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ASTM A795-13(R2020) pdf free download

ASTM A795-13(R2020) pdf free download.Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use
1. Scope
1.1 This specification covers black and hot-dipped galva- nized welded and seamless steel pipe in NPS 1/2 to NPS 10, inclusive [DN 15 to DN 250, inclusive] (Note 1), 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 ofthe bend is less than twelve times the outside diameter of the pipe being bent (Note 2). N OTE 1—The dimensionless designators 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.” N OTE 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 values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 The following safety hazards caveat pertains only to the test method portion, Sections 8, 9, and 10, ofthis specification: This standard does not purport to address all of the safety concerns, ifany, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the appli- cability ofregulatory limitations prior to use. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
9. Nondestructive Electric Test
9.1 As an alternative to the hydrostatic test, and when accepted by the purchaser, test each pipe with a nondestructive electric test in accordance with Practice E213, Practice E309, or Practice E570. It is the intent of this test to reject pipe containing defects. 9.2 The following information is for the benefit of the user of this specification: 9.2.1 The ultrasonic examination referred to in this specifi- cation is intended to detect longitudinal discontinuities having a reflective area similar to or larger than the reference notch. The examination may not detect circumferentially oriented imperfections or short, deep defects. 9.2.2 The eddy-current examination referenced in this specification has the capability of detecting significant discontinuities, especially of the short, abrupt type. 9.2.3 The flux leakage examination referred to in this specification is capable of detecting the presence and location of significant longitudinally or transversely oriented disconti- nuities. The provisions of this specification only require longitudinal calibration for flux leakage. Different techniques need to be employed for the detection of differently oriented imperfections. 9.2.4 The hydrostatic test referred to in Section 8 is a test method provided for in many product specifications. This test has the capability offinding defects ofa size permitting the test fluid to leak through the tube wall and may be either visually seen or detected by a loss of pressure. This test may not detect very tight, through-the-wall defects or defects that extend an appreciable distance into the wall without complete penetra- tion.

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