Are there any qualification requirements for the design and manufacture of pressure vessels that are not classified?
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Designed in accordance with GB150, but not classified into any category; pressure vessels that are not subject to the regulations regarding tolerance limits. According to TSG 21, it is not necessary to affix a design approval mark to such pressure vessels. Since no marking is required, does that mean there are no requirements regarding qualifications for their design and manufacture? No design qualifications are required; non-pressure vessel manufacturers, such as steel structure manufacturers, can also carry out manufacturing?
No qualifications required. It’s still best to hire a professional factory to do it, as manufacturing containers requires specialized equipment. This is even more true if it is a hazardous medium.
The quotes from non-professional manufacturers are low
Manufacturing units may not require any qualifications, but those with such qualifications can offer greater assurance regarding product quality
Although no special qualifications are required, it’s still better to work with a qualified manufacturer – one that specializes in steel structures – as the quality is likely to be insufficient otherwise
Pressure vessel manufacturers meet all requirements in every aspect: their personnel, materials, equipment, and welding techniques are all of high standard. Letting non-pressure vessel companies handle it introduces many uncertainties.
That’s the reasoning behind it. But if the project aims to reduce costs, what should be done?
The project team believes that as long as it does not violate regulations, it can be carried out.
The primary goal of the project is cost; everything else is secondary. How to break it?
Considering the level of risk associated with the materials, it is best to turn to professional manufacturers for these tasks. Professional firms are better at carrying out non-destructive testing, heat treatment, welding, and selecting appropriate materials. Steel structure manufacturers may offer lower prices, but they cannot guarantee the proper operation of the equipment over time; issues may arise one day, such as problems with the equipment or leaks, which in turn results in losses for those manufacturers
Is the primary goal of the project cost? Hehe, the concept is wrong from the start