Trademark issues
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I would like to ask. Regarding the trademark on the welded valve. Is there a **standard code? Do all pipes larger than DN50 need to have labels welded on them? Is it qualified without a welding mark?
The trademarks you mentioned that are welded onto valves are all OEM products: lol;P
Generally, for valves manufactured by the brand manufacturer itself, the trademark is cast onto them. If brand-name valve manufacturers outsource production to other factories, it is possible for them to weld brand labels on the valves; however, there are many counterfeit products, which are fake brand-name valves with brand labels welded onto them, and this has become quite common
Permanent markers are also included, welded onto it. If welding is not allowed, then is it also against standard requirements to mark forged steel valves with a steel stamp bearing the brand name? Preventing counterfeiting cannot be used as a primary preventive measure. It is more effective for enterprises to strengthen comprehensive management, such as implementing measures like ensuring that each product has a unique serial number.
There are **standard ones, usually cast trademarks.