| 摘要 |
<p>1517640 Welding flux LA SOUDURE ELECTRIQUE AUTOGENE PROCEDES ARCOS S A 14 Sept 1976 [18 Dec 1975] 38073/76 Heading C7M A flux for submerged arc welding steels contains in weight per cent; Up to 5 wt. per cent of CaCO 3 , CaF 2 and ionizer such as potassium titanate may be added.</p> |
