Surface Finish: TABLE SF-1
Acceptance Criteria for stainless Steel and higher Alloy
Mechanically Polished Product
Contact Surface Finishes |
| Anomaly or Indication |
Acceptance Criteria |
|
| pits |
If diameter < 0.020 in. and bottom is shiny.
Pits <0.003 in. diameter are irrelevant |
| |
nd acceptable. |
| Cluster of pits |
No more than 4 pits per each 1/2 in. X 1/2
in. inspection window. The |
| |
cumulative total of all relevant pits shall
not exceed 0.040 in. |
| Dents |
None accepted. |
| Finishing marks |
If Ra max. is met. |
| Welds |
As welded shall meet requirements of MJ-6.
If welds are finished, then shall be |
| |
smooth and blended. |
| Nicks |
None accepted. |
| Scratches |
For tubing, if cumulative length is <12.0
in. per 20 ft tube length or prorated and if |
| |
depth is <0.003 in. |
| |
For fittings, valves, and other process
components, if length is <0.25 in |
| |
cumulatively, depth <0.003 in. and Ramax. is
met. |
| |
For vessels, if length < 0.50 in. at 0.003
depth and if <3 per inspection window. |
| Surface cracks |
None accepted. |
| Surface inclusions |
If Ra max. is met. |
| Surface residuals |
None accepted, visual inspection. |
| Surface roughness (Ra) |
See Table SF-3. |
| Weld slag |
For tubing, up to 3 per 20 ft length or
prorated, if<75% of the width of the weld bead. |
| |
For fittings, valves, vessels, and other
process components, none accepted (as |
| |
welded shall meet the requirements of MJ-6
and Table Mj-3) |
| Porosity |
None open to the surface. |
HAITIMA Corporation.