BLACKRIVER
Stainless Tube

BLACKRIVER
Stainless Tube

Versatile & Adaptive

Versatile & Adaptive

Materials For Those Special Applications

Supplying You With The Materials You Need For Those Special Applications

Materials For Those Special Applications

Supplying You With The Materials You Need For Those Special Applications

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About Us

BLACKRIVER Stainless Tube Inc.

Can't seem to find what you are looking for? We specialize in supplying Exotic and uncommon sizes (metric and inches) in the metal industry. With over 30 years in the business, our experience and expertise will help you solve your most challenging pipping steel tube needs.
Stainless Steel

Stainless Steel Pipe

Approved/Non approved mill
Pressure fittings and flanges
Now in stock 316H Plate in the USA
Our vision

Exotic Tubing and Fittings

Welded and Seamless
Sheet/Plate
Nickel Alloys
Cobalt Alloys

Strength & Quality According to Standard

The following formulas are used to determine quality and strength

Barlow's Formula is Used to Determine

Barlow's Formula is Used to Determine
  • Internal Pressure at Minimum Yield
  • Ultimate Bursting Pressure
  • Maximum Allowable Operating Pressure
  • Mill Hydrostatic Test Pressure

The Formula is Expressed as P=2St/D

  • P = pressure, psig
  • = nominal wall thickness, in inches (i.e. .375)
  • D = outside Diameter in inches
  • S = allowable stress in psi, which depends on the pressure being determined utilizing Yield or Tensile depending on what is trying to be determined

For Example

Internal Pressure at Minimum Yield:
S = SMYS - minimum yield for grade of pipe
Ultimate Bursting Pressure
S = SMTS - minimum tensile strength for grade of pipe
Maximum Allowable Operating Pressure
S = SMYS - reduced by a design factor
Mill Hydrostatic Test Pressure
S = SMYS - reduced by a design factor depending on OD and grade

We supply the industry with custom Pipes Fittings & Weights Let's deliver the right solution for your project.

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