... 1) Types: Seamless and butt-welded elbows2) Size: 3 1/2" DN15-DN12003) Wall Thickness: STD4) Standard: ASME, ANSI, API, ... cooperation.Size1/2''- 96'' DN15-DN2400TypeLR, BW, SMLS(1/2''-24'')MaterialASTM/ ASMEA234 WPB WPC; A234 WP1-11-12-22-5- ... X6CrNiTi18-10, X6CrNiNb18-10, X1CrNi25-21, X2CrNiMo17-12-2, X5CrNiMo17-12-2, X6CrNiMoTi17-12-2, X2CrNiMo 17-12-3, X2CrNiMoN17-13-3, X3CrNiMo17-13-3, X2CrNiMo18 ...