Knowledge

02Jul, 2024

The shortcomings that are prone to hot -rolled steel pipes -the shape is not ...
Dead characteristics: The cross section of the steel pipe is not round. Cause: Improper adjustment of clamping force when sawing, incorrect installation of the finished rack and wo
02Jul, 2024

The shortcomings that are prone to hot -rolled steel pipes -straight roads
Defective characteristics: grooves that are vertically distributed along the steel pipe. Cause: When the rolling temperature is low, the top sticky metal scratch the inner surface
02Jul, 2024

The flaws that are prone to hot -rolled steel pipes -indentation
Dead characteristics: Show irregular or regular local indentation and meat on the longitudinal surface of the steel pipe. The shapes are nuclear, strip, horizontal pressure injurie
01Jul, 2024

Several anti -corrosion processes in spiral steel pipes
In people's daily life, the anticorrosive spiral steel pipe plays an important and different role. The anticorrosive spiral steel pipe generally refers to the use of special te
01Jul, 2024

Welding method of welding steel pipe
The commonly used welding steel pipes are divided into the following three types of welding processes used during production. ① Continuous furnace welding (forging welding) steel p
01Jul, 2024

The way of welding steel pipes
Method of the steel brand number for welding: Welding steel includes carbon steel, welded alloy steel, and stainless steel for welded steel. The method of the brand is to add a sym
01Jul, 2024

Improvement measures for color differences in hot -dip galvanized steel pipes
1. According to the material, select the appropriate galvanized temperature; 2. Adjust the ingredients of zinc liquid to control the content of aluminum and nickel in the appropria
01Jul, 2024

The cause of color difference in hot -dip galvanized steel pipes
It is mainly due to the severe reaction of iron and zinc. The fierce response of the Fe-Zn makes the original coating that was originally composed of the alloy layer and the pure z
30Jun, 2024

Dalvation -galvanized round tube heat treatment line high -pressure water rem...
During the heat processing process of steel, the surface of the steel parts will generate varying degrees of oxidation with the height of the heating temperature and the length of
30Jun, 2024

Dalvation -galvanized round tube heating furnace heating oxidation defect and...
Oxidation refers to the role of CO2, H2O, and O2 in the furnace gas during heating. That is, burning), reduce the material rate, and at the same time, the accumulation of iron oxid
30Jun, 2024

Hardness detection method of seamless steel pipes
Seamless steel pipes should conduct mechanical performance testing. Seamless steel pipes are widely used in manufacturing structures and mechanical parts, such as petroleum drillin
30Jun, 2024

How to extend the life of seamless square tubes
Seamless square pipes are part of the lack of engineering buildings. Therefore, the quality of seamless square tube quality will immediately affect the development trend of the con

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