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MSS SP97 Carpenter 20Cb-3 ASTM B462 UNS N08020 Alloy 20 weldolet sockolet threadolet nipolet flangolet 1. MSS SP97 Carpenter 20Cb-3 ASTM B462 UNS N08020 Alloy 20 weldolet sockolet threadolet nipolet ...