News
-
What are the quality inspection methods for spiral welded steel pipes
The quality inspection methods for spiral welded steel pipes are as follows: 1. Visual inspection of spiral welded steel pipes Visual inspection of welded joints is a simple procedure with various methods. It is an important part of the finished product inspection of spiral welded steel pipes, ma...Read more -
What are the processing characteristics of S355JRH seamless steel pipe
First, what are the cutting operations for S355JRH seamless steel pipe? (1) Flame cutting: S355JRH seamless steel pipe can be flame cut. Its chemical composition allows it to maintain relatively stable performance under high-temperature flames. During flame cutting, attention should be paid to ad...Read more -
What are the details of the machining performance of precision steel pipes made of different materials
First, what are the core comparative dimensions and evaluation standards for precision steel pipes? To ensure the objectivity and practicality of the comparison, the evaluation standards for each dimension are clarified, focusing on the key technological processes in bushing machining: 1. Machini...Read more -
What are the surface treatment methods for stainless steel welded pipes after welding
The properties of stainless steel welded pipes are obtained through their unique alloy composition, with chromium content playing a decisive role. Chromium combines with oxygen to form an extremely thin and incredibly hard chromium oxide film, which protects the underlying stainless steel. In the...Read more -
What preparatory work is required when welding steel pipes
(1) Remove loose rust, dirt, and grease from the joints of the steel pipes to be welded. (2) When welding steel pipes using gas welding or mechanical cutting, the cross-section should be straight to ensure concentricity after welding. Burrs and attachments should be removed before welding. (3) Wh...Read more -
What are the differences between DN125 seamless steel pipe and internally coated steel pipe
First, what is DN125 seamless steel pipe? 1) Basic concept: DN125 seamless steel pipe is a type of seamless steel pipe with a specific diameter (DN125, corresponding to an outer diameter of approximately 140mm). Seamless steel pipes are made by piercing solid tube blanks or steel ingots and then ...Read more