http://www.oawellscreen.com/stainless-steel-pipe/
Product Description
SUS304 304L 316L rectangular /square pipe
1.Welded and seamless
2.thickness.25-100mm
3.OD:6-1200mm
Tolerancea) Outer Diameter: +/- 0.1mm
b) Wall Thickness: +/- 0.02mm
c) Length: +/- 5mm
Surface180G, 320G, 400G Satin / Hairline 400G, 500G, 600G or
800G Mirror finish and so on.
Standard AISI, ASTM, DIN, EN, GB and JIS
ASTM A213,ASTM A312,ASTM A269,ASTM A778,ASTM A790