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 Temperatureshttps://www.chinesestandard.net, 8. jan. 2017 - 23 sider 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. |
Indhold
Technical Requirements | 10 |
Etch Test for Macrostructure and Defect of Steels | 12 |
Test Methods | 21 |
Package Mark and Quality Certificate | 23 |
Almindelige termer og sætninger
allowable wall thickness Analysis of Iron base metal tensile batch GB/T Charpy Impact Test Chemical Analysis chemical compositions complement weld joint Cupferron degree of curvature demand of purchaser following provisions greater than 0.4mm heat affected zone heat treatment system Hoop stress hydrostatic pressure test Impact test Kejian length of steel level shall meet 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 SY/T provisions of Table purchaser and supplier Ray detection repairing and grinding residual wall thickness Roomtemperature Roomtemperature Roomtemperature Sampling Quantity specified sizing length specimen per batch Steel and Alloy Straight edge submerged arc welding t≤30mm steel pipe tempering temperature 720°C~760°C Test Method Ultrasonic detection wrestling pit yield strength