News
-
How to control the defects on the inner surface of seamless tube?
The scarring defect in the hot continuous rolling seamless tube exists on the inner surface of the steel pipe, which is similar to the pit of the size of a soybean grain. Most of the scars have gray-brown or gray-black foreign matter. The influencing factors of internal scarring include: deoxidiz...Read more -
Warehousing inspection and loading and unloading of anti-corrosion spiral steel pipes
Everyone knows that when we transport all kinds of things, we need to check carefully, especially large-scale materials, which need to be checked two or three times before entering or leaving the warehouse. So how should the anti-corrosion spiral steel pipe be checked when entering and leaving th...Read more -
Causes and measures of uneven wall thickness of seamless tubes
The uneven wall thickness of the seamless tube(SMLS) is mainly manifested in the phenomenon of uneven wall thickness of the spiral shape, uneven wall thickness of the straight line, and thicker and thinner walls at the head and tail. The influence of continuous rolling process adjustment of seaml...Read more -
How to enhance the stability of spiral steel pipe?
Spiral welded pipe (ssaw) is a kind of steel pipe that combines low-carbon and environmentally friendly alloy structural steel and low-alloy structural characteristics into pipe material and electric welding. How can the reliability of the spiral pipe be improved in the process of adoption? When ...Read more -
Flattening test of seamless steel pipe
The production process of seamless steel pipes is relatively cumbersome and rigorous. After the seamless steel pipe is produced, certain tests must be carried out. Do you know the flattening test method and steps of the seamless steel pipe? 1) Flatten the sample: 1. The sample is cut from any par...Read more -
Weld leveling of straight seam steel pipe
Weld leveling of straight seam steel pipe (lsaw/erw): Due to the impact of the welding current and the influence of gravity, the internal weld of the pipe will protrude, and the external weld will also sag. If these problems are used in an ordinary low-pressure fluid environment, they will not be...Read more