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See Chinese contents: GB/T 32970-2016 GB/T 32970-2016: Longitudinal submerged-arc welded steel pipe for high pressure service at high temperatures
This Standard specifies the terms and definitions, ordering contents, dimension, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, as well as package, mark and quality certificate of the longitudinal submerged arc welded steel pipe for high pressure serve at high temperature.
