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Steel Pipes - De-Rating vs. Temperature

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Temperature derating factors of steel pipes due to stress are indicated below:

Steel Pipes - De-Rating Factor vs. Temperature
TemperatureDerating Factor
(oF)(oC)
< 250 < 121 1.00
250 - 300 121 - 149 0.97
300 - 350 149 - 177 0.93
350 - 400 177 - 204 0.90
400 - 450 204 - 233 0.87
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Related Topics

Pressure Ratings of Pipes and Fittings

Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more.

Related Documents

ANSI B16.5 - Steel Pipe Flanges - Pressure and Temperature Ratings - Group 1.2.

Pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings

Carbon and Stainless Steel Flanges - ASME/ANSI Class 150

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Carbon and Stainless Steel Flanges - ASME/ANSI Class 300

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Maximum temperature and pressure ratings of flanges conforming dimensions ASME B16.5 and materials specification ASTM A-105.

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Carbon Steel Pipes - Pressure and Temperature Ratings, Metric Units

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Allowable pressure for standard seamless A312-TP316/316L stainless steel pipes - temperatures 100oF to 750oF.

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Increased temperatures derates the strength of thermoplastic piping materials.

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