Need to be anti-rust paints on the welded joints when paint on welded pipes have welded joints?

Need to be anti-rust paints on the welded joints when paint on welded pipes have welded joints?

When painting zinc pipes with the welded joints, there are 2 ways to treat:

  • Method 1. It is possible to paint anti-rust primer on the welded joints after they are cleaned. Then use galvanized sơn sắt mạ kẽm paint to paint as usual.
  • Method 2. Without any primer, the worker just clean the surface and then coated with galvanized iron. The welded joint is painted 1-2 times thicker than the surface to ensure quality.

 

Note: Do not paint primer against galvanized iron surface.

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