1
Jul.
31, 2025
How to choose the high quality steel pipe hydro testing machine?
Discover crucial tips for choosing a top-tier steel pipe hydro testing machine in our comprehensive guide. We explore essential features, performance metrics, and industry standards to equip you with the knowledge needed for informed decisions. Elevate your operations with the ideal equipment for accurate hydro testing. Dive into expert insights for a smarter selection!
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2
Jul.
31, 2025
Electrolytic Phosphating Process
Electrolytic Phosphating (Electrolytic Phosphating) is the process of forming a phosphate film on a metal surface by electrochemical methods, which is more complicated than chemical phosphating, but the film formation speed is faster and the film layer is more uniform. The following is a typical electrolytic phosphating process and key control parameters:
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3
Jul.
31, 2025
Application: Pre-painting treatment for automobiles, home appliances, hardware, etc.
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4
Jul.
31, 2025
Electrolytic phosphating potions are similar to chemical phosphating but need to be optimised for conductivity and current efficiency.
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5
Jul.
31, 2025
25 Years of Excellence in High-Pressure Waterjet Technology"
As we step into the year 2025, Win Win Waterjet Company is proud to celebrate its 25th anniversary, marking a significant milestone in our journey of excellence and innovation in the field of high-pressure waterjet technology. Over the past quarter of a century, we have continually strived to push the boundaries of what is possible, delivering cutting-edge solutions to our global customer base.
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6
Jul.
31, 2025
Selection of Phosphating Processes
Phosphating type Main potion composition Applicable scene
Zinc phosphating Zn(H₂PO₄)₂, NO₃-, Ni²⁺, F- Pre-painting treatment (automotive, home appliances)
Manganese phosphating Mn(H₂PO₄)₂, Mn(NO₃)₂ Wear-resistant parts (bearings, gears)
Iron phosphating NaH₂PO₄, NaClO₃ Low-cost rust prevention (appliance housings)
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7
Jul.
31, 2025
Phosphating Process Auxiliary Treatment Potion
Phosphating Process Auxiliary Treatment Potion
(1) Degreasing agent
Alkaline degreasing: NaOH, Na₂CO₃, Na₃PO₄ + surfactant
Neutral degreasing: non-ionic surfactant (environmentally friendly)
(2) Acid wash solution
Hydrochloric acid (HCl) or sulphuric acid (H₂SO₄) (5%~20% concentration)
Corrosion inhibitor (e.g. hexamethylenetetramine) to prevent overcorrosion
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8
Jul.
31, 2025
High frequency straight seam welded pipe machine is an equipment used for producing welded straight seam pipes, widely used in various industries. Below, we will introduce several industries and explain the application requirements of high-frequency straight seam welded pipe machines in these industries.
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13
Jul.
31, 2025