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Procurement and processing methods of straight seam steel pipes
First, procurement methods of straight seam steel pipes: Procurement is a relatively lucrative industry, but it is quite difficult to do. They also bear a lot of hardships. Many things have never been seen before in the project, and they also need to be studied and researched. Here are a few poin...Read more -
Methods for checking the quality of large-diameter thin-walled steel pipes
1. Generally, large-diameter thin-walled steel pipes are used for the transportation of generally low-pressure fluids such as water, gas, air, oil, and heating steam. 2. Ordinary carbon steel wire casing (GB3640-88) is a steel pipe used to protect wires in electrical installation projects such as...Read more -
Defects that are easy to occur in the welding area of spiral steel pipes
Defects that are easy to occur in the welding area of spiral steel pipes include pores, thermal cracks, and undercuts. The pores in the weld of spiral steel pipes not only affect the compactness of the pipeline welds and cause pipeline leakage but also become the inducing point of corrosion, se...Read more -
Detailed explanation of the surface treatment and processing methods of thick-walled steel pipes
Thick-walled steel pipes have a wide variety of steel types and specifications, and their performance requirements are also various. All of these should be differentiated as user requirements or working conditions change. Usually, steel pipe products are classified according to cross-sectional sh...Read more -
Advantages of straight seam steel pipe and steel structure application
Straight seam steel pipe is a kind of steel pipe welding process opposite to spiral steel pipe. The welding process of this kind of steel pipe is relatively simple, and the welding cost is relatively low, it can achieve high efficiency during production, so it is relatively common in the market. ...Read more -
Stages and standard parameters of the mechanical expansion process of large-diameter steel pipes
First, the stages of the mechanical expansion process of large-diameter steel pipes: The steel plate is first pressed into a U shape in the forming die, then pressed into an O shape, and then internal and external submerged arc welding is performed. After welding, the diameter is usually expanded...Read more -
Selection requirements and acceptance steps for submerged arc steel pipes
First, the selection requirements for submerged arc steel pipes: 1. For pipelines with high peak-shaving requirements, due to the uneven gas consumption of users, the pipeline pressure fluctuates frequently, and the steel pipes are subjected to large alternating stresses. Existing defects in the ...Read more -
Basic requirements for the appearance of straight seam steel pipe welds and production temperature
Basic requirements for the appearance of straight seam steel pipe welds Before non-destructive testing of straight seam steel pipes, the appearance inspection of welds should meet the requirements. The appearance of the welds of straight seam steel pipes and the general welding appearance of the ...Read more -
Introduction to pre-welding and welding essentials of straight seam steel pipes
First, pre-welding of straight seam steel pipes: pre-welding includes joints and welds. 1. The joint (also known as the forming seam) has no misalignment or the misalignment is less than the specified value. Generally, the misalignment is ≤8% of the plate thickness, and the maximum is no more tha...Read more -
The industrial forging flange production process
The forging process generally consists of the following steps, namely, selecting high-quality steel billets for blanking, heating, forming, and cooling after forging. The forging process methods include free forging, die forging, and membrane forging. During production, different forging methods ...Read more -
How to detect the corrosion performance of flanges
The use of flanges in industrial structural parts is mainly to improve the connection function and keep the pipeline sealed without leakage. However, many flanges will corrode and age after a period of use, thus losing the sealing effect, so it is very necessary to perform anti-corrosion tests on...Read more -
Several common anti-corrosion processes for industrial spiral steel pipes
Anti-corrosion spiral steel pipes play an important and different role in people’s daily lives. Anti-corrosion spiral steel pipes generally refer to the use of special technology to treat ordinary spiral steel pipes that have been treated with anti-corrosion, so that the spiral steel pipes ...Read more
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