The United States of America Standards Institute Codes listed below are established as the piping codes for the state:
- (1) B 31.1.0 — 1967 power piping;
- (2) B 31.2 — 1968 fuel gas piping;
- (3) B 31.8 — 1968 gas transmission and distribution piping system;
- (4) B 31.3 — 1966 petroleum refining piping;
- (5) B 31.4 — 1966 and B 31.4a — 1968 liquid petroleum transportation piping systems.