HG20593-97. HG5010-58。 What are the criteria? How are they distinguished? Thank you

2018-05-08View Original

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This post was last edited by Catalyzing a Grain on 2018-5-8 11:43 to HG20593-97. HG5010-58。 What are the standards for JH81-94? Are there new standards and old standards, and how can they be distinguished based on the standards? I’m new to this field and would appreciate some guidance from those who are more experienced

Reply #22018-05-08

HG/T20593-2014 Technical Specification for Welding and Inspection of Steel Chemical Equipment; HG/T 5010-2016 Ammonium dihydrogen phosphate for flame retardants; JB/T 81-2015 Plate-type butt-welded steel pipe flanges

Reply #32018-05-09

They are referring to the French standard. . .

Reply #42021-01-21

The currently used flange standard is generally HG/T20592-2009; the older standards have been invalidated

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HG20593-97. HG5010-58。 What are the criteria? How are they distinguished? Thank you

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