Mich. Admin. Code R. 408.11241 - Piping material
Rule 1241.
(1)
Piping for acetylene shall be limited to steel and ductile iron.
(2) Piping for other gases shall be
compatible with the gas.
(3) Oxygen
at pressures of more than 700 psig shall be run in stainless steel or copper
alloy piping.
(4) Gray or white
cast iron fittings shall not be used.
(5) Pipe and fittings shall be as prescribed
in section 2 of the ANSI B31.1 "Industrial Gas and Air Piping Systems," 1967
edition, as adopted in
R
408.11202, except for the following:
(a) Pipe shall be not less than schedule 40
and fittings not less than standard weight in sizes up to and including 6-inch
nominal.
(b) Copper tubing shall be
type K or L.
(6) A hose
connection and hose complying with
R
408.11233 may be used to connect the outlet of a
manifold pressure regulator to piping if the working pressure of the piping is
250 p.s.i.g. or less, and the length of the hose does not exceed 5
feet.
Notes
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