Specialty Piping Products is one of North Americas largest stocking distributors of Seamless Alloy Buttweld Fittings in: Grades: WP-11, WP-22, WP-91, WP-5 & WP-9 Sizes: 1" -24" Schedules: STD - XXHWe ship worldwide with most export shipments including export packaging shipping within 48 hrs.