Monthly Archives: July 2021

A customer needs hot rolled steel pipe this week, but only cold rolled steel pipe due to the special wall thickness.Today let’s learn about the difference between hot rolled steel pipe and cold drawn ...

The elbow is made of cast iron, stainless steel, alloy steel, malleable iron, carbon steel, non-ferrous metal and plastic. Elbow connection methods are: direct welding (the most commonly used way) fla...

The porosity of welding seam will not only affect the compactness of welding seam, cause pipeline leakage, but also become the inducing point of pipeline corrosion, and will reduce the strength and to...

What is gasket  ? Cangzhou wilson pipeline  sales@wilsonpipeline.com The contact surface where the gasket is inserted between the flanges and pressed to achieve the sealing effect is called the fla...

The fracture inspection is one of the methods to check the quality of steel pipeline products.Cangzhou wilson pipeline  sales@wilsonpipeline.com There are mainly the following fracture types: ducti...

Post weld heat treatment (PWHT) process refers to a welding heat treatment process in which the welds are heated to a certain temperature and held for a certain period of time after the completion of ...

Next, let’s learn about the quality problems and solutions of forgings in quenching and cooling:Cangzhou wilson pipeline  sales@wilsonpipeline.com Insufficient hardness and enough hardening depth: ...

In last article,we learned about what is PMI（Positive Material Identification）mean.What is the application industry for the PMI and why? Actually we could find many industries in which the PMI is u...