1.1 This specification covers four specific types of plain end or threaded and coupled carbon steel pipe for use in water wells.

1.2 Each type of water well pipe shall conform to the following methods of manufacture and grade as specified on the purchase order:

1.2.1 Type I, Drive Pipe - Seamless or electric-resistance-welded, Grades A and B.

1.2.2 Type II, Water-Well Reamed and Drifted Pipe - Seamless or electric-resistance-welded, Grades A and B, or furnace-butt welded.

1.2.3 Type III, Driven Well Pipe - Seamless or electric-resistance-welded, Grades A and B, or furnace-butt welded.

1.2.4 Type IV, Water-Well Casing Pipe - Seamless or electric-resistance-welded, Grades A and B, or furnace-butt welded.

1.3 The values stated in inch-pound units are to be regarded as the standard.

Note 1 - The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as "nominal diameter," "size," and "nominal size."