration unit services

Installation, maintenance, repair and upgrade of commercial and industrial refrigeration units.

Testing, Adjusting & Balancing (TAB)ASHRAE · SMACNA · NEBB

Air & water balancing, ducted and chilled water
Pre-commissioning & functional testing
Performance checks: package units, AHUs, FCUs, VAVs
Static & dynamic pressure and duct leakage tests
Controls calibration & integration testing
Test reports, commissioning documents & client training

Let’s talk about your next project.

Send us your drawings, BOQ or material list. Our Business Development team will come back with a solution and a quotation.

CALL+966 55 413 5857
+966 13 363 8144

EMAIL · WEBinquiry@hadafalj.comwww.hadafalj.com

HEAD OFFICE

Al-Dana Tower
King Faisal West Road, Al Jubail 35514
Kingdom of Saudi Arabia

FACTORY & WORKSHOP

ELDA3720, Dhahran
Dammam 34521, Kingdom of Saudi Arabia

OUR PRESENCE

RiyadhDammamAl Jubail

Tell us what you need and we will reply with a solution and a quotation.

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