Industry News
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What are the common welding defects in welded steel pipe welds
First, how are the welds of these welded steel pipes formed? Common defects in welds include pores, slag inclusions, incomplete penetration, incomplete fusion, and cracks. 1. Porosity is a cavity formed by absorbing excess gas or gas generated by a metallurgical reaction when ...Read more -
Four measuring methods for spiral steel pipe length
How to accurately measure the length of spiral steel pipe is very important for spiral steel pipe manufacturers. After years of production experience, four methods for testing length have been summarized: 1. Improved encoder length measurement This method is an indirect measur...Read more -
What are the common categories of stainless steel pipes on the market
1. Production method: Stainless steel welded pipes are divided into two categories: seamless pipes and welded pipes according to the production method. Seamless steel pipes can be divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, and extruded pipes. Cold-draw...Read more -
Specific uses of precision seamless steel pipes
Precision seamless pipe, many people in the construction industry should know that it is a high-precision steel pipe material, mainly used to produce pneumatic or hydraulic components, such as cylinders or cylinders, with strong pressure resistance and light weight, and is gen...Read more -
Introduction to the quality technology and special uses of large-diameter flanges
Large-diameter flange is a kind of flange. It is widely used and promoted in the machinery industry and has been well-received and favored by users. Large-diameter flanges have a wide range of uses, and the range of use is determined according to different characteristics. The...Read more -
The production process and inspection standards of thick-walled straight seam steel pipes
Thick-walled straight-seam steel pipes are made by rolling long strips of steel strips into round tubes through high-frequency welding units and welding straight seams. The shape of the steel pipe can be round, square, or special-shaped, which depends on the sizing and rolling...Read more -
The difference between seamless steel pipe, thermal tension reduced steel pipe, and straight seam steel pipe
At present, the competition in the seamless steel pipe market is becoming increasingly fierce. Due to the limitations of its production process, the production cost of seamless steel pipes has always been high, resulting in a gradual decline in its economic benefits. With the ...Read more -
Stainless steel and heat-resistant steel heat treatment operations
Cleaning: 1. The workpieces and fixtures should be cleaned of oil, residual salt, paint, and other foreign matter before heat treatment. 2. The fixture used for the first time in the vacuum furnace should be degassed and purified in advance at a vacuum level not lower than tha...Read more -
Duplex stainless steel pipe cold working process
1. The yield strength of duplex stainless steel is twice as high as that of austenitic stainless steel. The deformation amount should be smaller than that of the latter. Appropriate speed and feed rate must be selected during cold rolling to minimize uneven longitudinal wall t...Read more