1. Standard: ASTM A554, JIS G3446.
2. Grade: 201, 202, 301, 304, 304L, 316,316L
3. Outer diameter (mm):
9.5,12.7,16,17,18,19,20,22,23,25,28,32 ,36,38,47,51,60,63,73,76,89,102,114,133,141,159,219
4. Wall thickness: 0.25mm to 3.0mm
5. Tolerance:
a) Outer diameter: +/-0.15m...
Products: wood spiral stair,
custom spiral notebooks