Classification of ASTM A815 WP pipe fittings
ASTM A815 Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings Class WP fittings are subdivided into four subclasses: Class WP-S fittings are those manufactured form seamless product by a seamless method of manufacture;Class WP-W fittings are those which contain welds where the fitting fabrication or construction welds have been radiographed;Calss WP-WX fittings are those…