Custom Metal Fabricated Industrial Ducts

© 2016 Southern Metal Fabricatorswww.southernmetalfab.com

P.O. Box 743

Frazier Rd.

Albertville, AL 35950

(800) 989-1330

www.southernmetalfab.com

CUSTOM FABRICATED

INDUSTRIAL DUCTS


WHY CUSTOM METAL

FABRICATION?

Heavy industrial ductwork fabrication is a type of air

pollution control product. It is made from thick steel plates

and is made to order. You can’t buy a prefabricated

product. What you need is custom fabricated ducts.

http://www.southernmetalfab.com/pollution-control/ductwork/


INDUSTRIES THAT BENEFIT FROM

CUSTOM INDUSTRIAL DUCTWORK

Companies that often require custom fabricated industrial

ductwork include:

• Cement plants

• Manufacturing plants

• Mining operations

• Power-generation facilities


THE INDUSTRIAL DUCTWORK

FABRICATION PROCESS

Creating custom-fabricated industrial ducts follows a

straightforward six-step process.


Evaluate a customer’s

design or assist in creating

a viable design that meets

a customer’s application

requirements.

STEP ONE


STEP TWO

If design work is required, provide design drawings for

customer review prior to fabrication.

Alternatively, produce shop drawings from customer’s

design drawings and present shop drawings for approval.


STEP THREE

Once drawings are approved, confirm the production

schedule.


STEP FOUR

Release shop drawings to

determine the following

production requirements:

• Fit-up

• Weld-out

• Finishing


STEP FIVE

Administer in-process

quality control (QC)

inspections to ensure that

design requirements,

industry standards, and

quality expectations are

met and maintained.


Conduct final QC inspections and prepare for shipment.

STEP SIX


PROCESS DUCTWORK

Process ductwork is used in heavy industrial applications to

convey material — usually hot gas and particulates — from

one place to another. It needs to be thick and durable to

resist the corrosive materials it comes in contact with.


PROCESS DUCTWORK DETAILS

• Process ductwork is often coated with thick shellac or

lined with ceramic to resist abuse.

• It can also be lined with insulation to minimize heat.

• It can be round or rectangular in profile.

– The mining industry generally favors round ducts.

– Power plant ductwork is often rectangular with spacers to

minimize vibrations.


Commissioned by a sand

plant in Texas, this was a

multi-floor installation that

connected multiple silos to a

single baghouse.

• 4” to 30” diameter

• Carbon steel

SAND PLANT DUCTS


These 12,462 lbs. of custom

fabricated Flue Gas

Regulation (FGR) ductwork

were insulated and included

channel and angle pieces.

• 42” outer diameter

• A36, A515, and A516

steel plate

• Flame control insulation

POWER PLANT DUCTS


HVAC DUCTWORK

HVAC ductwork is used in all plants for heating, ventilation,

and air conditioning (HVAC). As part of the environmental

system, it ensures indoor air quality and regulates air

temperature by supplying and removing air from a facility.


This cladded ductwork was

designed to handle high-

temp, high-velocity airflow.

• 483’ total ductwork

• Carbon steel

• Two layers of 2”-thick

8PCF mineral wool

insulation throughout

• Flame Control

TemperKote paint

CLADDED DUCTWORK


OTHER POLLUTION CONTROL

COMPONENTS

Other pollution control components that can be created by

a custom metal fabricator include baghouses, cyclones,

and dust collectors. As with ductwork, these products

demand precision and must be custom fabricated.


A fab and install job, this

custom industrial cyclone

was fabricated for a plant in

Birmingham, Ala.

• 36” diameter x 203: OAH

• AR400 plate

• 8 weeks from P.O. to

installation

CYCLONE

http://www.southernmetalfab.com/pollution-control/hydrocyclones/


These dust collectors came

equipped with a quarterly

maintenance plan.

• 6’-4” x 13’-7” collector

with 35’-5” 12”-diameter

duct

• A36 carbon steel

• Primer and industrial

enamel finish

DUST COLLECTOR

http://www.southernmetalfab.com/pollution-control/dust-collectors/


ADDITIONAL RESOURCES

For more information about custom fabricating heavy ductwork, please take a

look at these articles from our blog:

• Heavy & Custom Metal Ductwork Fabrication

• How Heavy Ductwork Is Custom Fabricated

• New OSHA Guidelines for Industrial Ductwork & Other Confined Spaces

• Finishing Grades for Ductwork Fabrication

And if you’d like to see more examples of ducts and other air pollution control

equipment we’ve made, please visit the pollution control page on our website.

http://www.southernmetalfab.com/blog/custom-metal-ductwork/

http://www.southernmetalfab.com/blog/how-heavy-ductwork-is-custom-fabricated/

http://www.southernmetalfab.com/blog/osha-guidelines-industrial-ductwork-confined-spaces/

http://www.southernmetalfab.com/blog/ductwork-fabrication-finishing-grades/

http://www.southernmetalfab.com/pollution-control/


THANK YOU!

Southern Metal Fabricators

(800) 989-1330 | www.southernmetalfab.com

Custom Metal Fabricated Industrial Ducts

Engineering

Transcript of Custom Metal Fabricated Industrial Ducts