Wall thickness of Sch20

For the data on Sch20 wall thickness, you can refer to the following sources: 1. **Standards: Relevant standards** such as those specified in GB and GB/T standards can be consulted. For example, GB/T 8163 contains relevant regulations on seamless steel pipes. 2. Industry standards: Relevant industry standards can be looked up, such as those in the petrochemical industry. For example, one can consult the standards issued by relevant organizations such as the Sinopec Group Standards or Sinopec Engineering Group Co., Ltd. 3. Design manual: Reference can be made to the design manuals and standard specifications of design institutes or petrochemical engineering companies, which may contain requirements and regulations regarding the Sch20 wall thickness. 4. Manufacturer information: You can consult the relevant manufacturers, who usually provide information on product specifications and standards. 5. Relevant forums and websites: On the relevant forums and websites in the petrochemical industry, there are sometimes discussions on sharing experiences and technical insights; you can ask questions or search for relevant information there. It should be noted that there may be differences across various industries, regions, and standards; therefore, it is best to conduct inquiries and make confirmations based on the specific circumstances. .

Neither HG 20553 nor ASME JIS have such a specification, just as you said. Design institutes should provide the production standards for pipes.

Yes, a renowned design institute has specified four fields in its European standard series: DN, outer diameter, wall thickness (SCH), and wall thickness in mm. I just don’t know its origin.

Wall thickness Sch20 in HGT 20553-2011 (DN≥200), wall thickness Sch20 in HG 20553-93 (DN≥50).

You can refer to the corresponding pipe specifications and wall thickness grades in ASME B36.10.