| 摘要 |
<p>PURPOSE:To maintain the purity of a gas at a high purity for a long time, by coating the inner surface of a cylinder with a nickel plating or a gold plating, or forming a cylinder itself from a stainless steel, and as well by coating a valve for the cylinder with the above-mentioned plating. CONSTITUTION:The inner surface of a cylinder for storing gas or liquefied gas to be used is coated with a nickel plating or a gold plating, or the cylinder itself is formed from a stainless steel, and a valve for the cylinder and instruments, etc., if necessary, are also coated with a nickel or gold plating.</p> |
