GB/T 32970-2016: Translated English of Chinese Standard. (GBT 32970-2016, GB/T32970-2016, GBT32970-2016): Longitudinal Submerged-Arc Welded Steel Pipe for High Pressure Service at High Temperatures
https://www.chinesestandard.net, 2017 M01 8 - 23 pages
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.
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Etch Test for Macrostructure and Defect of Steels
Package Mark and Quality Certificate
allowable wall thickness Analysis of Iron batch GB/T Charpy Impact Test Chemical Analysis chemical compositions complement weld joint Content GB/T Cupferron degree of curvature demand of purchaser Finished Product Analysis following provisions greater than 6.4mm heat affected zone heat treatment system Hoop stress hydrostatic pressure test Impact test Kejian length of steel line guided bend metal tensile specimen Methods for Chemical minimum allowable wall negotiation between purchaser Nominal outer diameter Non-destructive test Non-Roundness Normalizing and tempering normalizing temperature 900°C~960°C Piece by piece pipe end Pipe Heat Treatment pipe per batch pipe shall conform pipe shall perform Pressure of hydrostatic provisions of GB/T provisions of Table purchaser and supplier Ray detection repairing and grinding Roomtemperature Roomtemperature Roomtemperature Sampling Quantity specified sizing length Steel and Alloy steel pipe wall Straight edge submerged arc welding SY/T t>30mm steel pipe t≤30mm steel tempering temperature 700°C~750°C Test Method Ultrasonic detection wrestling pit yield strength