Size D(mm) T(mm) A(inch) 1" 25.4 1.65 2 1.5" 38.1 1.65 2 3/4 2" 50.8 1.65 3 1/2 2 1/2" 63.5 1.65 4 1/4 3" 76.2 1.65 5 4" 101.6 2.11 6 5/8 * Stainless Steel 304 and 316L available. * Certified by 3-A Sanitary 63-03 standards for sanitary fittings. (#3572) * Polished ID & OD ( Ra<=0.8 um). * Material fully complies with 3-A standard, low carbon content. * Material Test Certificate available with Heat number upon request.