In order to ensure the quality of the rolls, Tangshan Yiliansheng Roll Co., Ltd. strengthens the process control in the production process control, conscientiously implements relevant standards, ensures that the products are delivered on time with high quality and quantity, and earnestly fulfills the principle of "serving users, being responsible to users, and satisfying users." ”, and hereby makes the following commitments:
1. Strictly follow the requirements of ISO9001:2008 quality system to control product quality and technological process to ensure on-time delivery and normal use of rolls.
2. The rolls produced by our company are all made of Benxi pig iron, and the content of harmful elements such as P and S is strictly controlled.
3. The molten iron in the working layer of the roll is all smelted by the medium frequency induction furnace, and the chemical composition of the roll is strictly controlled. The chemical composition of the molten iron before the furnace is analyzed by a direct reading spectrometer.
4. All products are annealed by resistance furnace for stress relief. After the goods arrive, they can be used directly on the machine without natural failure, which not only reduces the occupation of users' funds but also ensures product quality.
5. All products are inspected by ultrasonic flaw detection to ensure the inherent quality of the rolls and at the same time make the quality of the bonding layer of the centrifugal composite rolls more perfect.
6. After the rolls are transported to the site, if there are quality problems such as blisters, pores, porosity, excessive hardness of the working layer, and slag inclusion in the composite bonding layer of the rolls due to the supplier's manufacturing reasons, the supplier shall be responsible for compensation. And guarantee to arrive at the scene within 3 days to solve.
7. Seriously track the usage of products, listen to users' opinions humbly, and continuously improve product quality in line with the principle of being highly responsible to users.
Liaoning Yiliansheng New Materials Co., Ltd.