Selection of Seamless Steel Pipe Welding Method
The welding method of seamless steel tube should be selected according to the material and wall thickness of the seamless tube. Because different welding methods have different arc heat and arc force,...
Treatment of Excessively Wide Heat-affected Zone of Small Diameter Thick-walled Pipe Weld
In the process of high-frequency welding, especially in the production of thick-walled small pipe diameter products, such as small pipes of 1 inch and below, the wall thickness is relatively thick, us...
The Basic Principle of High Frequency Welding
What is high frequency welding?
High-frequency welding is a new type of welding process that uses the skin effect and neighboring effect produced by high-frequency current to connect steel p...
API 5L Line Pipe
The API 5L line pipe is a line pipe that belongs to the American petroleum standard. API SPEC 5L-2011 (line pipe specification) is compiled and issued by the American Petroleum Institute, and is commo...
Seamless Black Pipe, Black Steel Pipe – PermanentSteel.com
Seamless Black Pipe, Black Steel Pipe Schedule 40 Seamless, Black Steel Pipe Schedule 80 Exporter
What are black steel pipes?
Black steel pipe is made up of steel that has not being galv...
Phenomena, Causes and Treatment Methods of Boiler Tube Damage
a) The following phenomena occur when the boiler tube is damaged
1. The water level of the boiler drops rapidly, the steam pressure and the feed water pressure decrease, and there is a noticeable noi...
