Standard Specification for Wrought High-Strength Ferritic Steel Butt-Welding Fittings
|Publication Date:||1 November 2010|
This specification covers wrought high-strength ferritic steel butt-welding fittings of seamless and electric fusionwelded construction covered by the latest revisions of ASME B16.9 and MSS-SP-75. Butt-welding fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A 960/A 960M. These fittings are for use in high-pressure gas and oil transmission and distribution systems.
Optional supplementary requirements are provided for fittings when a greater degree of examination is desired. One or more of the supplementary requirements may be specified in the order.
This specification does not cover cast-welding fittings or fittings machined from castings.
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. Unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.
*A Summary of Changes section appears at the end of this standard.