A815/A815M-18 Standard Specification for Wrought Ferritic,Ferritic/Austenitic, and MartensiticStainless Steel Piping Fittings

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Designation: A815/A815M- 18 Standard Specification for Wrought Ferritic,Ferritic/Austenitic, and MartensiticStainless Steel Piping Fittings11. ScopeR1.1 This specification covers two general classes，WP andCR,of wrought ferritic, ferritic/austenitic,and martensiticstainless steel fittings of seamless and welded constructioncovered by the latest revision of Specification A960A96OM.Fittings differing from these standards may be furnished inaccordance with Supplementary Requirement S58 of Specifi-cation A960WA96OM.1.1.1 Class WP fittings are subdivided into four subclasses:Classes WP-S.WP-W,WP-WX,and WP-WU. They aremanufactured to the requirements of Specification A960A960M, and they shall have pressure ratings compatible with13.2.Class WP-S fittings are those manufactured from seam-less product by a seamless method of manufacture (markedwith class symbol WP-S); Class WP-W fittings are those whichcontain welds where the fitting fabrication or constructionwclds have been radiographed (marked with class symbolWP-W)y; and Cllass WP-WX fittings are those which containwelds where all welds have been radiographed (marked withclass symbol WP-WXy:and Class WP-wU fittings are thosewhich contain

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