Email:jessy@jshengda.comWuxi Hengda Liquid-Purification Chemical Plant

Wuxi Hengda Liquid-Purification Chemical Plant

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Add:Nanyuan,Donggang Town,Xishan District,Wuxi City,Jiangsu,China

Tel:+86-510-88791885

Fax:+86-510-88797957

Contact Person: JessyZhou

Phone:+8613372272718

Email:jessy@jshengda.com


Common Defects In Stainless Steel Pipe Pickling Passivation Solution Socking And Its Causes

The common defects of stainless steel pipe pickling and passivation socking solutions:

1.Check the cleanliness, ph value test paper appears red.

2.The heat affected area of the weld still shows red and black.

3.The pipe or flange appears to fall off or peel.

4.Supervisor or nozzle has bump, scratch marks.

5.The outer surface of the pipe is not uniform and has irregular patterns.

6.Pipe internal adhesive tape or other impurities.

7.The outer wall of the pipe has pits.

8.Blue dot test appears blue dot.

The cause of the defect:

1.Pickling passivation rinse is not clean, there is a small amount of acid present, resulting in PH paper showing red.

2.Heat affected area soaking time is short, resulting in the scale is not clean.

3.The material itself is defective,after pickling appear fall off or peeling phenomenon.

4.Not check carefully during the construction of last process,so that the problem left to pickling workshop.

5.Rinsing is not clean after pickling, there is a part of the acid residue left in the pipe section, after rinsing the passivated surface will appear scratches.

6.The tape and other debris will stick to the pipe wall after heating,It was omitted from the pickling workshop staff during the preliminary inspection process.

7.In the process of transporting pipe,there are bumps, scratches and other issues because no have adequate protection measures.

8.In the pickling passivation process, the passivation film is not formed or destroyed

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Wuxi Hengda Liquid-Purification Chemical plant is specialized in manifacturing stainless steel pickling and passivation paste & solutions,anti spatter agent and nozzle tip dip gel etc welding chemicals.

If you are interested in pickling and passivation solutions,please contact us.

Contact Information:

Wuxi Hengda Liquid-Purification Chemical Plant 

Add:Nanyuan,Donggang Town,Xishan District,Wuxi City,Jiangsu,China

Tel:+86-510-88791885

Fax:+86-510-88797957

Contact Person: JessyZhou

Phone:+8613372272718

Email:jessy@jshengda.com

Web:www.hdpicklingpassivation.com 






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