A234 WP9 Pipe Fittings 1. Elbow, reducer, tee, cross, pipe cap and bend. 2. Superior quality 3. Reasonable price A234 WP9 Pipe FittingsStandard Specification: Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service. The material for fittings shall consist of killed steel, forgings, bars, plates, seamless or fusion welded tubular products with filler metal ...