• Improper welding of X80 pipeline may cause cracks
• Brief introduction of API X52 pipeline steel
• The difference between PSL1 and PSL2
• Harm of inclusions in X70 pipeline steel
• API 5L pipeline pipe
• X52 steel plate surface quality standards that need to be met
• The basic production process of API 5L X60 pipeline steel
• The key to Q460D steel welding process
• What does the heat treatment of Q690 Steel include?
• Reasons for choosing Q690D steel

Performance characteristics of DNV GL grade B marine steel plate shop primer - 2

This article continues the last article “Performance characteristics of DNV GL grade B marine steel plate shop primer - 1”.

3. The workshop primer of DNV GL grade B marine steel plate has thin film thickness, which can be sprayed by high pressure airless spraying and get even film. The film thickness of shop primer shall be strictly controlled, and the thickness of shop primer with or without zinc shall be 15-20um and 15-25um respectively; the film thickness of shop primer will not be included in the total film thickness of hull coating.

4. The shop primer of DNV GL grade B marine steel plate can be removed or retained during the formal coating by sections, which mainly depends on the integrity of the shop primer layer itself and the specific requirements of the first coating on the surface treatment, and can be matched with the coating to be coated.

5. Shop primer shall not affect the welding performance of DNV GL grade B marine steel plate and welding strength.

6. When cutting or welding DNV GL grade B marine steel plate, the smoke and dust produced by the paint film are harmless to human body, and the concentration of toxic and harmful substances released is within the range allowed by the national health indicators. Therefore, the shop primer should not contain arsenic, antimony, lead, chromium, cadmium pigments.

7. The paint film of DNV GL grade B marine steel plate has good mechanical properties and can withstand the friction and collision during handling, including bending during processing, and has good interlayer adhesion with various coatings to be coated.