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Q/BQB 660-2018 English PDF (QBQB660-2018)

Q/BQB 660-2018 English PDF (QBQB660-2018)

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Q/BQB 660-2018: High strength steel plates for pressure vessels

This Standard specifies the dimension, shape, technical requirements, inspection and test, marking and quality certificate, etc. of the high strength steel plate for pressure vessels. This Standard is applicable to the high strength steel plate for high heat input welding steel and low welding crack susceptibility pressure vessels.
Q/BQB 660-2018
ENTERPRISE STANDARD OF BAOSTEEL
Replacing Q/BQB 660-2016
High Strength Steel Plates for Pressure Vessels
ISSUED ON: JANUARY 15, 2018
IMPLEMENTED ON: APRIL 10, 2018
Issued by: Baoshan Iron and Steel Co., Ltd.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Classification and Code ... 5
4 Information Required for Ordering ... 6
5 Dimension, Shape, Weight and Permissible Deviation ... 6
6 Technical Requirements ... 6
7 Inspection and Test ... 9
8 Reinspection ... 10
9 Package, Marking, Quality Certificate ... 10
10 Numerical Rounding off ... 10
Appendix A (Informative) Grade Comparison ... 11
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009 Directives for Standardization ?€? Part 1: Structure and Drafting of Standards.
This Standard was formulated by reference of GB 19189-2011 Quenched and Tempered High Strength Steel Plates for Pressure Vessels.
This Standard replaced Q/BQB 660-2016.
Compared with Q/BQB 660-2016, this Standard only made partial editorial modifications instead of technical modifications.
This Standard contains the steel B610E (08MnNiVR, 12MnNiVR), which is high heat input welding steel (welding heat input ???100kJ/cm); while B610CF (07MnMoVR), B610CF-L1 (07MnNiVDR) and B610CF-L2(07MnNiMoDR) are low welding crack
susceptibility steel.
The Appendix A of this Standard is informative.
This Standard was proposed by Manufacturing and Management Department of Baoshan Iron and Steel Co., Ltd.
This Standard shall be under the jurisdiction of Manufacturing and Management Department of Baoshan Iron and Steel Co., Ltd.
Drafting organization of this Standard: Manufacturing and Management Department of Baoshan Iron and Steel Co., Ltd.
Drafting staff of this Standard: Huang Jinghua.
This Standard was first-time published in July 2005; first-time revised in November 2005, second-time revised in July, 2006, third-time revised in April, 2009, fourth-time revised in August, 2010, and fifth-time revised in September, 2016.
High Strength Steel Plates for Pressure Vessels
1 Scope
This Standard specifies the dimension, shape, technical requirements, inspection and test, marking and quality certificate, etc. of the high strength steel plate for pressure vessels.
This Standard is applicable to the high strength steel plate for high heat input welding steel (???100kJ/cm) and low welding crack susceptibility pressure vessels. 2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy
GB/T 228 Metallic Materials ?€? Tensile Testing
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 232 Metallic Materials - Bend Test
GB/T 247 General Rule of Package Mark and Certification for Steel Plates (Sheets) and Strips
GB 713-2014 Steel Plates for Boiler and Pressure Vessels
GB/T 2970 Thicker Steel Plates - Method for Ultrasonic Inspection
GB/T 2975 Steel and Steel Products - Location and Preparation of Samples and Test Pieces for Mechanical Testing
GB/T 4336-2002 Standard Test Method for Spark Discharge Atomic Emission Spectrometric Analysis of Carbon and Low-Alloy Steel (Routine Method)
GB/T 8170 Rules of Rounding off for Numerical Values and Expression and
for equipment and structural parts such as pressure
vessels, hydroelectric pressure steel tube, etc. at
-50??C~100??C, etc.
a The grade within the bracket is the grade named according to the naming method of domestic standard; when using this Standard, the grade within the bracket can also be used. If ordering according to the grade of 07MnNiMoDR, the minimum service temperature of the material shall be instructed. 4 Information Required for Ordering
As required, the user is required to provide the following information sufficient to indicate the required materials when ordering:
a) Standard number;
b) Grade;
c) Specification and edge status;
d) Weight;
e) Use;
f) Minimum service temperature of material, if ordering by the grade of 07MnNiMoDR;
g) Others (such as particular requirements, etc.).
5 Dimension, Shape, Weight and Permissible Deviation
The dimension, shape, weight and permissible deviation of steel plate shall conform to the provisions of GB 713.
6 Technical Requirements
6.1 Grade and chemical composition
6.1.1 The steel grade and chemical composition (smelting analysis) shall conform to the provisions of Table 2.
6.1.2 The permissible deviation for the chemical composition of steel plate shall conform to the provisions of Table 2 in GB/T 222; however, the upper deviation for the permissible deviation of P content shall be 0.003%; while the upper deviation for the permissible deviation of S content shall be 0.002%.
6.6 Ultrasonic inspection
The steel plate shall be ultrasonically inspected one by one; the inspection method shall be performed as per NB/T 47013.3. The qualification level is Class-I. The probe shall be selected as specified in GB/T 2970.
6.7 Particular requirements
After the consultation between the supplier and the purchaser, and indicated in the contract, other particular requirements can be proposed against the steel plate. 7 Inspection and Test
7.1 The appearance of the steel plate shall be visually examined.
7.2 The dimension and shape of the steel plate shall be measured by appropriate measuring tool.
7.3 The inspection items, specimen quantity, sampling method, test method and sampling direction of each bath steel plates shall conform to the provisions of Table 4. 7.4 Sampling frequency
7.4.1 Sampling frequency of the chemical composition analysis
The smelting analysis of chemical composition shall be carried out by furnace. 7.4.2 Sampling frequency of mechanical and process properties
Each batch shall consist of the same heat-treated mother board. The sample of mechanical property shall be taken from 1/4 width of the steel plate. When the length of the steel plate is equal to or less than 15m, the sample shall be taken from one end of the steel plate; when the length of the steel plate is greater than 15m, the sample shall be taken from both ends of the steel plate.
7.4.3 Through the negotiation between the two parties, the batching rules can be determined otherwise.
Table 4
SN Inspection items
Specimen
qty. (piece) Sampling method
b Test method
Sampling
direction
1 Chemical analysis a
1 (per
furnace) GB/T 20066
GB/T 223,
GB/T 4336,
GB/T
20123
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