News
Why Pipe Burst After Welding? Hidden Cracks, Hydro Test Failure & How Modern Metal Pipe Making Machines Prevent It
Pipe burst after welding? Learn why hydro test failures, flattening cracks, and hidden weld defects happen—and how a modern Metal Pipe Making Machine improves weld quality.
Why ERW Tube Mills Fail: The Real Reason Behind Open Weld Seams
How to Improve Welding Efficiency in ERW Tube Mills
Why Your Tube Mill Keeps Having Weld Problems — And How to Fix It
We Thought It Was a Welding Problem — But It Wasn't
Zinc Spray vs Galvanizing: Which Works Better for Corrosion Protection?
How to Repair Weld Seam Corrosion in ERW Tube Mills (Without Re-Galvanizing)
If you’ve been running an ERW tube mill for a while, this probably sounds familiar.
The pipes come out looking clean. Surface looks good. Everything seems fine—until you take a closer look at the weld seam.
That’s usually where the trouble begins.
No matter how good the galvanized strip is, the welding process itself changes things. The zinc layer at the seam doesn’t stay intact. And once that protection is gone, the risk of rust goes up quickly.
Left untreated, it’s only a matter of time before corrosion shows up—and spreads.
In this article, we’ll go through what’s really happening at the weld seam, why some common solutions don’t work as well as expected, and a more practical way many factories are now using to deal with it.
Tube Mill for Chair and Table Tubes: How It Really Works in Production
What Are the Three Major Methods of Steel Pipe Manufacturing?
Debunking the myth of “ All Round Machine”
This article is aimed to discuss and solve a misunderstanding in tube mill procurement — the excessive pursuit of All Round Machine. Through analyzing a customer case, we will reveal a hidden cost trap behind “ a big machine for small pipes ” and provide investors with a scientific, economical equipment and production planing strategy , realizing return on investment to the greatest extent.