AI for pipe spool fabricators, tested on spools your shop has already quoted and shipped.

Every closed job has been graded already. A project your estimators worked up has the sheet behind the number, and a system you shipped has the package your quality manager released. A draft can sit beside either one, joint by joint and line by line, with nobody having to invent what right looks like.

Shop fabrication has rules of its own. The Pipe Fabrication Institute, formed in 1913, keeps its own standards for this work. ES-03, Fabricating Tolerances, in its 2024 edition, is written for prefabricated piping assemblies and leaves field-erected pipe out. ES-02 deals with dimensioning piping assemblies, and ES-31 with protecting the ends of fabricated ones. A spool job starts with someone else's isometric and ends at your dock, which makes its paperwork different from a contractor's field takeoff.

Three books, three kinds of customer. ASME's page for B31.1, Power Piping, names power stations, industrial and institutional plants, and central and district heating and cooling. B31.3, Process Piping, names refineries and chemical, pharmaceutical, semiconductor and cryogenic plants. B31.9, Building Services Piping, covers industrial, institutional, commercial and public buildings without B31.1's range of sizes, pressures and temperatures. The draft names the book a project cites, and your people judge what follows from it.

Owners write piping books of their own. The University of Iowa's chilled water plant standard runs to 21 piping specifications, each with its own code, service and design conditions. Condenser water alone has separate sheets for ductile iron, carbon steel and stainless steel, and the design code cell on its chilled water sheet reads B31.1, where someone guessing from the service might have expected B31.9. A sheet like that, more than any general rule, is what your estimators actually read.

Some spools end up under a state's rules. Minnesota defines a high pressure piping system as a steam or heating media system, an ammonia system used for refrigeration, or a bioprocess system, so a plant's ammonia refrigeration spools can fall inside that definition. Kentucky's boiler regulation, 815 KAR 15:025, names B31.1, B31.3, B31.5, B31.9 and B31.12 for new pressure piping connected to a boiler or pressure vessel. Those duties reach the people installing and owning the pipe, and they help explain why a customer asks your shop for the records it does. We mention them for context, and nothing on this page is legal or engineering advice.

One limit covers both jobs. The proof of concept never touches your estimating or shop system, a CAD model, a live quote or a live package. It never prices a spool, judges a weld or an examination result, or releases anything. An estimator approves every quote and a quality manager releases every package. Defense and aerospace work stays out.