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How to identify the pros and cons of threaded stainless steel pipe fittings?

Time : 2022-09-20 Visited :  123 次

Wenzhou Longwan Junkai Valve Factory is located in Longwan, the valve capital of China. Is a professional manufacturer of stainless steel valves. The main products are: stainless steel ball valve, stainless steel Y-strainer, stainless steel flange, stainless steel mirror, stainless steel gate valve, stainless steel globe valve, stainless steel check valve, etc. The company has complete equipment, advanced technology and quality, scientific management, complete testing means, and has established a perfect quality assurance system. Equipped with advanced testing equipment such as physical and chemical analysis, mechanical properties, water, air pressure, flaw detection, etc., each process from raw materials to finished products is inspected by special personnel, forming a complete inspection process.
How to identify the pros and cons of threaded stainless steel pipe fittings, Junkai gives the following answers:
1. Easy to fold
Inferior threaded stainless steel pipe fittings are prone to folds, that is, various fold lines are formed on the surface of the stainless steel. This defect often runs through the longitudinal direction of the entire product. The reason for the folds may be that the counterfeit manufacturers pursue high efficiency and the reduction is too large, resulting in the formation of Ears, folds are formed during the next rolling, and the folded product will crack after being bent. The strength of stainless steel pipes will decrease significantly. The surface of the fake and inferior stainless steel pipe fittings will have a pockmarked surface. The pockmarked surface is the irregular and uneven defect on the surface of the stainless steel pipe caused by the serious wear of the rolling groove.
2. The surface is easy to be scarred
The surface of the inferior threaded stainless steel pipe is easy to be scarred. The reason may be that the material of the inferior stainless steel welded pipe is uneven and there are many impurities. It may also be that the guide sanitation equipment of the fake and inferior stainless steel pipe manufacturer is simple and easy to stick to the steel. These magazines are easy to form knots after biting into the roll. scar.
3. Easy to form cracks
The surface of the inferior threaded stainless steel pipe is easy to form cracks, because the blank is adobe, and the adobe has a lot of pores. The adobe is subjected to thermal stress during the cooling process to form cracks, and there will be cracks after rolling.
4. Matte surface
The surface of the inferior threaded stainless steel pipe has no metallic luster, and it will show a light red or a color similar to pig iron. The reason may be that the billet is adobe, or the rolling temperature of the inferior pipe is not standard. The steel temperature is measured visually. If the rolling cannot be done according to the specified austenite area, the performance of the stainless steel pipe will naturally fail to meet the standard.
5. Easy to be scratched
The production equipment of inferior threaded stainless steel pipe manufacturers is simple, and it is easy to form burrs, which will cause scratches on the surface of the steel, and deep scratches will also weaken the strength of the stainless steel pipe.
6. Thin and low transverse tendons
Inferior threaded stainless steel pipes have thin and low transverse ribs, which often cause dissatisfaction. This is because in order to achieve a larger negative tolerance, the reduction amount of the first few passes of the finished product is too large, the iron shape is too small, and the hole shape is not full.
7. The cross section is oval
Inferior threaded stainless steel pipes have an oval cross section. This is because the reduction amount of the first two passes of the finished roll is too large in order to save materials.
In the face of fierce market competition, the company always takes creating excellent quality as its own responsibility, aiming at customer satisfaction, being sincere and trustworthy, and taking preferential prices as its principle, grasping the market policy of quality, promotion of management and development. The products sell well in major cities in China, and have won the trust and praise of the majority of users. Here, we sincerely invite new and old customers at home and abroad to visit, inspect, supervise and negotiate business cooperation. At the same time, domestic and foreign customers are sincerely invited to visit and guide and participate in the development of valve products.
According to the effective operation of the ISO9001 quality system, Junkai has established a perfect quality inspection agency and formed a perfect quality control network. With sophisticated process equipment, high-quality talents and service awareness, we ensure and improve the technical content of products and effectively protect the ultimate economic interests of users.
Junkai always pursues the tenet of “quality first, credit first”. To provide users with high-quality products and good and thoughtful after-sales service. Warmly welcome friends from all walks of life to discuss cooperation and create brilliance together!