|
发表于 2009-5-14 17:00
|
显示全部楼层
来自: 中国上海
船级社规范里都有规定; 如DNV rule:
All shell fittings, and the valves required by this Rule shall be
of steel, bronze or other approved ductile material. Valves of
ordinary cast iron or similar material are not acceptable. All
pipes to which this Rule refers shall be of steel or other equivalent
material to the satisfaction of the Society, see Pt.4 Ch.6
Sec.2. |
|