Tube Methods - Manufacturer of Stainless Steel & High Temperature Alloy Tubing



General Information

Standard and specialty tubing is available in a variety of alloys to meet your specific applications. Stainless steel alloy, high temperature alloys, corrosion resistant alloys and nickel alloys. Most alloys are available as seamless or welded and drawn tubing.

Size Limits and Tolerances
Tube Methods’ sizes range from 0.030” to 1.250” outside diameter (OD) and 0.003” to 0.280” wall. The table (see reverse) provides standard sizes and tolerances. Please consult the Sales Department if closer or different tolerances are required.


  • OD tolerances are measured using micrometers. Laser micrometers are used for thin walls or extra close tolerances. Ovality will be within the OD tolerance for tubes where the wall thickness is at least 3% of the nominal OD.
  • ID tolerances require special definition because of different interpretations. Three methods of inspection are described here.
Standard Unspecified Tolerances*
Tube OD (inches) Outside Diameter Inside Diameter Wall Thickness
Up to and including 0.2505” ±0.002” ±0.002” +/-10%
0.251” through 0.5005” ±0.003” ±0.003” +/-10%
0.501” through 0.7505” ±0.004” ±0.004” +/-10%
0.751” through 1.250” ±0.005” ±0.005” +/-10%
* Custom tolerances are available upon request.

Eccentricity: The difference between the center of the circle formed by the tube OD and the center of the circle formed by the tube ID. Commercial tolerance for eccentricity is +/-10% of average wall thickness (20% TIR).
- Closer tolerances can be supplied if required.

Straightness: Commercial straightness is 0.010" per foot of length; that is, a tube 10 feet long will be straight within 0.100."
- Closer tolerances can be supplied if required.

Length Tolerance:
- Random Lengths: +/-3.5 feet.
- Cut Lenghts: Up to and including 1 foot: +/- 0.010"; over 1 foot tolerances: +0.125" -0.
- Closer tolerances can be supplied if required.

Shape Tube Tolerances: Major axis +/-0.005"; minor axis +/-0.003."
- Closer tolerances can be supplied if required.

Surface Roughness: Special OD and ID surfaces are available.
- Contact our Sales Department with specific requirements.

- Annealed is standard but 1/8, 1/2 and full hard are also available.
- Customer specified hardnesses and tempers are also available.


Go/No-Go Plug Gauge: The Go Plug will go into the ID of the tube. The No-Go Plug will not start. For example..0.250” +0/-0.004” ID tube, a 0.246” plug will go into the ID of each tube. A 0.250” plug will not start. Note that a 0.250” plug will not fit into a 0.250” hole. This is the standard method for inspecting tubing and will be used unless otherwise specified at time of inquiry.

Go Thru/No-Go Through Plug Gauge: The Go Plug will pass freely through the entire length of the tube. The No-Go Plug may start but will not go freely into the ID for the length of the plug.

ID Micrometer : When size permits, tubes may be measured with an ID micrometer. Results may be different than those measured with plug gauges. Also ID micrometers may be “three-point” micrometers that will measure average ID or “two-point” which will measure the high and low values.


Stainless Steels
304/304L 310 316/316L
321 347 403
410 430 446

High Temperature and Corrosion Resistant Alloys
188 214 230
242 556 600
625 718 800/800HT
825 902 B2/B3
C-22 C-276 C-2000
HR120 HR160 In 102
K-Monel 500 L-605 Monel 400
X X-750  

Other Alloys
4130 Beryllium Copper Alloys
CDA 122 Phosphorous Bronze
Nickel 200  





416 Depot Street P.O. Box 460 Bridgeport, PA 19405 ph 610.279.7700 fx 610.277.2005 web
||About Tube Methods | General Info | Mechanical Properties - Stainless Steel | High Temperature & Corrosion Resistant Alloys | Mechanical Properties - High Temperature & Corrosion |
Stainless Steel Tubing | Tube Methods Brochure | Tube Methods Inserts | JP Products Brochure | JP Products Website | Capabilities | Quote Form | Contact Us
Copyright © 2012 Tube Methods, Inc. Website by B2B Design & Development LLC