Hopewell Sheet Metal Mfg, Inc.

Hagerstown, MD USA

 


We Will Custom Fabricate Your Ductwork to Your Specifications,
SMACNA Specifications or Your Engineer's Specifications.


Spiral Duct & Fittings In Stock
click here to view & print a .pdf form
of the spiral fittings we offer

IN-STOCK MATERIAL

Galvanized Steel
26ga. thru 10ga.

Galvannealed Steel
24ga. thru 16ga.

Cold Rolled Steel
20ga. thru 11ga.

304 Stainless Steel
26ga. thru 12ga. (
2B Finish)
22ga. thru 12ga. (
#4 Bright Finish)

3003 Aluminum
.032 thru .250 (Mill Finish)

3003 Aluminum Diamond Plate
.125 thru .188

DUCTWORK SPECIFICATIONS

Rectangular Duct Seams
Snaplock
Pittsburg
Lg. Pittsburg
Welded

Spiral / Round Duct Seams
Snaplock
Acmelock
Gorelock
Spiral
Welded

Joint Connections
Slip & Drive
Bar Slip & Drive
T.D.C.
Duct Mate
Welded Flange