Round Pipe                                 

Graco Metals manufactures both Single & Double         

wall round pipe. Our single wall pipe and fittings are         

 manufactured in accordance with1995 SMACNA duct         

 construction standards.        

Our spiral pipe utilizes a 4-ply seam while our long seam         

pipe is either seam welded or 100% wire welded         

Elbows can be 2 pc. die stamped up to 12” diameter or         

three & five gore fabricated.        

See our pdf catalog link for more information on our         

 Round Single Wall Pipe         

Our Double Wall pipe and fittings are manufactured in accordance with         

 1995 SMACNA (ACOUSTI-DUCT) 2”-10” w.g. positive static duct construction standards.        

Our Double Wall construction utilizes the outer shell with 1”-2”  insulation with a perforated or solid liner.         

See our pdf catalog link for more information on our          

 Round Double Wall Pipe