Okla. Admin. Code § 380:25-5-8 – Cast iron headers and mud drums | Midpage
§ 380:25-5-8
Okla. Admin. Code § 380:25-5-8
Cast iron headers and mud drums
Department of Labor
The maximum allowable working pressure on a water tube boiler, the tubes of which are secured to cast iron or malleable iron headers, or which have cast iron mud drums, shall not exceed 160 psig.