The overall local supply is not large, or it has a certain support point for the sales market. However, with regard to the current status of the industry, trading companies have a relatively negative attitude and are widely disregarding the future. In general, if there is no significant adjustment in raw materials, the price of welded pipes in Taiyuan may continue to operate stably in a short period of time. According to the sales market, the price of hot-dip galvanized square tube futures has gradually risen after the opening of the low-end hot-dip galvanized square tube futures trading today, but the good times are not so frequent. The company is relatively negative about market trends. In addition, the overall transaction volume of the sales market today is still unsatisfactory, and the recent delivery of resources has led to an increase in the supply of the local sales market. With the short-term requirements of the sales market that cannot be repaired, the mid-to-late price may be
The shortcoming of the internal scab of the hot continuous-rolled seamless steel pipe is that there are dents similar to the size of soybean grains on the inner surface of the seamless steel pipe, and most of the scabs contain dark red or dark gray dirt. The influencing factors of internal scab are: metal oxide removal agent, gasifier processing technology, mandrel lubrication and other factors. Below is a look at how to manipulate the inner and surface defects of seamless steel pipes:
Seamless steel pipe occupies an important position in the social and economic development, and perhaps my friends are not very familiar with it, but it has been widely used in petroleum and chemical management and other aspects, which has created a very important place for people’s daily life,it's very convenient.
The shortcoming of the internal scab of the hot continuous-rolled seamless steel pipe is that there are dents similar to the size of soybean grains on the inner surface of the seamless steel pipe, and most of the scabs contain dark red or dark gray dirt. The influencing factors of internal scab are: metal oxide removal agent, gasifier processing technology, mandrel lubrication and other factors. Below is a look at how to manipulate the inner surface layer of seamless steel pipe with the seamless steel pipe manufacturer's network editor:
During the forming process, the steel plate deforms evenly, the remaining stress is small, and the skin phase is not scratched. The processed spiral steel pipe has greater flexibility in the size and specification of the diameter and wall thickness, especially in the production of high-grade steel-grade thick-walled pipes, especially the small and medium-diameter thick-walled pipes have disadvantages that cannot be compared with other processes. To meet users' more requirements in terms of spiral steel pipe specifications.
What is the difference between seamless steel pipes and seamed steel pipes？ 1. With seamed pipes, general companies can increase the maximum applicable pressure to within 20 kg, which is the most secure application management method category. It is generally used to pass water, liquefied gas, and reduce its gas and other bottom pressure liquids;
When it is necessary to process elbow products, the results will be more ideal only when the demanders can choose the right material. From the actual processing, it is clear that the selection of stainless steel materials has indeed become a very important part of the processing. I hope that when processing the pipe bending, all friends should take these contents seriously, and the result after the actual processing is completed can be in a very good state.
How to solve the problems that occur in the process of processing stainless steel flanges? best steel plate flange- GKSTEELPIPE The processing of stainless steel flanges needs to understand and pay attention to some problems: 1. Welding seam defects: the welding seam defects of stainless steel flanges are more serious. If manual mechanical grinding is used to make up for it, the grinding marks produced will cause uneven surface and affect the appearance; 2. Uneven grinding and polishing passivation: pickling passivation after manual grinding and polishing, it is difficult to achieve a uniform treatment effect for a workpiece with a large area, and an ideal uniform surface cannot be obtained. There are also its shortcomings in terms of labor costs and high cost of auxiliary materials; 3. Scratches are difficult to remove: the overall pickling passivation, chemical corrosion or electrochemical corrosion and rust will occur in the presence of corrosive media, and carbon steel
Seamless steel pipes continue to develop during the entire development trend, and the total number of manufacturers and commodities continues to increase. Due to the large number of seamless steel pipe factories and the relatively large total output in the sales market, many problems have appeared during the entire development trend, among which quality problems and many drawbacks are more typical. In addition, the overproduction of seamless steel pipes is serious, and the development trend of the intermediate field is relatively limited, and the future will also face huge challenges. In the process of the whole development trend, the following problems are mainly encountered: