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Practical notes on flanges, fittings, quality and the work of building to spec.
Choosing a flange pressure class: what 150#, 300# and 600# really mean
Pressure class is not a pressure rating. Here's how temperature and material decide what a flange can actually hold.
TETeshi Engineering Team
24 Sept 2026 · 1 min read
Weld neck or slip-on? Choosing the right flange type
Two of the most common flange types, two very different jobs. A practical comparison for plant and project teams.
TETeshi Engineering Team
12 Sept 2026 · 1 min read
How to read a mill test certificate in five minutes
An MTC tells you whether the steel you received is the steel you ordered. Here's what to check first.
TQTeshi Quality Team
28 Aug 2026 · 1 min read