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What ASTM pipe standards are acceptable for fire sprinklers?

April 26, 2017acceptable ASTM pipe sprinklers Standards

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What ASTM pipe standards are acceptable for fire sprinklers?

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NFPA recognizes three steel pipe standards: A-795, A-53, and A-135. • I’m not familiar with all of those, please explain the differences. All three have similar requirements regarding steel type, physical test, and acceptable tolerances for production. One difference is that A-53 requires each piece of pipe to be “hydro” tested where as A- 795 and A-135 allow a Non-Destructive Electric test (eddy current) to check the weld seam integrity for any defects. Also, NFPA-13 requires the entire sprinkler system to be hydro-tested after installation and final approval is given.