Stainless steel rectangle pipe:
1. Standard: ASTM A554
2. outside diameter: 20 x 10mm-150 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: 
   20 x 10mm-38 x 25mm-<0.15mm
   50 x 25mm-75 x 45mm-<0.20mm
   95 x 45mm-150 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