What to do if the actually purchased materials do not match the drawings?
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Our company is a manufacturing firm, and we have currently received several orders for mechanical fabrication (not containers, nor chemical processing equipment, but rather various mechanical components). The drawings were provided by the client, and foreign materials are to be used; the procurement department sources similar domestic materials instead. I hope some expert can give me some advice on what to do in this situation. If the material is unavailable, the company will suffer significant losses, and the delivery time for reordering it will definitely be delayed. If it can be used, what should be the procedure?
Compare the chemical composition and mechanical properties of the materials, and submit the comparison results to the customer for confirmation.
Be sure to communicate with the customer first to confirm that substitution is possible. In fact, the performance of domestic alternatives is currently no worse than that of foreign ones.
Find customers to seek substitutes. . And it’s in writing, too. . To avoid arguments.
Without customer approval, the completion inspection is likely to be rejected.
One principle: it must be approved by the users. Otherwise, even if the product is ready, if the software documentation does not match, the other party can simply refuse to accept it. Methods: 1. First, make thorough preparations by matching the standards for the materials you purchase (such as standard numbers, chemical composition, mechanical properties, impact values, and welding qualification requirements) with those of foreign grades, in order to identify any differences ； For the physically purchased materials, further physical and chemical analyses are conducted in accordance with the mechanical property requirements of the foreign brands, ensuring that their performance is no lower than that of the foreign brands ； Special processes (such as expansion joining, low-temperature impact, and field connections on the outside) must be fully identified, in order to convince others of the need for proper material preparation. 2. Ensure good communication – foreigners are generally not easy to communicate with. But try to communicate on the basis of having sufficient information ready. In particular, it should be explained from the user’s perspective (for example, maintenance and repairs carried out years after installation, including requirements regarding welding materials, heat treatment, inspections, and external interfaces), aiming to address doubts and questions openly and transparently through communication. (But one also needs to pay attention to the methods.) ) Keep this in mind: don’t focus only on the difficulties of making your own purchases, etc. This has nothing to do with the users at all. From the user’s perspective, it’s sufficient to mention one’s own difficulties, on the condition that it gains the user’s approval. Just ask the other party to understand. But the key is to get the other party to approve it technically. One can even find ways to increase the use of verification in order to truly gain the other party’s approval. 3. Follow-up. For subsequent purchases, approval must be obtained first before making the purchase. It’s possible that the other party won’t respond right away, but one must not rush to make a purchase. Since the other party disagreed from the start, buying it and creating a fait accompli gives it a somewhat coercive feel, so they certainly won’t agree anymore. After all, users won’t risk losing their jobs for your benefit.