With the improvement of people's quality of life, everyone will choose products that are safe for our health, such as the water pipes used at home. Everyone will choose 304 food grade stainless steel water pipes, because this water pipe meets the food safety regulations and is not harmful to our health. But did you really choose the right one when buying this kind of water pipe? Not all called 304 stainless steel can make drinking water pipes! Now there are a lot of 304 stainless steel decorative tubes in the market that serve as drinking water pipes, which can be used to sub-charge and deceive consumers. So as a manufacturer of 304 food grade stainless steel water pipes, let's talk about the difference between the authentic 304 food grade stainless steel water pipes and 304 stainless steel decorative pipes:
1. Different production process:
The wall thickness of the minimum specification DN15 of sanitary food grade stainless steel 304 water pipe is 0.6mm-0.8mm, the allowable deviation does not exceed ± 10% of the nominal wall thickness, the weld seam requires relatively high quality, flattening, flaring, bending, drawing The performance requirements of the extension test are very high, and the test water pressure is required to reach more than 2.5Mpa. The production efficiency is generally 1.5 meters per minute, and online eddy current flaw detection must be carried out during the production process, and sometimes a hydraulic test must also be done. The wall thickness of the 304 stainless steel decorative tube is not clearly specified, the quality requirements of the weld are not high, and the pressure on the tube is not clearly required. The production speed is very fast and the production efficiency can reach 20 meters per minute.
2. Different fields of application:
Sanitary food grade stainless steel 304 water pipes are mostly used in water supply and drainage pipelines, gas pipelines, food processing pipelines, medical transmission pipelines, etc.; 304 stainless steel decorative pipes are mostly used in industries, home decoration and other fields.
3. The adopted standards are different:
The standard adopted for 304 food grade stainless steel water pipes is GB/T29038-2012 "Technical Specifications for Thin-walled Stainless Steel Pipes". The heavy metal nickel, sulfur, phosphorus, lead and hexavalent chromium contained in the heavy metal migration amount are within the standard, long-term use will not accumulate scales, is not easy to be contaminated by bacteria, there is no need to worry about the impact of water quality, and it can eliminate the secondary water Pollution. The standard used for 304 stainless steel decorative pipes is GB/T18705-2002 "Decorative Welded Stainless Steel Pipes", which cannot directly contact with food and be used as drinking water pipes.
The above is the difference between our 304 food grade stainless steel water pipe and decorative pipe, I hope to help you a bit.
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