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HG/T 20537.4-1992 Technical requirements for large diameter welded austenitic stainless steel pipes for chemical plants HG/T20537.
HG/T 20537.3-1992 Technical requirements for austenitic stainless steel welded steel pipes for chemical plants HG/T20537.3-1992 St
This standard specifies the specifications, dimensions, manufacturing process, technical requirements, test methods, inspection ru
HG/T 20537.1-1992 Austenitic stainless steel welded steel pipe selection regulations HG/T20537.1-1992 standard download decompress
HG/T 20535-1993 Chemical solid material loading and unloading system design regulations HG/T20535-1993 standard download decompres
HG/T 20534-1993 Chemical solid raw materials and fuels preparation design regulations HG/T20534-1993 standard download decompressi
HG/T 20533-1993 Unified regulations on common terms and terms in the design of mechanized transportation for chemical industry HG/
This regulation applies to the design of powder material processing, storage, loading and unloading, transportation and packaging