Sanitary Tubing

Wisconsin and the dairy industry are synonymous and United Industries has been involved since the beginning of the modern sanitary and dairy industry. Both industry segments require clean and polished tubing with strict material control and identification. United Industries has provided quality ASTM A270 tubing that meets demanding chemical and manufacturing environments.

Size Range

1/2″ – 8″

Wall Thickness

.019″ – .145″

Mechanical Tests

United Industries performs all required ASTM A270/A1016 testing. In addition, we also perform flare, flatten, flange, and reverse bend tests. Surface roughness is measured per ASME/ANSI B46.1 requirements. These measurements are derived from four (4) readings taken at cross sections approximately 90 degrees apart.


Sanitary A270 (3A) TPV Certified: Bright Annealed, ID-only, OD-only, ID & OD. All mechanical polished tubes meet or exceed A270, 3A, A270-S2,


All material is end capped and poly sleeved. Tubes are packaged in tri-wall cardboard boxes with wood ends. Other packaging available upon request. Material Test Reports are shipped with all tubing. ISO/TS16949:2009 Registered Quality Management System

ASTM Chemical Composition Requirements (Max.)

(C) Carbon, max0.0300.030
(Mn) Manganese, max.2.0002.000
(P) Phosphorus, max0.0450.045
(S) Sulphur, max0.0300.030
(S) Sulphur, A270-S2N/A0.005-.017
(Si) Silicon, max0.7500.750
(Ni) Nickel8.0-12.010.0-14.0
(Cr) Chromium18.0-20.016.0-18.0
(Mo) MolybdenumN/A2.0-3.0




  • ASTM SA249 Boiler / Heat Exchanger
  • ASTM A268 Ferritic
  • ASTM A269 General Services
  • ASTM A270 Sanitary / Pharmaceutical
  • ASTM A554 Ornamental


  • 1″ – 60′


  • Stainless 301 302, 304, 304L, 316, 316L, 309, 309S, 310, 321, 12SR/408CB, 18SR. 18CB/441, 29-4C, 317, 317L
  • Stainless 405, 409, 410, 430, 439
  • Super Alloys


  • Square pack, scored cardboard, tri-wall box, paper/poly sleeve, interleave, interweave, cardboard tubes, hex pack, bulk skids, customer returnables
  • Export packaging available

Plant Facilities

  • Over 130,000 Sq. Ft. (Selmer, TN)
  • 6 laser mills
  • In line induction annealing and H-BA
  • Tube cutting facility

Quality Assurance / Testing

  • Quality Management System
  • In line Eddy Current
  • Expansion
  • Flatten
  • Tension
  • Rockwell
  • Metallurgical
  • Dimensional
  • Bend
  • Flare
  • Reverse Bend
  • Flange
  • Surface Roughness
  • Surface Passivity
  • Others upon request

Finished Inventory

  • Sanitary and H-BA 1″– 8″, 304L and 316L

Our Products

View all of our other products

Sanitary Tubing


Evaporator/Heat Exchanger

Stainless Steel Automotive Tubing

Stainless Steel Ornamental Tubing

Stainless Steel HVAC

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