Our company implements strict control measures for the purchase of raw materials.
1. Adhere to the use of large domestic cast iron production plant gray iron, to ensure that each batch of pig iron sources reliable and consistent.
2. Liquid iron used in cast iron bathtub needs 2-3 kinds of trace element content to be used in a certain proportion of pig iron, so as to improve the finished product rate. Pig iron raw materials are mainly HT22-24 and Mongolian pig iron.
3. Strictly follow the ISO9001 quality management requirements, each batch of raw materials to the factory must be accompanied by the original factory laboratory sheet. In addition, the production technology department of our company also carries on the spot inspection test to the raw material. And every month to the raw material supplier score record management.
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