Stainless steel square pipe:
1. Standard: ASTM A554
2. Outside diameter: 15 x 15mm-100 x 100mm
3. Wall thickness: 0.25mm-4mm
4. Length: 6m
5. Material: 201, 202, 304, 316, 430 or according to customers' requests
6. Tolerance: 
  a. Out diameter: 
   15 x 15mm-25 x 25mm-<0.15mm
   30 x 30mm-50 x 50mm-<0.20mm
   60 x 60mm-100 x 100mm-<0.30mm
  b. Thickness: 
   0.25mm-1.0mm-±0.02mm
   1.0mm-4.0mm-±0.03mm 
7. Polishing: 400#, 320#, 180#, 240#, 80# and hair line

Packing: 
Each in a plastic bag or as customers' requirement