Time of publication:2024-04-04
Threaded welded pipe fittings are available in several types (bends, tees, plugs, junctions, couplings, etc.), sizes (hole sizes from 1/8 to 4 inches and nominal values 2000, 3000, 6000, 9000) and grades of materials (the most common are ASTM A105, ASTM A350 LF1 / 2/3/6 for low temperatures, ASTM 182 for aggressive, high temperature applications). The fitting class represents the maximum allowable pressure that the device can withstand.
Class 3000 fittings are used for pipes with a wall thickness of 80 /XS; class 6000 for sch160 pipes; Class 9000 fittings for pipes with a greater wall thickness (XXS).