ASTM B804-02(R2018) pdf free download

ASTM B804-02(R2018) pdf free download.Standard Speci fication for UNS N08367 and UNS N08926 Welded Pipe
1. Scope
1.1 This specification covers UNS N08367 and UNS N08926 welded pipe for general corrosion applications. (Al- though no restrictions are placed on the sizes of pipe that may be furnished under this specification, commercial practice is commonly limited to sizes not less than 8 in. nominal diam- eter.) 1.2 Six classes of pipe are covered as follows: 1.2.1 Class 1 pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed. 1.2.2 Class 2 pipe shall be double welded by processes employing filler metal in all passes. No radiography is re- quired. 1.2.3 Class 3 pipe shall be double welded by processes employing filler metal in all passes except the inside root weld may be made without the addition of filler metal. Welds are to be completely radiographed. 1.2.4 Class 4 pipe shall be double welded by processes employing filler metal in all passes except the inside root weld may be made without the addition of filler metal. No radiog- raphy is required. 1.2.5 Class 5 pipe shall be single welded by processes employing filler metal in all passes except that the pass exposed to the inside pipe surface may be made without the addition of filler metal. Welds are to be completely radio- graphed. 1.2.6 Class 6 pipe shall be single welded by processes employing filler metal in all passes except that the pass exposed to the inside pipe surface may be made without the addition of filler metal. No radiography is required. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 The following safety hazards caveat pertains only to the test methods portion, Section 13, of this standard: This stan-dard 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limi- tations 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.
5. Materials and Manufacture
5.1 Materials- -The starting material shall conform to the requirements of Specification B688 for UNS N08367 and Specification B625 for UNS N08926. 5.2 Manufacture: 5.2.1 The joints shall be double or single welded, full penetration welds made in accordance with ASME Boiler and Pressure Vessel Code, Section IX. 5.2.2 The welds shall be made either manually or automati- cally by an electric process involving the deposition of filler metal according to the class specified.5.2.3 The weld surface on either side of the weld shall be flush with the base plate or shall have a reasonably uniform crown, not to exceed /8 in. (3.2 mm). Any weld reinforcement may be removed at the manufacturer ‘s option or by agreement between the manufacturer and purchaser. The contour of the reinforcement shall be reasonably smooth and free of irregu- larities. The deposited metal shall be fused uniformly into the plate surface. No concavity of contour is permitted unless the resulting thickness of weld metal is equal to or greater than the minimum thickness of the adjacent base metal. 5.2.4 Weld defects shall be repaired by removal to sound metal and rewelding. Subsequent heat treatment and inspection shall be as required on the original welds. 5.3 Heat Treatment- -The recommended heat treatment shall consist of heating to a minimum temperature of 2025°F for UNS N08367 and 2012°F for UNS N08926 followed by quenching in water or rapidly cooling by other means.