HG/T 20537.3-1992: Chemical apparatus of austenitic stainless steel welded pipe technical requirements

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Scope

This standard specifies the specification, dimension, manufacture process, technical
requirements, test methods, inspection rules, marking and packaging and quality certificate
with regards to the welded austenitic stainless steel pipe for chemical, petrochemical and
pharmaceutical industries.
This standard is applicable to the welded austenitic stainless steel pipe for chemical plant
installations (hereinafter referred to as welded pipe), which is produced by the continuous
automatic welding without welding wire.