Before we buy stainless steel seamless elbows, we should learn to identify the qualified product materials and choose stainless steel seamless elbows that meet the quality standards. So how to identify the product material? The key to inspecting product quality is to look at its relevant qualification certificates.
1. For stainless steel seamless elbows, you should first check whether there is a production license, that is, the safety registration certification certificate of the pressure piping component manufacturing unit (“Special Equipment Manufacturing License”), which is valid for four years.
2. Check whether the pipe fittings manufacturing unit has passed the ISO international quality certification and is authoritative in the ISO international quality certification, such as Moody ISO9000 quality certification, measurement certificate, import and export rights, performance, etc.
3. Conduct on-site inspection after audit.
The above is what you need to know before purchasing stainless steel seamless elbows.