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Requirements for design of maintenance layer for galvanized

Author:admin  |  Time:2017-07-21  |  Click:

In the previous section, we have learned the specific design requirements of galvanized iron wire equipment insulation layer, and then we will take a look at the galvanized iron wire equipment maintenance layer of the specific design requirements:
Galvanized iron wire equipment maintenance layer design request:
1. Insulation layer shall be provided with maintenance layer. Maintenance layer construction should be tight and strong, in the environment changes and vibration conditions, no water seepage, no crack, no sewing, not falling.
2, maintenance layer should use metal data as maintenance layer. Corrosion resistant material should be used as maintenance layer in corrosive environment.
3, metal maintenance layer thickness should be consistent with the rules of table 5.4.3:
4, metal maintenance seam type, according to the detailed conditions, select the lap, plug or bite type, and conform to the following rules:
A, hard insulation products, metal maintenance layer longitudinal seam, without damaging the inside products and moisture-proof layer can be stopped under the premise of bite. The longitudinal seam of the metal maintenance layer of semi hard and soft insulation products can be inserted or lapped. The joint can be connected by self tapping screw or core pulling rivet, and the joint should be connected with core pulling rivets. The distance between the nail and the nail is 200mm.
B, metal maintenance layer of the ring seam, can be used to lap or plug, stacking width of 30 ~ 50mm. Except for the maintenance layer of the vertical device with the anti falling request, the level pipeline shall not be fixed with self tapping screws or core rivets in the lap joint or the inserted ring seam of the maintenance layer.
The joint of metal maintenance layer of C and cold preservation structure shall be made of bite or banding structure, and shall not be connected by screws or rivets.
D, metal maintenance layer should be integrated against (rain) water function. The water into the insulation parts of the application to "the king Emperor Yan fat or clay seam.
For more questions about galvanized iron wire equipment, please pay attention to the update of galvanized wire equipment official website technical document.

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