What is EN10204 3.1 and 3.2?
What does mean EN 10204?
EN10204 is one kind of MTC standard. When we buy steel pipe, pipe fittings, and other steel products, manufacturers should issue MTC to the buyer. MTC is the abbreviation of mill test certificate that contains all the specifications of a steel pipe product. including size, weight, chemical composition, mechanical strength, heat treatment status, test results, traceability, etc. These information is intended to ensure the quality of the ordered steel and to inform the buyer of the circumstances in which the project is to be used. As a result of the MTC certificate standards, EN 10204 is the European standard for inspection documents for steel products, including steel pipes, fittings, steel plates, valves, sucker rods, etc. In order to prove that the results of a particular test conform to customer orders. There are two types of EN 10204 MTC 3.1 and 3.2, but What is EN10204 3.1 and 3.2? Let us make the explanation as below.
EN10204 3.1 mill certificate:
It requires the manufacturer to display the current test results for the sale of steel pipes. Sampling methods According to the relevant standards.
3.1 MTC requires the test organization to be an independent party, and the factory is not authorized to review the test results. If the steel pipe manufacturer passed the ISO 9001 audit of the EU certification body, the manufacturer is eligible to issue EN 10204-3.1 MTC. Buyer information should be specified on the MTC quality certificate, a buyer needs a MTC quality certificate. If the manufacturer does not pass the ISO 9001 or ISO 9001 Certificate of the EU inspection Agency, the manufacturer is not entitled to release the MTC of En 10204-3.1. In this case, the manufacturer shall apply to the third party of the inspection Agency for an en 10204-3.2 quality certificate.
EN10204 3.2 mill certificate:
EN 10204 3.2 Certificate is the most stringent standard for steel pipe products. It indicates that certification should be subject to additional sign-off and independent verification, which is related to all tests, and 3.2 certificate costs are higher than 3.1. It is not only the manufacturer testing department, but also the completely independent part, third-party inspectors, or individuals, buyers or government representatives also have the right to verify the test results. The EN 10204-3.2 certificate must be issued by an EU authorized inspection agency. The test is the same as the purchase order of the third party inspection organization through the relevant inspection or the testing of the ordered materials. The name of the manufacturer and buyer shall also be indicated on the quality certificate of EN 10204-3.2.
Then what is the differences between EN10204 3.1 and 3.2?
EN 10204 has 4 types of document types, 2.1,2.2,3.1 and 3.2. Type 2.1 and 2.2 are verified by the manufacturer. Types 3.1 and 3.2 are not only verified by the manufacturer.
Type 2.1, content is the declaration of compliance with the order verified by the manufacturer. Type 2.2, order conformance declaration, and indication of non-specific inspection results verified by the manufacturer.
Type 3.1, order declaration, and indication of specific inspection results. An inspection representative authorized by the manufacturer, but independent of the manufacturing department. Type 3.2, order declaration, and indication of specific inspection results. An authorized inspection representative of the manufacturer, independent of the manufacturing department and the buyer's authorized inspection representative or an official examiner.