国产国产午夜福利视_好吊妞在线_欧美国产一二区_a在线亚洲男人的天堂在线_久久人做人爽一区二区三区小说_免费看av在线

The outer surface of the valve should be painted out of the factory, the paint layer should be durable, beautiful rules, and ensure that the mark is clear.

1, valve products according to the body material to identify the paint, the color according to the table

Note: acid resistant steel and stainless steel are not allowed to be painted, and copper alloy is not allowed to be painted.

2. In order to indicate the material of sealing surface of valve products, identification and painting shall be carried out on the driving hand wheel, handle and spanner, and the color shall be specified in the table below.

Note :(1) the sealing surface materials of the valve seat and the opening and closing parts are different. Color according to the low hardness material.
          (2) Check valve, painted on top of the bonnet: safety valve, pressure reducing valve, trap painted on the hood or bonnet.

3. The paint color of transmission mechanism shall be as follows:
(1) Electric device: ordinary type paint medium gray, three in one (outdoor, explosion-proof, anticorrosive) paint end blue.
(2) Pneumatic, hydraulic, gear transmission and other transmission mechanism, the same product coloring.

4. The paint color can be changed according to the customer's order requirements.