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All AL-6XN tubing and fittings supplied by CSI shall be provided to the following criteria.
Surface Finish Options
Mechanically Polished Tubing and Fittings (-P7 & -7)
The outside of the tube shall be mechanically polished to a surface finish comparable to a 150 grit or better and considered to be equivalent to a No. 4 finish as defined in 3-A Sanitary Standards.
The interior surfaces shall be drawn or mechanically polished to a 32 Ra maximum finish for sizes ½” through 4” diameter. No interior surface finish
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reading above 32Ra is acceptable unless dimensionally defined in the following table.
Electropolished Tubing and
Fittings (-P25)
The outside of tubing and fittings shall be mechanically polished or drawn to a 32 Ra maximum finish. The interior surfaces shall be mechanically polished or as drawn to a 25Ra maximum finish for sizes ½” to 4” diameter. The electropolishing process may increase the Ra values post electropolishing and have areas of preferential etching (e.g. frosting, shadowing, ect). Final Ra values for electropolished tubing and fitting shall not be used as criteria of acceptance for this product. |
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Mechanically Polished "-P7 and -7" Designations, Dimensional
Tolerances and Surface Finish
Dimensional Tolerances for Tubing with Finish Designation Type "-P7"
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| Tubing Description |
Outside Diameter |
Wall Thickness |
| Nominal |
Tolerance |
Wall Thickness |
Tolerance |
| 1/2" x 0.65" wall |
0.500"
(12.7 mm ) |
±0.005"
(±0.13 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 3/4" x 0.65" wall |
0.750"
(19.1 mm ) |
±0.005"
(±0.13 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 1" x 0.65" wall |
1.000"
(25.4 mm ) |
±0.005"
(±0.13 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 1 1/2" x 0.65" wall |
1.500"
(38.1 mm ) |
±0.008"
(±0.20 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 2" x 0.65" wall |
2.000"
(50.8 mm ) |
±0.008"
(±0.20 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 2 1/2" x 0.65" wall |
2.500"
(63.5 mm ) |
±0.010"
(±0.25 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 3" x 0.65" wall |
3.000"
(76.2 mm ) |
±0.010"
(±0.25 mm) |
0.065"
(1.65 mm) |
±12.5% of wall |
| 4" x 0.83" wall |
4.000"
(101.6 mm ) |
±0.015"
(±0.38 mm) |
0.083"
(2.11 mm) |
±12.5% of wall |
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Dimensional Tolerances for Fittings with Finish Designation Type "-7"
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| Nominal OD Size (inches) |
OD Tolerance |
Catalog Length Tolerance |
Squareness of Elbow or Tee Branches |
Wall Thickness |
Fitting Wall Thickness Tolerance |
| 1/2 |
±0.010"
(±0.25 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 3/4 |
±0.010"
(±0.25 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 1 |
±0.010"
(±0.25 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 1 1/2 |
±0.016"
(±0.40 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 2 |
±0.016"
(±0.40 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 2 1/2 |
±0.020"
(±0.50 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 3 |
±0.020"
(±0.50 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.065"
(1.65 mm) |
±0.008/-010"
(±0.20/-0.25 mm) |
| 4 |
±0.030"
(±0.76 mm) |
±0.050"
(±1.27 mm) |
90° ± 2° |
0.083"
(2.11 mm) |
±0.010/-017"
(±0.20/-0.43 mm) |
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Electropolished "-P25" Designation, Dimensional Tolerances and
Surface Finish
Dimensional Tolerances for Tubing with Finish Designation Type "-P25"
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| Tubing Description |
Outside Diameter |
Wall Thickness |
| Nominal |
Tolerance |
Wall Thickness |
Tolerance |
| 1/2" x 0.65" wall |
0.500"
(12.7 mm ) |
±0.005"
(±0.13 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 3/4" x 0.65" wall |
0.750"
(19.1 mm ) |
±0.005"
(±0.13 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 1" x 0.65" wall |
1.000"
(25.4 mm ) |
±0.005"
(±0.13 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 1 1/2" x 0.65" wall |
1.500"
(38.1 mm ) |
±0.008"
(±0.20 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 2" x 0.65" wall |
2.000"
(50.8 mm ) |
±0.008"
(±0.20 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 2 1/2" x 0.65" wall |
2.500"
(63.5 mm ) |
±0.010"
(±0.25 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 3" x 0.65" wall |
3.000"
(76.2 mm ) |
±0.010"
(±0.25 mm) |
0.065"
(1.65 mm) |
±10% of wall |
| 4" x 0.83" wall |
4.000"
(101.6 mm ) |
±0.015"
(±0.38 mm) |
0.083"
(2.11 mm) |
±10% of wall |
| These tolerances comply with ASME BPE part DT. |
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Dimensional Tolerances for Fittings with Finish Designation Type "-P25"
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| Nominal OD Size (inches) |
OD Tolerance |
Catalog Length Tolerance |
Min. Length of Straight Tangent |
Perp. of Face to Tangent |
Face to Face Squareness, Off Angle |
Wall Thickness |
Fitting Wall Thickness Tolerance |
| 1/2 |
±0.005"
(±0.13 mm) |
±0.050"
(±1.27 mm) |
1.50"
(38.10 mm) |
0.005"
(0.13 mm) |
0.014"
(0.36 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 3/4 |
±0.005"
(±0.13 mm) |
±0.050"
(±1.27 mm) |
1.50"
(38.10 mm) |
0.005"
(0.13 mm) |
0.018"
(0.46 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 1 |
±0.005"
(±0.13 mm) |
±0.050"
(±1.27 mm) |
1.50"
(38.10 mm) |
0.008"
(0.20 mm) |
0.025"
(0.64 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 1 1/2 |
±0.008"
(±0.20 mm) |
±0.050"
(±1.27 mm) |
1.50"
(38.10 mm) |
0.008"
(0.20 mm) |
0.034"
(0.86 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 2 |
±0.008"
(±0.20 mm) |
±0.050"
(±1.27 mm) |
1.50"
(38.10 mm) |
0.008"
(0.20 mm) |
0.043"
(1.09 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 2 1/2 |
±0.010"
(±0.25 mm) |
±0.050"
(±1.27 mm) |
1.50"
(38.10 mm) |
0.010"
(0.25 mm) |
0.054"
(1.37 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 3 |
±0.010"
(±0.25 mm) |
±0.050"
(±1.27 mm) |
1.75"
(44.45 mm) |
0.016"
(0.41 mm) |
0.068"
(1.73 mm) |
0.065"
(1.65 mm) |
±0.005/-010"
(±0.13/-0.25 mm) |
| 4 |
±0.015"
(±0.38 mm) |
±0.050"
(±1.27 mm) |
2.00"
(50.80 mm) |
0.016"
(0.41 mm) |
0.086"
(2.18 mm) |
0.083"
(2.11 mm) |
±0.008/-012"
(±0.20/-0.30 mm) |
| These tolerances comply with ASME BPE part DT. |
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The American Society of Mechanical Engineers (ASME) has prepared a standard intended for design, materials, construction, inspection, and testing of vessels, piping and related accessories such as pumps, valves and fittings for use in the biopharmaceutical industry, referred to as ASME BPE. Items with a “- P25” surface finish designation are the only standard fittings and tubing offered that are in accordance with ASME BPE dimensions and tolerances as stated in part DT. Due to the manufacturing processes, not all surface finish requirements can be met as stated in part SF. |
For more information about CSI AL-6XN specifications, give us a call today at 800.654.5635.
