The stainless pipe details on this site are written as four checks: grade, size, standard, and finish. Read them in that order before asking for a clarification.
Grade
- SS 304 / 304L
- SS 316 / 316L
- SS 310 / 321 / 904L
- Duplex 2205 / 2507
Size
- Outside diameter: 6mm to 610mm
- Thickness: 0.5mm to 25mm
- Length: 6 metre, or custom
Standard
ASTM A312 / A213, ASTM A269 / A554, and ASTM A790 are the standards referenced on the line.
Finish
Mirror polish, matt or brush, and BA / 2B. The finish is separate from the grade: the same grade can be ordered in more than one surface.
Mild steel pipes and tubes are a different family, specified as ERW / GI from 15mm to 350mm NB. Those details sit under pipes and tubes.
All notes