METALS · LOW ALLOY STEEL
Low alloy steels add small amounts of chromium and molybdenum to carbon steel so it keeps its strength at high temperature and pressure — the material of boilers, refinery piping and pressure vessels. The pieces listed here are mostly project surplus from UAE oil, gas and power work.
Stock turns over piece by piece — what's listed is what exists. Post the spec you need and we match it against incoming material; you're alerted the moment something lands.
SA387 Gr.11 and Gr.22 are the standard Cr-Mo pressure-vessel plates; SA335 P11 and P22 are their piping counterparts; 16Mo3 covers elevated-temperature service on European specs. These grades are ordered against project bills of quantity, and when scope changes, certified surplus lands on the market — often unused, sometimes still in original packing.
For pressure work, traceability is the whole game. Look for the MTC badge on a listing: it means an EN 10204 3.1 or 3.2 certificate exists and is released to you once the order is confirmed, with heat numbers to match against the piece.
Common grades in this family: SA387 Gr.11 · SA387 Gr.22 · SA335 P11 · SA335 P22 · 16Mo3
The chromium and molybdenum additions let it hold strength and resist creep at temperatures where plain carbon steel weakens. That is why pressure codes specify grades like SA387 for hot service.
Almost always — pressure codes require traceable material. Buy from listings with the MTC badge; the certificate is released after your order is confirmed.
Mostly oil, gas and power projects in the UAE: scope changes, over-ordering against contingency, and cancelled packages. The sellers are established fabricators and contractors we work with directly.