Which provisions of API 671 are beyond the capabilities of many domestic manufacturers?
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As an international standard, the API671 coupling standard seems to be beyond the capabilities of well-known domestic manufacturers; companies such as Wuxi Chuangming and Dandong Klon fail to meet the API 671 requirements. To be precise, it’s the factory logo that is applied. So the question is, exactly which aspects of API671 are so difficult to meet the standards?
Does this depend on the specific manufacturer? During the consultation phase, they act very capable and seem to be able to handle anything, but it’s only when it comes to signing the contract and discussing the terms that they start to take things seriously. For example, in the video on WeChat Moments, several perpendicular lines need to be drawn – seemingly 4 of them – with the others being transparent. The operations department is required to meet the client’s requirements; any objections from the technical department are invalid, and these requirements must be fulfilled.
I’m really frustrated by those salespeople who think they can get things done just by making such demands; such people are a scourge to China, harming both others and themselves.
Some property owners can be persuaded to agree. Even if the deal doesn’t work out, at least there’s one more potential client, and maybe cooperation is possible elsewhere.
Well, the internationally accepted procedure is for the manufacturer to provide a deviation table, which is then approved by the owner. In fact, for foreign manufacturers like Johncrane, if you ask them to submit a bid, they will still offer some kind of deviation. The difference is that domestic manufacturers do not say they are unable to meet the requirements before submitting bids; they only tell you once they win the bid and can no longer hide it. Foreign manufacturers, on the other hand, submit the deviation table at the early stage of bidding. The measures we have taken: 1. After the MR document was prepared at the design institute, we invited the manufacturer to the institute for technical clarifications. Generally, they are all experts in the field; as long as you appear humble and have some basic knowledge, they will usually tell you the truth. Occasionally, business people would stop me from speaking, but that’s rare. 2. Include penalty clauses in the procurement contract. For example, if it becomes impossible to meet the technical requirements after the contract is signed, the seller shall bear all consequences. Haha, it’s actually just empty talk too – what responsibility can a supplier really take? It’s already very kind of them if they don’t hold you back.
Yes, yes, I truly understand it. So, for those things that domestic manufacturers cannot do, unless a problem actually arises, they won’t list for you exactly which aspects of API 671 are not met. So, I still don’t know which clauses in API671 should be given priority. . . . . . .
The moderator is a great comrade. Generally speaking, domestic design institutes prefer it when manufacturers claim there are no deviations, so that they can turn a blind eye. I have the 2007 version here; actually, there isn’t that much that is truly related to design. For the rest, the key is to look at the clauses listed in the specification data sheet; that’s about it. On the other hand, for domestic manufacturers, those you mentioned work quite well; at least for low-power models (below 37 kW), I’ve used several of them and they’re all pretty good. A high-power model simply means that the lack of usage experience doesn’t imply it’s not good.
Well, domestic products are also very useful; we mostly use domestic metal diaphragm couplings. I just want to know more about the manufacturer.