【国外标准】 Standard Specification for Seamless and Welded Carbon Steel Water-Well Pipe

This specification covers four specific types of plain end or threaded and coupled carbon steel pipe for use in water wells. Water well pipe are classified into four types according to grads: type I, drive pipe; type II, water-well reamed and drifted pipe; type III, driven well pipe; and type IV, water-well casing pipe. The steel for both seamless and welded pipe shall be made by one of the following processes: open-hearth, electric furnace, or basic-oxygen. Tensile test, tension test, and hydrostatic test shall be required to conform to the requirements specified.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 either inch-pound units or in SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values in each system are not exact equivalents; therefore, each system is to be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.NOTE 1: The dimensionless designator NPS (nominal pipe size) and DN (Nominal Diameter) have been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.