In order to purchase qualified and quality-guaranteed stainless steel seamless elbows, what precautions do our users need to know before purchasing?
First of all, the most important aspect of examining the quality of stainless steel seamless elbows is its relevant qualification certificates. Why do you say that? This is because the qualification certificate with relatively high gold content will have strict regulations on the raw materials of the product, each process in the production process and the production environment. If the standard requirements are not met, the certification of the certificate cannot be passed. aspect of quality.
For the selection of stainless steel seamless elbows, first of all, it depends on whether the manufacturer has a production license, that is, the safety registration certification certificate of the pressure piping component manufacturing unit – “Special Equipment Manufacturing License”. The certificate issued by the General Administration of Inspection and Quarantine is valid for 4 years. To view the certificate, you can log in to the China Special Equipment Public Information Network to query relevant information.
Then you can also check whether the pipe fittings manufacturing unit has passed the ISO international quality certification, and finally you can go on-site inspection.