Inconel Pipe and Inconel Tubing Available in Alloys 400, 600, 601, 718, 800, 800HHT, 825, Monel Alloy 400, Alloy 20, Alloy .200201 Available 200201 Available. Inconel Tube Specifications:ASTM B163, ASME SB 163, ASTM B165, ASME SB165, ASTM . B167, ASME SB167, ASTM B444, ASME SB444.