Should the raw materials of carbon steel flange be retested again after entering the factory?
We produce carbon steel flange products used raw materials are purchased from qualified suppliers, can become qualified suppliers that their raw materials are quality assurance, our factory is responsible for purchasing colleagues in the raw materials to the factory, qualified raw materials is producing high quality carbon steel flange, this link we can't careless, even if the raw material suppliers, they provide qualified raw materials, purchasing raw materials to our factory we still have to recheck.How do we check again You, after the raw materials to the factory, factory inspection department raw material inspector according to the requirements of the national material standard to the supplier provides the original quality certificate validity and content to verify, further to the specification of carbon steel raw material size, surface quality, identification (mainly refers to the material and furnace number) for inspection, qualified physical and chemical laboratory for PMI testing and mechanical properties testing.All qualified materials can be received into storage. We have a special storage site for storing carbon steel raw materials. After storage, the warehouse keeper is specially responsible for the color marking of raw materials, factory furnace number and other identification treatment of raw materials.The color mark represents the material of the raw material, responsible for the raw material warehouse manager this The purpose of the sample is to produce the carbon steel flange products used for raw materials will not be confused, according to the color label of the material identification, furnace number to get the raw materials.When carbon steel flange raw materials are out of the warehouse, the raw material keeper and receiver shall check the raw material specifications according to the requisition sheet, and the color mark and furnace number are correct before they can be out of the warehouse.
