Q/BQB 690-2018 English PDF (QBQB690-2018)

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Q/BQB 690-2018: Stainless carbon steel rolled clad plates for pressure vessels
Q/BQB 690-2018
ENTERPRISE STANDARD OF
BAOSHAN IRON and STEEL CO., LTD.
Replacing BZJ 690-2015
Stainless Carbon Steel Rolled Clad 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 Terms and Definitions ... 5 
4 Classification and Code ... 6 
5 Order Content ... 8 
6 Dimensions, Appearance, Weight and Allowable Deviation ... 8 
7 Technical Requirements ... 10 
8 Inspection and Tests ... 13 
9 Numerical Rounding-off ... 16 
10 Packaging, Marking and Quality Certificate ... 16 
Appendix A (informative) Density of Commonly Used Stainless Steel ... 17 
Stainless Carbon Steel Rolled Clad Plates for
Pressure Vessels
1 Scope
This Standard specifies the terms, definitions, classification, code, dimensions,
appearance, weight, technical requirements, inspection and tests, packaging, marking
and quality certificate of stainless carbon steel clad plates, which are manufactured
through rolling method for the purposes of pressure vessels.
This Standard is applicable to clad thick plates, which are manufactured by BAOSHAN
Iron and Steel Co., Ltd., and take stainless steel as the cladding metal, and carbon steel
or low-alloy steel as the base metal, hereinafter referred to as clad plates. This
Standard shall be applied to single-sided, double-sided symmetrical, and asymmetrical
clad thick plates whose stainless-steel cladding thickness is  2 mm. They are for the
purposes of structural components for manufacturing oil, chemical industry, light
industry, sea water desalination and nuclear industry.
2 Normative References
The following documents are indispensable to the application of this Standard. In terms
of references with a specified date, only versions with a specified date are applicable
to this Standard. In terms of references without a specified date, the latest version
(including all the modifications) of is applicable to this Standard.
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room
Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 247 General Rule of Acceptance, Package, Mark and Certification for Steel
Plates (sheets) and Strips
GB/T 709 Dimension, Shape, Weight and Tolerances for Hot-rolled Steel Plates
and Sheets
GB/T 711 Hot-rolled Quality Carbon Structural Steel Plates Sheets and Strips
GB/T 2970 Method for Ultrasonic Testing of Thicker Steel Plates
GB/T 2975-1998 Steel and Steel Products - Location and Preparation of Test
Pieces for Mechanical Testing
GB/T 3274 Hot-rolled Plates and Strips of Carbon Structural Steels and High
Strength Low Alloy Structural Steels
GB/T 4237 Hot Rolled Stainless Steel Plate, Sheet and Strip
GB/T 6396 Clad Steel Plates - Mechanical and Technological Test
GB/T 7734 Method for Ultrasonic Testing of Clad Steel Plates
GB/T 8170 Rules of Rounding off for Numerical Values and Expression and
Judgement of Limiting Values
GB/T 20878 Stainless and Heat-resisting Steels - Designation and Chemical
Composition
NB/T 47013.3-2015 Nondestructive Testing of Pressure Equipment - Part 3:
Ultrasonic Testing
NB/T 47013.5-2015 Nondestructive Testing of Pressure Equipment - Part 5:
Penetrant Testing
3 Terms and Definitions
This Standard adopts the following terms and definitions:
3.1 Stainless-carbon Steel Rolled Clad Plate
Stainless-carbon steel rolled clad plate refers to clad plate, which takes carbon steel
or low-alloy steel as the base metal and adopts the rolling method to integrally and
consecutively clad a certain thickness of stainless steel on its one side, or both sides.
3.2 Base Metal
Base metal refers to the matrix material in clad plate, namely, carbon steel or low-alloy
steel that mainly bears the structural strength.
3.3 Cladding Metal
Cladding metal refers to the cladding material in clad plate, namely, stainless steel that
contacts the working medium, and plays the role of resisting corrosion and
contamination.
3.4 Rolled Compounding Method
Rolled compounding method refers to the method of implementing metallurgical
compound of the base metal and the cladding metal through the rolling process.
3.5 Compound Contact Interface
Clad plate’s product designation is constituted of nameplate, specification, grade code
and standard No. Separator “” may be used to link them up in designation. Or, they
may be separately designated.
4.3.1 Nameplate expression method
In terms of single-sided clad plate, nameplate expression shall be constituted in
accordance with the sequence: “nameplate of cladding metal + nameplate of base
metal”. In terms of double-sided clad plate, nameplate expression shall be constituted
in accordance with the sequence: “nameplate of cladding metal 1 + nameplate of base
metal + nameplate of cladding metal 2”. Generally speaking, the nameplate of stainless
steel shall be replaced by a unified digital code.
4.3.2 Specification expression method
In terms of single-sided clad plate, specification expression shall be constituted in
accordance with the sequence: “(nominal thickness of cladding metal + nominal
thickness of base metal)  nominal width  nominal length”. In terms of double-sided
clad plate, specification expression shall be constituted in accordance with the
sequence “(nominal thickness of cladding metal 1 + nominal thickness of base metal
+ nominal thickness of cladding metal 2)  nominal width  nominal length”. The unit
of the dimensions is mm.
4.3.3 Standard No. expression method
In terms of single-sided clad plate, standard No. expression shall be constituted in
accordance with the sequence “standard No. of clad plate  year (standard No. of
cladding metal + standard No. of base metal)”. In accordance with double-sided clad
plate, standard No. expression shall be constituted in accordance with the sequence
“standard No. of clad plate  year (standard No. of cladding metal 1 + standard No. of
base metal + standard No. of cladding metal 2)”. The content in the brackets may be
omitted.
4.3.4 Examples of designation
Example 1:
Grade-1 single-sided rolled clad plate; ordered in accordance with BZJ 690-2017;
cladding metal: 3 mm thickness, S32168 (standard No.: GB/T 24511) stainless steel;
base metal: 30 mm thickness, Q345B (standard No.: GB/T 3274) steel plate; width:
3,000 mm; length: 10,000 mm may be designated like this:
or
Example 2:
Grade-2 double-sided rolled clad plate; ordered in accordance with BZJ 690-2017;
cladding metal 1 (namely, one side of cladding metal): 3 mm thickness, S32168
(standard No.: GB/T 24511) stainless steel; base metal: 30 mm thickness, Q345B
(standard No.: GB/T 3274) steel plate; cladding metal 2 (namely, the other side of
cladding metal): 2 mm thickness, S30408 (standard No.: GB/T 24511) stainless steel;
width: 3,000 mm; length: 10,000 mm may be designated like this:
or
5 Order Content
Contracts or orders that order products in accordance with this Standard shall include
the following content:
a) Standard No.; standard No. of the cladding metal and the base metal;
b) Name of products;
c) Nameplate of the cladding metal and the base metal;
d) Grade of clad plate;
e) Delivery state;
f) Dimensions and weight;
g) Purposes;
h) Special requirements.
6 Dimensions, Appearance, Weight and Allowable
Deviation...