Screw stud standards
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Question: In the HG/T21520 standard, do the studs refer to double-ended studs or fully threaded studs? If anyone knows, please tell me. Thank you.
Fully threaded studs can withstand high pressure and high temperatures, while double-ended studs can only handle PN4.0 MPa and a maximum temperature of 400°... It should be the double-ended studs
According to the literal meaning, it should be a fully threaded stud
It is a fully threaded stud. Refer to Table 2.0.2 of HG/T20520-2014, the Material Details Table, which clearly indicates that it is a fully threaded stud
Full-threaded studs can withstand high pressure and high temperatures, while double-ended studs can only handle PN4.0 MPa and a maximum temperature of 400°; it is clearly indicated that these are full-threaded studs
Table 2.0.2 of HG/T20520-2014, the material details table, shows that it is fully threaded studs.
Got it, thank you. I only have HG/T20520-2005; I don’t have HG/T20520-2014.