Why are valves that meet American standards more expensive than those that meet Chinese standards?
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Hello everyone. We know that the common standards for valves are American standards and national standards. I’ve seen valves that meet American standards as well as those that meet national standards; they are used in the same processes and are made from the same materials. But why is there such a big difference in their prices? Is there anyone who can explain this?
Are all of them manufactured domestically? You get what you pay for
The difference lies in the details; more of the same American standard material is used, which results in a heavier valve body
Raw material control, processing techniques, inspection and testing, etc., are all implemented with stricter requirements than those specified in national standards. As for the standard specifications themselves, American standards are more detailed and specific than those of national standards. Of course, this is generally the case... It’s actually a common phenomenon: it has become very difficult for people in China to trust one another. In pursuit of tangible benefits, prices are used as a deciding factor first... Valves made to Chinese standards should have the same quality as those made to American standards; otherwise, their prices won’t be that low. If the prices are similar, well, it seems that Chinese-standard valves aren’t as reliable as those made to American standards. Naturally, when reliability is the priority, one would choose the more reliable option. Unfortunately, Chinese-standard valves are forced to engage in price wars, and if they want to make a profit from such wars... it becomes a vicious cycle! (Why do most people think that national standard products are not as reliable as those meeting US standards?) The Chinese people are skilled, but they’re all too smart; it’s hard for smart people to trust other smart people, and they’re also afraid of suffering losses...)
Yes, they are all domestically produced. For example, valves with the same serial number will have different prices if priced according to American standards
In other words, the reason for this price difference is not reflected in the domestic valve numbering? (Just like the wall thickness issue you mentioned)
To understand this clearly, one should compare the American standard requirements with those of the national standard; by doing so, it is possible to see the differences in terms of pressure, valve body dimensions (which correspond to the valve wall thickness and weight). In short, the American standards are more stringent, which is why the prices are also higher
Using more of the same American standard material will also result in a heavier valve body
The pressure ratings are different. The weight of the steel used varies.
There are also differences in manufacturing standards and inspection methods (I’m referring to genuine American standards, not fake ones)
This is related to our country’s basic national conditions and the socialist path with Chinese characteristics. Not all imported products are necessarily of high quality, but when two valves are presented to people, most will surely choose the imported ones. In fact, some domestically produced valves are also excellent, such as high-pressure valves and steam traps, among others. Additionally, there are lifting machinery, compressors, and so on