The pressure vessel factory needs to manufacture pressure vessels for me – how many drawings are required?

The documents provided by the container manufacturer generally include: one set of as-built drawings, one certificate of conformity and quality certificate, inspection reports, strength calculation sheets, safety valve discharge calculation sheets, and copies of nameplates. You need as-built drawings; you can negotiate with the manufacturer, and generally they will be able to meet your requirements.

TSG R0004－2008 Safety Technical Specifications for Special Equipment – General Requirements for Product Delivery Documents. When pressure vessels are delivered, the manufacturing unit shall provide the user unit with at least the following technical documents and materials: (1) As-built drawings. The as-built drawings must bear the approval stamp of the design unit (a photocopyed stamp is invalid). If there are any changes such as material substitution, alterations to non-destructive testing methods, or modifications to machining dimensions during manufacturing, the manufacturer shall clearly indicate these on the as-built drawings in accordance with the requirements specified in the written approval documents issued by the design party. The marked area should contain the signatures of the person who made the changes and the reviewer, along with the date of the modification. The as-built drawings shall be stamped with an as-built seal, which shall bear the name of the manufacturing unit, the manufacturing license number, and the words “As-Built Drawings”. (2) Certificate of conformity for pressure vessel products (including the product data sheet; see Annex C for the format), quality certification documents (including certificates of material for the main pressure-bearing components, material lists, quality plans or inspection plans, structural dimension inspection reports, welding records, non-destructive testing reports, heat treatment reports along with automatically recorded curves, pressure test reports and leakage test reports, etc.), and photocopies of the product nameplate (or copies, digital photos with dimensions no smaller than those of the nameplate). (3) Certificate of supervision and inspection for the manufacture of special equipment. (4) The pressure vessel design documents specified in 3.4 of these regulations. 4.1.4.2 Factory delivery documents for end caps and forgings The manufacturer of pressure vessel components such as end caps and forgings shall provide the user unit with quality certification documents for these components. 4.1.4.3 Completion documents for on-site welding The pressure vessel that has been welded on-site and passed inspection, after completion, requires the construction unit to provide, in addition to the technical documents and materials specified in 4.1.4.1 and 4.1.4.2, the technical data related to welding and quality inspection to the user entity. 4.1.5 Design modifications: The manufacturing unit must obtain written approval from the original design unit for any modifications to the original design documents, and must keep detailed records of the modified areas.

Also, I’m not sure – do the delivery documents such as drawings have to be in Chinese? The drawing documents in our factory (a foreign-funded enterprise) are in English, but the safety supervision department insists on having them translated into Chinese. Is there any mandatory regulation regarding this? Please ask an expert for guidance; thank you! Please specify the name of the regulation and the relevant clause. Even the safety supervision agency requires that the tag names of on-site equipment cannot be in English; they must also be written in Chinese! It really feels like a “threat” – **what’s wrong with the department?**

I. At least 2 sets of stamped drawings are required: 1 set of as-built drawings (one set per unit; if there are multiple units, one set per unit), and 1 set for the manufacturing unit’s own archives. Requirements may vary from place to place; here, it is required that there be one copy in the workshop and another in the technical department. II. There is no need for localization. But if the Safety Supervision Bureau requires localization, I think it’s better to follow their instructions. Definitely don’t offend GV (**the department**) – you can’t fight against someone much stronger than you, you know.

Two pieces are also acceptable, but this must be discussed with the manufacturer. The official language of the People’s Republic of China is Chinese; the tag numbers of field equipment should be in Chinese for the equipment used in our country. There is no requirement regarding the use of Chinese on drawings, but the delivery documents should be in Chinese for our customers here, which is also an indication of a user-friendly approach by enterprises.

According to relevant regulations, the manufacturer provides only one set of drawings with design and completion stamps; special requirements can be negotiated.

If you need two sets of as-built drawings, please indicate this in the remarks section of the design assignment sheet; two sets of as-built drawings are required to be provided to the equipment users. The designers will definitely agree to your request and make an extra copy to distribute to various departments. Additionally, the special inspection agency’s representative on-site will have no objections as long as this requirement is stated in the design drawings, and they can stamp it for you twice. This post was last edited by chenhao0713 on 2009-2-5 13:40.]

If you need 2 stamped drawings, I think you should provide the manufacturing unit with 3 stamped drawings, as a stamped copy should also be kept in their archive.

The general requirements for the number of drawings are as follows: If there is an agreement, the required number shall be provided in accordance with what was agreed upon earlier. Generally, to manufacture 1 piece of equipment in a factory, the following number of drawings are required: 1 copy for the process department, 1 copy for the inspection department, 1 copy for workshop construction, 1 copy for archiving, and 2 copies as as-built drawings. The above archive drawings and as-built drawings must have approval stamps. Based on the above, you can provide 6 sets of drawings, of which 3 sets should have approval stamps, while the remaining ones can be blueprints without stamps ； You can provide at least 3 sets of drawings with approval stamps, while the rest can be copied by the manufacturing factory in plain form for their own use.

As a supplement, it is best for you to discuss this with the relevant departments, as it also involves complex issues such as inspection procedures during construction. It is best to follow the requirements of the relevant departments; some cases also involve local-specific regulations. (For reference)

Hehe! It’s not “blackmail”; it’s “adapt to local customs”! :Lol. Also, device identifiers are usually represented by letters and numbers; it’s not possible to use characters from the Chinese language for that purpose! Some of our equipment (pressure vessels) is imported directly, with English drawings; the regulatory authorities in charge of inspections and safety oversight have not requested that these drawings be translated into Chinese. They simply ask us to provide a translated version of the documents (it’s only natural to do that!) ).

At least 3 sets of stamped drawings must be provided, as per GB150 regulations, the user should keep one set; according to the relevant codes, the manufacturer is required to provide the user with the as-built drawings. If the user needs 2 sets of as-built drawings, then in total at least 3 sets of stamped drawings are required.