Q/BQB 695-2018 English PDF (QBQB695-2018)

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Q/BQB 695-2018: Stainless carbon steel rolled clad plates for pressure vessels
Q/BQB 695-2018
ENTERPRISE STANDARD OF
BAOSHAN IRON and STEEL CO., LTD.
Replacing Q/BQB 695-2016
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 ... 9 
7 Technical Requirements ... 10 
8 Inspection and Tests ... 14 
9 Numerical Rounding-off ... 17 
10 Packaging, Marking and Quality Certificate ... 17 
Appendix A (informative) Density of Commonly Used Stainless Steel ... 19 
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 rolled clad plates for pressure vessels, 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, and with the total
thickness of not less than 8 mm, hereinafter referred to as clad plates. This Standard
shall be applied to stainless-steel cladding metal single-sided and double-sided
symmetrical, and asymmetrical clad thick plates of various types of pressure vessels
and storage tanks in 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) is applicable to this Standard.
GB/T 150.2 Pressure Vessels - Part 2: Materials
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 713 Steel Plates for Boilers and Pressure Vessels
GB/T 3531 Steel Plates for Low Temperature Pressure Vessels
GB/T 2970 Method for Ultrasonic Testing of Thicker Steel Plates
GB/T 2975 Steel and Steel Products - Location and Preparation of Samples and
Test Pieces for Mechanical Testing
GB/T 6396 Clad Steel Plates - Mechanical and Technological Test
GB/T 7734 Method for Ultrasonic Testing of Clad Steel Plates
GB/T 8165-2008 Stainless Steel Clad Plates, Sheets and Strips
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
GB 24511 Stainless Steel Plate, Sheet and Strip for Pressure Equipment
NB/T 47002.1 Explosion Welded Clad Plate for Pressure Vessels - Part 1:
Stainless Steel-steel Clad Plate
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
ASME SA516M Specification for Pressure Vessel Plates, Carbon Steel, for
Moderate and Lower-temperature Service
ASME SA537M Pressure Vessel Plates, Heat-treated, Carbon-Manganese-
Silicon Steel
EN 10028-2 Flat Products Made of Steels for Pressure Purposes - Part 2: Non-
alloy and Alloy Steels with Specified Elevated Temperature Properties
3 Terms and Definitions
This Standard adopts the following terms and definitions:
3.1 Stainless Steel Rolled Clad Plate
Stainless 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
4.3.4 Examples of designation
Example 1:
Grade-1 single-sided rolled clad plate; ordered in accordance with Q/BQB 695-2015;
cladding metal: 3 mm thickness, S30403 (standard No.: GB 24511) stainless steel;
base metal: 30 mm thickness, Q345R (standard No.: GB 713) 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 Q/BQB 695-2015;
cladding metal 1 (namely, one side of cladding metal): 3 mm thickness, S30403
(standard No.: GB 24511) stainless steel; base metal: 30 mm thickness, Q345R
(standard No.: GB 713) steel plate; cladding metal 2 (namely, the other side of cladding
metal): 2 mm thickness, S30403 (standard No.: GB 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;
Deviation Deviation Deviation Deviation Deviation Deviation
-10% of cladding
metal’s nominal
thickness, and not
more than 1.0 mm
Stipulated
in
agreement
It shall comply
with the
stipulations of
corresponding
standards on
base metal
product
It shall comply
with the
stipulations of
corresponding
standards on
base metal
product
Allowable
negative
deviation of
cladding metal
+ allowable
negative
deviation of
base metal
Allowable
positive
deviation of
cladding metal
+ allowable
positive
deviation of
base metal
6.3 Weight
6.3.1 Clad plate shall be delivered in accordance with theoretical weight. The
theoretical weight of clad plate is the sum of nominal theoretical weight of the cladding
metal and the base metal stipulated in corresponding standards.
6.3.2 Please refer to Appendix A (informative) for the density of various nameplates
(unified digital code) of commonly used stainless steel. Other than stainless steel, the
density of carbon steel and low-alloy steel shall adopt 7.85 g/cm3.
NOTE: the density of S30403 stainless steel shall adopt 7.90 g/cm3.
6.4 Other Dimensions, Appearance, Weight and Allowable Deviation
Other dimensions, appearance, weight and allowable deviation of clad plate shall
comply with the stipulations in GB/T 709.
7 Technical Requirements
7.1 Cladding Metal and Base Metal
7.1.1 The standard and nameplate of cladding metal and base metal shall respectively
comply with Table 4 and Table 5.
7.1.2 Through the agreement between the demand-side and the supply-side, except
from standards listed in Table 4 and Table 5, other standards of cladding metal and
base metal may also be adopted.
testing shall comply with the stipulations in Table 6. The result of the penetrant testing
shall comply with the requirements of corresponding grades in NB/T 47013.5.
Table 6
Grade Code Te...