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1.1 This specification covers black and hot-dipped galvanized welded and seamless steel pipe in sizes NPS 1/2 (Note 1) to NPS 10 inclusive, with wall thicknesses as given in Table 1 and Table 2. Pipe having other wall thicknesses may be furnished provided such pipe complies with all other requirements of this specification and the outside diameter is as given in Table 2. Pipe ordered under this specification is intended for use in fire protection systems. The pipe may be bent, but it is not intended for bending made at ambient temperature wherein the inside diameter of the bend is less than twelve times the outside diameter of the pipe being bent (Note 2).
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."
Note 2--Successful bending of pipe is a function of equipment and technique as well as pipe properties.
1.2 This pipe is suitable for joining by the following methods:
1.2.1 Light-Weight Fire Protection Pipe-- Rolled groove, welding, and fittings for plain end pipe. See Table 1 for dimensions.
1.2.2 Standard-Weight Fire Protection Pipe-- Cut or rolled groove, threading, welding, and fittings for plain end pipe. See Table 2 for dimensions.
1.2.3 For pipe having dimensions other than those of Table 1 and Table 2, the joining method must be compatible with the pipe dimensions. A complete listing of standard light weight dimensions appears in ASME B36.10 and B36.19.
1.3 The following precautionary caveat pertains only to the test method portion, Sections 8, 9, and 10, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents may be approximate.
ICS Number Code 23.040.10 (Iron and steel pipes)
UNSPSC Code 40171601(Industrial welded carbon steel pipe); 40171602(Industrial seamless carbon steel pipe)