| Sr. | Details | Standard |
| 1 | Pipe Threads, General Purpose (Inch) | B1.20.1 |
| 2 | Dryseal Pipe Threads (Inch) | B1.20.3 |
| 3 | Cast Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 | B16.1 |
| 4 | Malleable Iron Threaded Fittings: Classes 150 and 300 | B16.3 |
| 5 | Gray Iron Threaded Fittings: Classes 125 and 250 | B16.4 |
| 6 | Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch Standard | B16.5 |
| 7 | Factory-Made Wrought Buttwelding Fittings | B16.9 |
| 8 | Face-to-Face and End-to-End Dimensions of Valves | B16.10 |
| 9 | Forged Fittings, Socket-Welding and Threaded | B16.11 |
| 10 | Cast Iron Threaded Drainage Fittings | B16.12 |
| 11 | Ferrous Pipe Plugs, Bushings, and Locknuts With Pipe Threads | B16.14 |
| 12 | Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed | B16.20 |
| 13 | Nonmetallic Flat Gaskets for Pipe Flanges | B16.21 |
| 14 | Buttwelding Ends | B16.25 |
| 15 | Wrought Steel Buttwelding Short Radius Elbows and Returns | B16.28 |
| 16 | Valves — Flanged, Threaded, and Welding End | B16.34 |
| 17 | Orifice Flanges | B16.36 |
| 18 | Large Metallic Valves for Gas Distribution (Manually Operated, NPS 21/2 to 12, 125 psig Maximum) | B16.38 |
| 19 | Malleable Iron Threaded Pipe Unions | B16.39 |
| 20 | Ductile Iron Pipe Flanges and Flanged Fittings, Classes 150 and 300 | B16.42 |
| 21 | Large Diameter Steel Flanges (NPS 26 Through NPS 60) | B16.47 |
| 22 | Steel Line Blanks | B16.48 |
| 23 | Welded and Seamless Wrought Steel Pipe | B36.10 |
| 24 | Stainless Steel Pipe | B36.19 |
| 25 | Pipe Hangers and Supports – Materials, Design, Manufacture, Selection, Application, and Installation | MSS-SP-58 |
| 26 | Socket Welding Reducer Inserts | MSS-SP-79 |
| 27 | Class 300 Steel Pipe Unions, Socket Welding and Threaded | MSS-SP-83 |
| 28 | Swage(d) Nipples and Bull Plugs | MSS-SP-95 |
| 29 | Integrally Reinforced Forged Branch Outlet Fittings – Socket Welding, Threaded and Buttwelding Ends | MSS-SP-97 |
Dimensional Standards for Piping Engineering
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