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Development of neck flat welded flanges
How to distinguish with neck flat welding flange is good or bad？
Development of neck flat welded flanges
In the past 15 years, China’s economy is in the middle and late stage of industrialization. To build an effective foundation for our many industries. It not only shows the flourishing demand for equipment machinery; Clearly put forward the development strategy of reviving the manufacturing industry.
At the same time, in addition to the strength improvement, clearly put forward the idea of building a “resource-saving and bad protection society” : as the key basis for the “eleventh Five-Year Plan”.
Therefore, the implementation of scientific development, with the help of technological progress, according to the optimization of economic structure, enterprise integration, expansion of operation scale, so that the social economy has a multi-faceted development.
Although the overall level of China’s neck flat welded flange industry has been improved to a greater extent, the quality is still not very stable, such as running, bubbling, dripping, leakage phenomenon in domestic neck flat welded flange frequently appear.
In addition, the supporting capacity of China’s flanges is still different from that of developed countries. The market situation of flat welding flanges with neck is grim, and the market of some low-grade flanges has become saturated, and the situation of oversupply has occurred, which has prompted the development of small and medium-sized enterprises to become more difficult.
And even the relatively high technical content of products in the international market competition is also extremely fierce. Today’s China is in the flange market, but in the field of high-end valves are still imported, which is also the future of China’s valves need to improve the field, in order to truly promote the development of China’s valve industry.
However, from the beginning of previous years, the road to localization is difficult, and today’s basic parts have become a weak point that restricts the development of domestic manufacturing to high-end, and China’s domestic production of high-end equipment parts and components will further increase during the 12th Five-Year Plan period.
How to distinguish with neck flat welding flange is good or bad？
When we buy a product, the first thing to worry about is the quality, most people are hoping to buy a moderate price and good quality products, then how to identify the quality of a product? Let’s take a look
Through data analysis, we have sorted out a total of five methods, first compared the price, the market flange, the cheapest forging, casting and forging second, the comparison price of pure forging is the highest, and then look at the quality inspection, do a destructive test, the flange is divided, the forged trachoma and the pure forged flange is not, sometimes there will be cracks in the cast and forged flange
What we see with the naked eye is that there is no scratch and size on the surface, the forged flange usually has a negative square inch of 1-5mm, the marginal chamfer is irregular, the burr in the hole is not smooth, and the forged flange is small, weighing the weight while measuring the size, the same scale of the flange, the forged weight will be lighter than the forged weight
Then after all the measurements, we next choose the strength of the manufacturers, to produce these needed products, of course, the strength of the manufacturers, some of the qualifications are complete, so find the manufacturers are more at ease
