... available. 1) Types: Seamless and butt-welded elbows2) Size: 3 1/2" DN15-DN12003) Wall Thickness: STD4) Standard: ASME, ANSI, ... -21, X2CrNiMo17-12-2, X5CrNiMo17-12-2, X6CrNiMoTi17-12-2, X2CrNiMo 17-12-3, X2CrNiMoN17-13-3, X3CrNiMo17-13-3, X2CrNiMo18-14-3, X2CrNiMoN17-13-5 ... 20-5, X1CrNiMoCuN20-18-7, X1NiCrMoCuN25-20-7, X2CrNiMoN22-5-3, X2CrNiN23-4, X2CrNiMoN25-7-4, X2CrNiMoCuWN25-7-4, X2CrNiMoCuN25 ...