dimensional & material standards for piping components.docx

7/30/2019 DIMENSIONAL & MATERIAL STANDARDS FOR PIPING COMPONENTS.docx

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DIMENSIONAL STANDARDS FOR PIPING COMPONENTS

By Peter Smith from Piping Materials Guide: Selection and Applications

Type of Component Function Butt-Weld Ends Threaded-Socket-Weld

Ends

Material Standard

90 long radius (LR) elbow Change direction ASME B16.9 (1/2-48 in.) ASME B16.11 (1/2-4 in.)

90 short radius (SR)

elbow

Change direction ASME B16.28 (1/2-48 in.) Not applicable

45 Elbow Change direction ASME B16.9 (1/2-48 in.) ASME B16.11 (1/2-4 in.)

180 return Change direction ASME B16.9 (1/2-48 in.) Not applicable

Equal tee Change direction ASME B16.9 (1/2-48 in.) ASME B16.11 (1/2-4 in.)

Reducing tee Change direction and size ASME B16.9 (1/2-48 in.) ASME B16.11(1/2-4 in.)

Reinforced branch (O'let)

Change direction and size Manufacturer's standard Manufacturer's standard

Eccentric reducer Change size ASME B16.9 (1/2-48 in.) ASME B16.11 (1/2-4 in.)

Concentric reducer Change size ASME B16.9 (1/2-48 in.) ASME B16.11 (1/2-4 in.)

Flanges Join pipe and

components

ASME B16.5 (1/2-48 in.) ASME B16.5 (1/2-24 in.)

Flanges Join pipe and

components

ASME B16.47 (26-60 in.) N/A

Couplings Join pipe and

components

N/A ASME B16.11 (1/2-4 in.)

Unions Join pipe and

components

N/A BS 3799

Spectacle blinds, spades

and spacers

Isolation Held between Flanges

API 590 or company's standards

B16.1 Cast Iron Pipe Flanges and Flanged Fittings


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B16.3 Malleable Iron Threaded Fittings, Class 150 and 300B16.4 Cast Iron Threaded Fittings, Classes 125 and 250B16.5 Pipe Flanges and Flanged Fittings

B16.9 Factory Made Wrought Steel Buttwelding FittingsB16.10 Face to Face and End to End Dimensions of ValvesB16.11 Forged Fittings, Socket Welding and ThreadedB16.12 Cast Iron Threaded Drainage FittingsB16.14 Ferrous Pipe Plugs, Bushings and Locknuts with Pipe ThreadsB16.15 Cast Bronze Threaded Fittings Class 125 and 250B16.18 Cast Copper Alloy Solder Joint Pressure FittingsB16.20 Ring Joint Gaskets and Grooves for Steel Pipe FlangesB16.21 Nonmetallic Flat Gaskets for Pipe FlangesB16.22 Wrought Copper and Copper Alloy Solder Joint Pressure FittingsB16.23 Cast Copper Alloy Solder Joint Drainage Fittings DWV

B16.24 Cast Copper Alloy Pipe Flanges and Flanged Fittings Class 150, 300,400,600, 900, 1500 and 2500B16.25 Buttwelding EndsB16.26 Cast Copper Alloy Fittings for Flared Copper TubesB16.28 Wrought Steel Buttwelding Short Radius Elbows and ReturnsB16.29 Wrought Copper and Wrought Copper Alloy Solder Joint DrainageFittings DWVB16.32 Cast Copper Alloy Solder Joint Fittings for Sovent Drainage SystemsB16.33 Manually Operated Metallic Gas Valves for Use in Gas Piping systemsUp to 125 psig (sizes through 2)B16.34 Valves Flanged, Threaded and Welding End

B16.36 Orifice FlangesB16.37 Hydrostatic Testing of Control ValvesB16.38 Large Metallic Valves for Gas Distribution (Manually Operated, NPS 2 to 12, 125 psig maximum)B16.39 Malleable Iron Threaded Pipe Unions, Classes 1150, 250 and 300B16.40 Manually Operated Thermoplastic Gs Shutoffs and Valves in GasDistribution SystemsB16.42 Ductile Iron Pipe Flanges and Flanged Fittings, Class 150 and 300B16.47 Large Diameter Steel Flanges (NPS 26 through NPS 60)


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B36.10 Welded and Seamless Wrought Steel PipeB36.19 Stainless Steel PipeOther ASME or ANSI

B73.1 Horizontal, End Suction Centrifugal PumpsB73.2 Vertical In-line Centrifugal PumpsB133.2 Basic Gas Turbine

The difference between piping codes and piping standards can be defined as:

Piping Codes: Piping codes defines the requirements of design, fabrication, use of materials, tests and inspection of pipes and piping systems.

A code has a limited jurisdiction defined by the code.

Piping Standards: Piping standards define application design and construction rules and requirements for piping components as flanges, elbows, tees,

valves etc.

A standard has a limited scope defined by the standard.

dimensional & material standards for piping components.docx

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