Overhead Door Counterbalance Torsion Springs

The merchandise covered by these orders is helically-wound, overhead door counterbalance torsion steel springs (overhead door counterbalance torsion springs) and any cones, plugs or other similar fittings for mounting and creating torque in the spring (herein collectively referred to as cones) attached to or entered with and invoiced with the subject overhead door counterbalance torsion springs. Overhead door counterbalance torsion springs are helical steel springs with tightly wound coils that store and release mechanical energy by winding and unwinding along the spring's axis by an angle, using torque to create a lifting force in the counterbalance assembly typically used to raise and lower overhead doors, including garage doors, industrial rolling doors, warehouse doors, trailer doors, and other overhead doors, gates, grates, or similar devices. The merchandise covered by these orders covers all overhead door counterbalance torsion springs with a coil inside diameter of 15.8 millimeters (mm) or more but not exceeding 304.8 mm (measured across the diameter from inner edge to inner edge); a wire diameter of 2.5 mm to 20.4 mm; a length of 127 mm or more; and regardless of the following characteristics: wire type (including, but not limited to, oil-tempered wire, hard-drawn wire, music wire, galvanized or other coated wire); wire cross-sectional shape (e.g., round, square, or other shapes); coating (e.g., uncoated, oil- or water-based coatings, lubricant coatings, zinc, aluminum, zinc-aluminum, paint or plastic coating, etc.); winding orientation (left-hand or right-hand wind direction); end type (including, but not limited to, looped, double looped, clipped, long length, mini warehouse, Barcol, Crawford, Kinnear, Wagner, rolling steel or barrel ends); and whether the overhead door counterbalance torsion springs are fitted with hardware, including but not limited to fasteners, clips, and cones (winding or stationary cones). For purposes of the diameters referenced above, where the nominal and actual measurements vary, a product is within the scope if application of either the nominal or actual measurement would place it within the scope based on the definitions set forth above. The steel torsion springs included in the scope of these orders are produced from steel in which: (1) iron predominates, by weight, over each of the other contained elements; and (2) the carbon content is 2 percent or less, by weight. Subject merchandise includes cones attached to or entered with and invoiced with the subject overhead door counterbalance torsion springs. Such cones, which are typically cast aluminum, aluminum alloy or steel (but may be made from other materials) are made to mount the subject springs to the overhead door counterbalance system and create and maintain torque in the spring. Cones or other similar fittings that are not attached to the subject springs or are not entered with and invoiced with the subject springs are not included within the scope unless entered as parts of kits as described below. Subject merchandise also includes all subject overhead door counterbalance torsion springs and cones or other similar fittings for mounting and tensioning the spring entered as a part of overhead door kits, overhead door mounting or assembly kits, or as a part of a spring-operated motor assembly or as a part of a spring winder assembly kit for torsion springs. When counterbalance torsion springs and cones or other similar fittings for attaching and tensioning the torsion spring are entered as a part of such kits, only the counterbalance spring and cones or other similar fittings in the kit are within scope. Subject merchandise also includes overhead door counterbalance torsion springs that have been further processed in a third country, including but not limited to cutting to length, attachment of hardware, cones or end-fittings, inclusion in garage door kits or garage door mounting or assembly kits, or any other processing that would not remove the merchandise from the scope of these orders if performed in the country of manufacture of the in-scope overhead door counterbalance torsion springs. All products that meet the written physical description are within the scope of these orders unless specifically excluded. The following products are specifically excluded from the scope of these orders: leaf springs (slender arc-shaped length of spring steel of a rectangular cross-section); disc springs (conical springs consisting of a convex disc with the outer edge working against the center of the disc); extension springs (close-wound round helical wire springs that store and release energy by resisting the external pulling forces applied to the spring's ends in the direction of its length); compression springs (helical coiled springs with open wound active coils (such open winding is also known as pitch) that are designed to compress under load or force); and spiral springs (torsion springs wound as concentric spirals such as a clock spring or mainspring).