Subchapter 7. General Industry Safety Orders
Group 10. Gas Systems for Welding and Cutting
Article 85. Service Piping for All Gases
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§4821. Gas Systems Piping for Welding and Cutting, Materials and Design.
§4822. Oxygen Piping.
§4823. Acetylene Piping.
§4824. Piping Joints.
§4825. Installation--General.
§4826. Testing.
§4827. Painting and Signs.
§4828. Hydraulic Back-Pressure Valves.
§4829. Storage and Use of Cylinders. (Repealed)
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