This standard specifies the dimension, appearance, weight and permissible deviation, technical requirements, test methods, inspection rules, packing, marking and quality certificate of the low alloy steel plates for low temperature pressure vessels.
This standard is applicable to the low alloy steel plates in thickness of 6mm~120mm (hereinafter referred to as "steel plates") that are used for manufacturing the pressure parts of -20℃~-70℃ low temperature pressure vessels.
Foreword I
1 Scope
2 Normative References
3 Order Contents
4 Representation Methods of the Designation
5 Dimension, Appearance, Weight and Permissible Deviation
6 Technical Requirements
6.1 Designation and Chemical Compositions
6.2 Smelting Process
6.3 Delivery Condition
6.4 Mechanical Properties and Processing Properties
6.5 Ultrasonic Testing
6.6 Surface Quality
7 Test Methods
8 Inspection Rules
9 Packing, Marking and Quality Certificate
10 Rounding off of Numerical Values
