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

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

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 amp; 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.
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 Testing Range Bonding State
R1
Full-area
Range
Unbounded area is not allowed to exist; percentage of unbounded
area is 0%.
R2
The length of an individual unbounded area shall be not more than
50 mm; the area shall be not more than 2,000 mm2; percentage of
unbounded area shall be not more than 1%.
R3
The length of an individual unbounded area shall be not more than
75 mm; the area shall be not more than 4,500 mm2; percentage of
unbounded area shall be not more than 4%.
7.4 Composition Requirements
Chemical composition of the base metal and the cladding metal shall comply with corresponding stipulations in standards on base metal and cladding metal. NOTE 1: No. 1 modification order of GB 150.2-2011 stipulates that C, P, S of GB/SA516 Gr70 and GB/SA537C1 1 shall comply with relevant requirements of Q345R in GB713.
7.5 Mechanical Properties and Process Performance
7.5.1 Bonding shear strength of the compound contact interface of clad plate shall comply with the stipulations in Table 7. In terms of double-sided clad plate, respectively retain different sides of cladding metal for shear test.
7.5.2 Tensile test result of clad plate shall comply with the stipulations in Table 8. In terms of double-sided clad plate, only one kind of cladding metal is generally retained for tensile test. The cladding metal that needs to be retained shall be indicated by the demand-side in the contract. When the thickness of the base metal is more than 40 mm, or is appointed by the demand-side, tensile test of the base metal shall merely be conducted.
7.5.3 When base metal standard has corresponding requirements of impact test towards the nameplate of base metal, then, clad plate shall receive impact test of the base metal. The test temperature and impact absorption energy shall comply with the stipulations of base metal standard.
NOTE 2: No. 1 modification order of GB 150.2-2011 stipulates that elongation after break A and impact absorption energy KV2 indicators of GB/SA516 Gr70 and
GB/SA537C1 1 shall comply with relevant requirements of Q345R in GB713. 7.6 Bending Properties
7.7 Intergranular Corrosion Test of Cladding Metal
In accordance with the demand-side?€?s demands, and indication in the contract, intergranular corrosion test of cladding metal may be conducted. The test methods and acceptable quality level shall be negotiated between the demand-side and the supply- side.
7.8 Ultrasonic Testing
Except from ultrasonic testing of the bonding state, when the thickness of the base metal or the cladding metal is more than 6 mm, in accordance with the demand-side?€?s demands, and indication in the contract, ultrasonic testing may be conducted per PCS on the base metal or the cladding metal. The method of ultrasonic testing shall comply with the stipulations in GB/T 2970 or NB/T 47013.3. The standards of the testing and the acceptable quality level shall be indicated in the contract.
7.9 Surface Quality
The surface of cladding metal of clad plate shall not manifest defects that are detrimental to the usage, such as: bubbles, scabs, cracks, inclusions and folds. If there are the above-mentioned defects, they are allowed to be eliminated. However, after the elimination, the minimum thickness of the cladding metal shall be guaranteed, otherwise, welding repair shall be conducted. Welding repair shall comply with the stipulations in 7.3.2. The surface quality of the base metal shall comply with the stipulations of standards on base metal products.
8 Inspection and Tests
8.1 Inspection Items
Clad plate?€?s exit-factory inspection items shall be indicated in the contract and comply with the stipulations in Table 10.
batch rules may be otherwise determined.
8.4 When one of the items in the test result does not comply with the standard requirements, re-inspection may be conducted, or, the whole batch may be determined as disqualified.
8.5 Re-inspection
8.5.1 Re-inspection of impact test shall comply with the stipulations of standards on base metal products. In the re-inspection of other items, randomly take a doubled size of samples from the same batch to conduct the re-inspection of the disqualified item. 8.5.2 If the re-inspection result (including all the indicators requested in the test) is qualified, then, the whole batch shall be deemed as qualified. Even if one of the indicators in the re-inspection result (including all the indicators requested in the test) is disqualified, the whole batch shall be deemed as disqualified.
8.5.3 Re-classification and rework
Before or after the re-inspection, disqualified steel plates may receive re-classification and rework. Please see the specific methods as follows:
a) An individual PCS of steel plate which has already received the tests and the test results are disqualified cannot be accepted. However, steel plates which have not received the tests in this batch may be re-submitted per PCS for tests and acceptance check;
b) Disqualified steel plates may receive re-thermal treatment, then, be re- constituted into a group batch and submitted for tests and acceptance check. 9 Numerical Rounding-off
Numerical rounding-off rules shall comply with the stipulations in GB/T 8170. 10 Packaging, Marking and Quality Certificate
10.1 In the packaging of clad plates, the cladding metal surface of clad plates shall receive effective protection, which can prevent the cladding metal surface from being contaminated or scratched. Through the negotiation between the demand-side and the supply side, bare clad plates may also be delivered (in other words, clad plates that are not packaged).
10.2 On the cladding metal surface (when it is doubled-sided cladding metal: on the surface of cladding metal 1) of each PCS of clad plate, certain marks shall be printed or sculptured, such as the supply-side?€?s trademark, standard No., nameplate, dimensions, steel plate No. and weight.

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