The most comprehensive application guide for large diameter stainless steel pipes
Contents
Welding methods for large-diameter stainless steel pipes
Welding parameters for large-diameter stainless steel pipes
Application scenarios for large-diameter stainless steel pipes
Specifications for large-diameter stainless steel pipes
Connection methods for large-diameter stainless steel pipes
Material for large-diameter stainless steel pipes
Large-diameter stainless steel pipes are widely used in petroleum, chemical, papermaking, fertilizer, medicine, food, bioengineering and other industries.
Their quality and reliability are crucial to the safety of production and use. In the manufacture and installation of stainless steel pipes, how to ensure the welding quality of the pipes becomes a key issue.
This article systematically summarizes the welding process standards for large-diameter stainless steel pipes, aiming to improve the welding quality and reliability of large-diameter stainless steel pipes.
Welding methods for large-diameter stainless steel pipes
Manual welding:
Applicable to stainless steel pipes with smaller diameter and thinner wall thickness. It has high requirements for pipes and requires experienced operators to perform welding.
Automatic welding:
Applicable to stainless steel pipes with larger diameter and thicker wall thickness. It is also suitable for mass production, with good welding quality and high production efficiency.
Welding parameters for large-diameter stainless steel pipes
Welding current:
The size of welding current depends on the wall thickness and diameter of the pipe. On the premise of ensuring sufficient penetration depth, the smaller the welding current, the smaller the thermal effect, but the welding speed will be slower and the production efficiency will decrease.
Welding speed:
The size of welding speed depends on the wall thickness and diameter of the pipe. On the premise of ensuring welding quality, the faster the welding speed, the higher the production efficiency, but the welding defect rate will also increase accordingly.
Gas flow rate:
The size of gas flow rate depends on the wall thickness and diameter of the pipe. The smaller the gas flow rate, the better the protection effect, but if the gas flow rate is too small, it will affect the speed of weld formation, thereby affecting production efficiency.
Application scenarios for large-diameter stainless steel pipes
Large diameter stainless steel pipes are widely used in petroleum, chemical, pharmaceutical, food, papermaking, nuclear power and other industries, mainly for conveying high temperature, high pressure, corrosive and easy to scale media.
Specifications for large-diameter stainless steel pipes
Large diameter stainless steel pipe refers to stainless steel pipe with an outer diameter exceeding 159mm.
Outer diameter:
Generally, the outer diameter of large diameter stainless steel pipe is 219mm, 273mm, 325mm, 377mm, 426mm, 478mm, 529mm, 630mm, etc. Other specifications can also be customized as needed.
Wall thickness:
The wall thickness of large diameter stainless steel pipe is usually between 5-30mm, depending on the specific conditions such as the use environment and fluid medium.
Length:
The length of large diameter stainless steel pipe is generally 6-12 meters, and the length can also be customized as needed.
Connection methods for large-diameter stainless steel pipes
Butt welding connection
Butt welding connection is to grind and clean the ends of two large-diameter stainless steel pipes, then weld them end to end, and connect the two pipes together by melting the welding rod at high temperature.
Flange connection
Flange connection is to connect the flanges at both ends with bolts and washers to form a pipeline connection.
Material for large-diameter stainless steel pipes
Large diameter stainless steel pipes are usually made of 316L, 304, 321, 347 and other stainless steel materials, which have excellent corrosion resistance, high temperature resistance, high strength and other advantages.
Summary
The specifications and materials of large-diameter stainless steel pipes vary depending on the application environment. To choose suitable stainless steel pipes, you need to make choices based on specific circumstances and actual needs.
If you are interested in our large diameter stainless steel pipes, you can contact us at any time to get product catalog and price.