... (1/2''-24'')MaterialASTM/ ASMEA234 WPB WPC; A234 WP1-11-12-22-5-9-91; A403 WP304-304L-304H-304LN-304N ... -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, X2CrNiMo18 ...