The Tube Brief

What changed in North American tube this week — in one email, Fridays.

Capacity and ownership moves. Trade measures with effective dates. Price actions at the mills that set them. Capability-map changes from our verification work. Every item sourced and dated; every correction flagged. Written for the people who buy, specify, and make steel tube — not for the algorithm.

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Subject line: The Tube Brief #1 — a 4,000 psi disagreement, settled

1. Welcome (3 sentences). What PTJ is, what the Brief is, the one-line disclosure, link to /methodology.
2. Lead item: A500 Grade C's yield — two authorities disagreed, we bought the standard, it's 50 ksi for every shape (link A003). One-line takeaway: specify editions on your orders.
3. Trade: ITC keeps LWR duties into the 2030s (link SP01) · 50% base-tube reality check in one paragraph (link SP02).
4. The investigation: "Can North America Make This Tube?" is live — the two requirements, RFQs out, results as they land (link flagship).
5. Capability note: 36 companies catalogued; one explicit EN/JIS claimant; verification calls underway. Labeled map publishes when response windows close.
6. What we got wrong / changed: ledger changes this week (CL-009 → Resolved).
7. Next week: Canada TRQ cross-border guide; equivalence exposé follow-ups.

(Cadence note: items 1 and 7 rotate out after issue #1; the standing sections are Lead · Trade · Investigation · Capability · Ledger changes.)