cast iron pipe fittings-elbow, wye, san tee under ASTM A888 & A74. ... used in building install, washing room. cast iron pipe fittings-elbow, wye, san teeUse range: building install, dirty ... the line. Pipe Tees are widely used as pipe fittings. They are made of various materials and available in ... and finishes. Pipe tees are extensively used in pipeline networks to transport two-phase fluid mixtures.