| 摘要 |
<p>Combustible gas fro heating, melting, welding and cutting metals comprises (a) 11-84 (39-74) mole% propylene and/or (cyclo) propane (b) 1-74 (1-36) mole% methyl acetylene and/or propadiene; and (c) 15-88 (25-60) mole% 4C alkanes or alkenes. Blend is a non-explosive acetylene substitute.</p> |
