A. Copper pipe, or tubing is NEVER ALLOWED BY CODE IN THE US FOR NATURAL GAS DISTRIBUTION! There are various reasons for this which I'm not going to even bother getting into because they are irrelevant. Bottom line is copper is NEVER ALLOWED BY CODE IN THE US FOR NATURAL GAS DISTRIBUTIO...
Guevara Amatón, K.V.; Couceiro, P.; Coto Fuentes, H.; Calvo-Lopez, A.; Sández, N.; Moreno Casillas, H.A.; Valdés Perezgasga, F.; Alonso-Chamarro, J. Microanalyser Prototype for On-Line Monitoring of Copper(II) Ion in Mining Industrial Processes.Sensors2019,19, 3382. https:/...