-
Nondestructive testing of pipe fittings and flanges
Relevant provisions in the national standard for pipe fittings “GB/T13401-2017 Technical Specifications for Steel Butt-welded Pipe Fittings”: First, nondestructive testing 1. Tees, crosses, pressed reducers and pipe caps formed by direct cutting of bars of all material categories shal...Read more -
The difference between 304, 316L, and duplex stainless steel pipe fittings
Duplex stainless steel pipe fittings have the performance characteristics of both 304 and austenitic stainless steel pipe fittings. This article compares duplex stainless steel pipe fittings with stainless steel pipe fittings made of 304 and 316L as the main materials, and draws the following dif...Read more -
What are the functions of the structural components of 3PE anti-corrosion steel pipe
3PE anti-corrosion steel pipe is a relatively advanced anti-corrosion technology in recent years. Its full name is fused epoxy/extruded polyethylene structural protective layer. The structure of 3PE anti-corrosion steel pipe consists of the following three layers: the bottom layer is fused epoxy;...Read more -
What are the methods for surface treatment of the industrial steel pipes
Long-term exposure of steel and other metal materials to the atmosphere will inevitably lead to corrosion, forming loose rust, which will cause serious losses to modern industry. At present, pipelines play an important role in various industries, so the surface treatment of steel pipes is also on...Read more -
Classification, anti-corrosion, and heat treatment technology of oil casing
First, classification and anti-corrosion of oil casing Oil casing can be roughly divided into 1. Surface casing according to different usage methods. 2. Intermediate casing. 3. Production casing. 4. Drilling casing. Surface casing is mainly: through the casing head installed on the top, to hang a...Read more -
What should be paid attention to when welding the industrial galvanized steel pipes
First, the welding of galvanized steel pipes should pay attention to: 1. Galvanized steel pipes with a diameter greater than 100mm should be connected with flanges or special ferrule-type pipe fittings. 2. To ensure the quality of welding, the galvanizing of the weld should be treated at the weld...Read more -
Analysis of the development of anti-corrosion painting of straight seam steel pipes
The performance and functions of the original color straight seam steel pipes in the specific use process fully demonstrate the operational contribution and the use performance. After painting, and spraying white characters, the straight seam steel pipes also look very energetic and beautiful. Th...Read more -
How to operate when stacking thick-walled steel pipes
1. Angle steel and channel steel should be stacked in the open air, that is, the mouth should be facing down, I-beams should be placed upright, and the I-groove surface of the steel should not face up to avoid water accumulation and rust. 2. Corresponding passages should be left between stacks. T...Read more -
A brief analysis of the storage site and deoxidizer issues of straight seam steel pipes
Straight seam steel pipes can be divided into many different specifications and names, including straight seam welded pipes, double-sided submerged arc welded pipes, thick-walled straight seam steel pipes, straight seam steel pipes, large-diameter straight seam steel pipes, API5L straight seam st...Read more -
The quality classification of large-diameter straight seam welded steel pipes
The application of large-diameter straight seam welded steel pipes is very common in people’s lives. Do you know what grades the quality of large-diameter straight seam welded steel pipes can be divided into? The following is an introduction to the specific content. The surface of the gener...Read more -
The role of heat treatment of stainless steel pipe fittings
After stainless steel pipe fittings are processed by forming, welding, and other processes, the metal molecular structure, magnetism, and physical properties have changed. The atmosphere protection solid solution process can restore the corrosion resistance affected after processing, and at the s...Read more -
Daily maintenance and production process of thick-walled straight seam steel pipe
The advantage of thick-walled straight seam steel pipe is that the online heat treatment process of the weld eliminates welding stress, refines the metallographic grains of the heat-affected zone, and improves the physical and mechanical properties. Western developed countries attach importance t...Read more