Pressure vessel type test
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Article 4.1.2 of the General Regulations specifies requirements regarding “type testing”: Before manufacturing bottle-type containers and vacuum-insulated cryogenic containers for the first time, the manufacturer must produce sample containers and have them undergo type testing by a type testing institution approved by the General Administration of Quality Supervision, Inspection and Quarantine. When is it a bottle-shaped container? Should prototype tests be conducted on fixed-pressure vessels before their manufacture? I hope someone who knows the subject can give me some advice.
Fixed ones are not included; gas cylinders are considered mobile, right?
The Major Pressure Vessel Regulations apply only to fixed pressure vessels, non-metallic pressure vessels, simple pressure vessels, and ultra-high pressure vessels. Mobile pressure vessels and gas cylinders are not included. So when he mentioned a bottle-shaped container, it’s a bit hard to understand.
Bottle-shaped containers are characterized by being designed as pressure vessels, and they are weld-free structures made by heat spinning seamless steel pipes to form their seams. It is commonly used for station cylinder banks in car gas stations. Such as the cylinder bank in a CNG refueling station.