What is a Pittsburgh joint?
In sheet metal work, a Pittsburgh Seam is a joint that is created with an extended straight flange and a pocket.
What is a lock seamer?
noun. a joint between two pieces of sheet metal, made by folding up the overlapping edges against each other, then folding them over in the same direction a number of times.
What is a Pittsburgh lock seam?
The Pittsburgh Lock is the most common longitudinal seam in Rectangular Duct. It is comprised of two parts: the Pittsburgh seam (which is basically a pocket and an extending straight flange) and the 90 degree Right Angle Flange.
How old is the Pittsburgh coal seam?
The Pittsburgh coal is one of many minable coal beds that were deposited across the Pennsylvanian (late Carboniferous) and Permian (330–265mya) eras in a subsiding foreland basin that was filled in with sediments eroded from an ancient landmass located to the east.
What is a Lockformer used for?
Lockformer HVAC sheet metal roll forming and cutting machinery and solutions have become the standard by which all other industry solutions are measured.
Can you make a Pittsburgh seam by hand?
Manually forming a Pittsburgh seam will result in a joint with the same strength as a rollformed seam, and it does not require any measuring before forming.
How deep is the Pittsburgh coal seam?
366 m.
The Pittsburgh coals are deepest in the center of the basin, occurring at 366 m. The group is generally persistent and consistently thick, averaging 1.8–2.4 m thick (Ruppert et al., 1999).
How thick is the Pittsburgh coal seam?
Results of this study show that throughout much of Belmont County, the Pittsburgh coal bed is either just a little more or less than 60 in thick.
What is a Pittsburgh lock former?
Pittsburgh lock-forming machine designed to make 6 types of heavy gauge locks 18 – 26 Ga (0,45 – 1.2.. Pittsburgh Lock Seamer can cut your finishing time up to 90%. It can be used to fold over or “seam” .. Pittsburgh Lock Seamer can cut your finishing time up to 90%.