ASTM B837-19,Standard Specification for Seamless Copper Tube for Natural Gas and Liquified Petroleum (LP) Gas Fuel Distribution Systems.
ASTM B837-19 establishes the requirements for Type GAS seamless Copper UNS No. C12200 tube for use in above ground natural gas and liquified petroleum (LP) gas fuel distribution systems, commonly assembled with flared fittings or brazed joints.
Materials and Manufacture
The material of manufacture shall be a tube of Copper UNS No. C12200 of such purity and soundness as to be suitable for processing into the products prescribed herein. The finished tube shall have the properties and characteristics prescribed in this specification and shall be cold drawn to size.
Significance of Numerical Limits
For purpose of determining compliance with the specified limits for requirements of the properties listed in Table 5,an observed value or calculated value shall be rounded as indicated in accordance with the rounding method of Practice.
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