Inspection Certificate 3.1 Acc. DIN EN 10204:20...

Hello members,, I am working in a erw steel tube making company as a QC manager, Now when I make a mill test certificate at the enclosure I use to mention that the certificate is as per EN-10204/3.1B standard , as the said standard is referring our process, so mentioning the said standard directly in mtc is ok or shall i have to ask an organisation to have this certificate first,then only i can put EN-10204/3.1 B standard in my certificate,Secondly I want to know,we are receiving our raw material, supplier certificate is inspection certificate/sometime mill test certificate,after receiving this raw material we are manufacturing steel tubes,sheets etc,so while making MTc I am writing the certificate is mill test certificate,is it okay or it should be material test certificate

EN 10204-3.2 certificate must released by the inspection agency that authorized by the European Union. Through the related inspection or the test for the material that ordered, to certify that the test result is the same with the PO from a third party inspection agency. Also on the quality certificate of EN 10204-3.2 shall specify the name of manufacturer and the buyer.

In Germany, inspection documents and certifications were originally specified in the standard DIN 50049. Later, the European standard EN 10204, was first published in 1991. As per EN10204, Inspection certificates and documents were of the following types:

It shall be permitted for the manufacturer to transfer on to the test certificate 3.1 relevant test results obtained by specific inspection on primary or incoming products he uses, as long as the manufacturer operates traceability procedures and may provide the corresponding inspection documents required.

A mill test report (MTR) and often also called a certified mill test report, certified material test report, mill test certificate (MTC), inspection certificate, certificate of test, or a host of other names, is a quality assurance document used in the metals industry that certifies a material's chemical and physical properties and states a product made of metal (steel, aluminum, brass or other alloys) complies with an international standards organization (such as ANSI, ASME, etc.) specific standards.

The 2.1 / 2.2 inspection certificates are about compliance with the order and are applied to the whole pump assembly. These certificates certify that the pump supplier has conformed to the relevant manufacturing standards whilst building the pump such as electrical, machinery at work etc.

A 2.1 certificate is a statement of compliance with the order by the manufacturer where no test results are provided. A 2.2 certificate is a statement of compliance with the order by the manufacturer based on non-specific inspections by the manufacturer. The 2.1 / 2.2 inspection certificates do not allow for any component traceability.

The 3.1 / 3.2 inspection certificates are only applied at the component level and never to an assembly or final product. They are generally for metallic components but can be applied to non-metallic. The 3.1 / 3.2 inspection certificates allow for component traceability at different levels and include the results from specific inspections, as detailed in the remainder of this guide.

A 3.1 inspection certificate can certify a batch of components or the raw material used in the manufacturing of a component. For example, a stockist of bar may supply a piece of bar with a 3.1 inspection certificate. This certifies that the batch of bar purchased by the supplier conforms to the material standard which applied when it was manufactured but does not certify that the particular piece of bar supplied matches the specific test certificate i.e. it is compliant bar manufactured within the tolerances of the material standard.

It is permissible for the pump manufacturer to transfer onto an inspection certificate 3.1 relevant test results obtained by specific inspection on primary or incoming products used (i.e. the inspection certificates of materials and external components used in the pump), provided that the manufacturer operates traceability procedures and can provide the corresponding inspection documents required. For example, the details from the bar supplied with a 3.1 certificate can be copied onto a certificate for the shaft that is made from the bar, i.e. the shaft can have its own 3.1 certificate.

Therefore, in summary, a pump supplied with an inspection certificate(s) 3.1 will relate to specific component(s) in the pump and not assemblies or the overall product. The 3.1 certificate(s) may relate to a batch of components or raw material from a supplier or to components manufactured by the pump company using raw materials from a batch with a 3.1 inspection certificate. There are no independently witnessed tests of specific components in a pump supplied with 3.1 certificate.

In addition, in order to issue a 3.2 inspection certificate for a component, there must be an independent verification that the correct process has been followed and the correct records have been maintained for component traceability (for example the melt number) when manufacturing the component. This independent verification can be undertaken by the customer or by an independent inspector. The independent inspector however can be the pump manufacturer itself so long as the person undertaking the inspection is independent of the manufacturing and quality control process at the company and can demonstrate they have suitable skills to perform the role. However, most customers would expect an established independent witness organisation such as Lloyds or Bureau Veritas to undertake this task.

Whoever undertakes the independent witnessing, it is important to note that they do not witness the actual testing of the component, only that the processes, documentation and traceability have been undertaken correctly by the component manufacturer. It is also important to note that the independent inspection does not have to be one visit per component but a single visit can witness a number of components. For example, an order for four pumps will have four castings that may be poured at different times. The 3.2 inspection certificates for each casting can be issued for all four following one independent inspection.

It is permissible for the manufacturer to transfer onto the inspection certificate 3.2 relevant test results obtained by specific inspection on primary or incoming products used (i.e. the inspection certificates of materials and components used in the pump), provided that the manufacturer operates traceability procedures and can provide the corresponding inspection documents required.

In summary, a pump supplied with an inspection certificate(s) 3.2 will relate to specific component(s) in the pump and not assemblies or the overall product. The 3.2 certificate(s) will verify specific components comply and are traceable, and that the process, records and traceability of the pump manufacturer have been independently witnessed by the customer or an independent inspector.

Customers should be aware that when they simply ask the pump manufacturer for a 3.2 inspection certificate that such a certificate relates to individual components in the pump and not the overall pump. As such, a customer should be specifying the individual components that require 3.2 inspection certificate(s), such as the casing, impeller, suction cover, shaft etc. otherwise the pump manufacturer may only issue a 3.2 inspection certificate for the components it deems necessary. If the customer later requires a 3.2 inspection certificate on a different component then, due to destructive testing, this may not be possible without remanufacturing the component, which will carry an additional cost.

Furthermore, customers requiring 3.2 inspection certificates should be clear if they require an independent witness organisation (such as Lloyds or Bureau Veritas) to undertake this, as it carries an additional cost. Without specifying who will undertake the independent witnessing the pump manufacturer can appoint a witness from inside its own organisation. If the customer asks to use an independent witness organisation they should also state if they require an independent witness for each and every component (which again could have significant cost for an order of multiple pumps) or whether one inspection can be undertaken for a number of components.

It should be clear from the above that without giving specific instructions when asking for a 3.2 inspection certificate for a pump, the customer may not get what they were expecting and that the costs quoted by different pump manufacturers could vary greatly depending on how they interpret the request. Furthermore, the additional costs to post-rectify the production of components not originally supplied with 3.2 inspection certificates would then have to be borne by the customer. 59ce067264

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