John Brady
John Brady

John Brady owns Standard of New England with his wife, Julie. He started the business in 1996 when the opportunity to purchase a failing company and turn it around presented itself. First learning about piping systems on board U.S. Coast Guard Cutters, and then at a very well-respected supplier in the Boston area, John jumped into his new business ready to learn and grow. He enjoys sharing what he has learned over the years with engineering teams, estimators, maintenance managers, pipe fitters, procurement departments, and project managers across a wide range of industries in need of complex, high-energy piping systems. Born in Boston, John now lives in the beautiful Seacoast region of New Hampshire with Julie and their three dogs: Rosalie, Emma, and Jasmine.

The Truth Behind True Schedules

18" True 40 x 10" True 80 Tees Fittings

true schedules

When talking about steel pipe and pipe fittings it is often assumed that Schedule 40 and standard weight are the same thing; likewise, that schedule 80 and extra heavy are the same thing.  These assumptions, however, are incorrect and can lead to the wrong material being installed at the jobsite.

Take a look at the wall thicknesses (in blue) on our pipe chart Look closely at the two columns for schedule 40 and standard weight.  Up through a 10-inch pipe size the wall thicknesses are the same, and the terms schedule 40 and standard weight are very often used interchangeably.  But once we start dealing with pipe and fitting sizes larger than 10-inch you can see that the wall thicknesses diverge.  The wall thickness of the standard weight pipe plateaus, remaining the same at the 12-inch size, while the wall thickness of the schedule 40 pipe continues to increase with pipe size.  You can see this divergence in the following graph:

Graphical representation of the wall thickness divergence of schedule 40 and standard weight pipe starting at 10-inch sized pipe.

The same is true for schedule 80 and extra heavy pipe and pipe fittings, except that these two diverge at 8-inch sized pipe, where the extra heavy wall thickness remains the same.  This divergence is shown in the below graph:

Graphical representation of the wall thickness divergence of schedule 80 and extra heavy pipe starting at 8-inch sized pipe.

Since schedule 80 and extra heavy share the same wall thickness with smaller pipe and fitting sizes, there is often some confusion when quoting customers on pipe sizes above the point of wall thickness divergence.  Above these points of wall thickness divergence, it is especially important to read customer specifications carefully and clarify as necessary. 

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Standard of New England, LLC

Standard of New England is an independent wholesale distributor, in operation since 1996. We are small enough to be responsive to our customers’ needs and big enough to deliver what our customers want when they want it.  Our specialty is in industrial piping products, but we can also provide much more.  We are proud to have local, national, and international customers who come back to us time and time again because of our industrial knowledge and personal customer service.  

We offer a wide range of products including: PipeValvesFittingsFlangesMetal & Fabric Expansion JointsIndustrial DampersRubber Expansion JointsMetal Flex ConnectorsEngineered Plastics, PolypropyleneFusion ToolsHardwareGaskets and More. These products are available in a range of Metals & Materials to meet all your industrial application needs.

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