32 piping interview questions and answers for 2026 by Aienginear — elbows, eccentric reducers, olets, NPS and schedules, pipe vs tube, material selection, flanges, valves, layout rules and ASME B31.3 testing, with printable tables, diagrams and a self-test quiz.
How pipe fittings are manufactured: hot mandrel and cold-formed elbows, hydraulic bulge and hot extrusion tees, reducers, caps and stub ends, with ASME B16.9-2024 and ASTM A234/A403 heat treatment and testing rules.
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