... Process:free forgingDie F OEM main bearing connecting rod 1.Material a)carbon steel SA234 WPB, SA234 ... DIN 1629 St37, RST37.2 St52 b)Stainless Steel: ASTM/ASME SA403 304,304L ,316, 316L, WP304L, 3 ... WP12, WP11,WP22, WP5, WP9, WP91.ASTM B361 GR.3003-6061, ASTM B366 UNS N04400,N08800, N08825 N1001-N10276 ... -N10665, WPT2-WPT12.ASTM 182 F1, F5, F6, F7, F9, F11, F12 ...