How to establish drawing standards for chemical engineering equipment
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I would like to ask the experts: generally, for A1 drawings, the size of the title block is 180×56, but what about A2 and A3? Should the same size be used as well? Some devices are very small, and A3-sized drawings are sufficient; in such cases, should we still use a title bar of 180×56 along with a technical specifications table of the same width? In this case, the A3 drawing won’t fit. However, I checked and found that it’s generally recommended for companies to use a unified title block. Do you have any good suggestions? Also, could anyone provide some drawing standards from large, reputable design institutes? For example, things like fonts, letter spacing, line spacing, font size, line thickness, layers, annotation scale, and other related detailed specifications! In our company, in the past, each person would draw their own drawings, which made things quite chaotic. So now I want to standardize the company’s drawings, but there are many details that are difficult to find. For example, just considering the use of fonts. I saw that the standard uses Long SimSun and SimSun. There are also some recommendations to use the hztxt English Romans font. I choose to use Long Fangsong now, as our company recommends using both Chinese and English descriptions. The Long Fangsong font works well for displaying both languages, but it requires a lot of memory and is not suitable for external communication. Another option recommended is the use of linear fonts like hztxt. These fonts are widely used, require less memory, and are conducive to communication; I would like to adopt them as well. The issue is that hztxt displays Chinese characters in a way similar to Chang Fangsong, but its performance with English characters is quite poor (Roman fonts should be used for English). In the technical specifications, Chinese characters can be displayed easily using Chang Fangsong, but Roman fonts or other commonly recommended linear fonts for English result in overly large text sizes, preventing them from fitting within certain cells. If spacing is set only for these English characters, it would be too cumbersome and inconsistent. I’m very confused; I really need some drawing guidelines from large design institutes to use as a reference. But it’s difficult to find online; I searched on forums, yet the information available isn’t detailed enough, and there are no drawing standards for chemical processing equipment and similar items. I hope that those who have worked in design institutes on this forum can share with me the relevant regulations. Drawings aren’t necessary; I understand that drawings are subject to confidentiality requirements. What’s needed are just the drawing standards to ensure consistency. Especially for the drawings of A1, A2, A3, and A4. It mainly involves relevant specifications such as frame diagrams, technical specification tables, technical descriptions, and annotations. If you have them and have time, please send them to me at z17534948@126.com. I would be extremely grateful!
I think the width of the title bar should be slightly less than that of A4 paper
The font is indeed a problem; I haven’t paid much attention to it usually. But once, when I took a drawing I had created for translation, the font in the translated version was unbearable to look at. It took me a long time to figure out what was going on, and in the end I gave up…
The width of the title bar is 210 mm, which remains the same regardless of the drawing number; the height may vary from one unit to another.
There are standards, but they are not strictly mandatory; companies are still allowed to make slight adjustments based on their actual circumstances. Our PDFs are encrypted and cannot be uploaded; you’ll need to download them on your own to study them. GBT 10609.1-2008 \"Technical Drawing – Title Blocks\", GBT 10609.2-2009 \"Technical Drawing – Detail Blocks\"
You can refer to the drawing method in the title bar of the book “AutoCAD 2005 Pressure Vessel Design”
Yes, the title bar seems to remain unchanged; it has nothing to do with the drawing. It’s either 210 or 180 – I think it’s 180
Now there is a question: since some of the equipment are non-standard, they are small in size and have simple structures, such as some small storage tanks. Using A3 paper for the drawings makes things much clearer. However, if the title bar on an A3 drawing is 180 units wide, it takes up too much space. If an A1 drawing is reduced in size to be printed on A3 paper, the details on the drawing become unreadable
HGT 20668-2000 specifies the requirements for preparing design documents for chemical equipment. If you work in a design institute, you should refer to these regulations; the assembly drawings produced by manufacturing plants are also similar to those specified here. As for the content of the title bars, it still needs to comply with the standards.