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GB/T 8890-2015 English PDF (GBT8890-2015)

GB/T 8890-2015 English PDF (GBT8890-2015)

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GB/T 8890-2015: Seamless copper alloy tube for condenser and heat-exchanger

This Standard specifies the requirements, test methods, inspection rules, marking, package, transportation, storage, order sheet (or contract), and the like contents of seamless copper alloy tube for condenser and heat-exchanger. This Standard is applicable to the seamless copper alloy tubes used by thermal power generation, ship, offshore oil, machinery, chemical and other industrial sectors to manufacture heat-exchanger and condenser.
GB/T 8890-2015
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.150.30
H 62
Replacing GB/T 8890-2007
Seamless Copper Alloy Tube
for Condenser and Heat-Exchanger
ISSUED ON. SEPTEMBER 11, 2015
IMPLEMENTED ON. APRIL 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Requirements ... 6
4 Test Methods ... 12
5 Inspection Rules ... 13
6 Mark, Package, Transportation, Storage and Quality Certificate ... 15 7 Order Sheet (or Contract) Content ... 15
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 8890-2007 Seamless Copper Alloy Tube for Heat- Exchanger; compared with GB/T 8890-2007, this Standard has the major changes as follows.
--- Added alloy code;
--- Modified alloy grade and state as per the new national standard; ?€?
--- Added corresponding provisions of HSn72-1(C44300), BFe10-1.4-1(C70600), BFe30-0.7(C71500) tubes;
--- Deleted specific provisions of HSn70-1B, HSn70-1AB chemical compositions; which are modified into ?€?the chemical compositions of tubes shall conform to the corresponding grade provisions of GB/T 5231?€?;
--- Modified the tube wall-thickness allowable deviation; increased the requirements for the high-precision-level wall-thickness;
--- Modified the tube length allowable deviation;
--- Added ?€?tube outline dimension test method shall be performed as per the provisions of GB/T 26303.1?€?;
--- Added tube pressure test;
--- Increased YS/T 482, YS/T 483 in chemical analysis method;
--- Modified the tensile specimen as per the provisions of GB/T 228.1-2010; --- Added the provisions that ?€?sampling method shall be performed as per the provisions of YS/T 668; while the preparation of mechanical property and technological property specimens shall be performed as per the provisions of YS/T 815?€?.
This Standard was proposed by China Non-Ferrous Metals Industry Association. This Standard shall be under the jurisdiction of National Technical Committee for Standardization of Non-Ferrous Metals (SAC/TC 243).
Drafting organizations of this Standard. Chinaluo Luoyang Copper Co., Ltd., Zhejiang Hailiang Co., Ltd., Jiangyin New Huahong Copper Industry Co., Ltd., Wuxi Longda Copper Industry Co., Ltd., Golden Dragon Precise Copper Tube Group Inc., Jiangsu Cuilong Precision Copper Tube Co., Ltd., and Shandong Hengyuan Copper Co., Ltd. Seamless Copper Alloy Tube
for Condenser and Heat-Exchanger
1 Scope
This Standard specifies the requirements, test methods, inspection rules, marking, package, transportation, storage, order sheet (or contract), and the like contents of seamless copper alloy tube for condenser and heat-exchanger.
This Standard is applicable to the seamless copper alloy tubes used by thermal power generation, ship, offshore oil, machinery, chemical and other industrial sectors to manufacture heat-exchanger and condenser.
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 228.1-2010 Metallic Materials ?€? Tensile Testing ?€? Part 1. Method of Test at Room Temperature
GB/T 241 Metal Materials Tube ?€? Hydrostatic Pressure Test
GB/T 242 Metal Materials Tube ?€? Drift Expanding Test
GB/T 246 Metal Materials Tube ?€? Flattening Test
GB/T 2828.1 Sampling Procedures for Inspection by Attributea ?€? Part 1. Sampling Schemes Indexed By Acceptance Quality Limit (AQL) for Lot-by-Lot Inspection GB/T 5121 (All Parts) Methods for Chemical Analysis of Copper and Copper Alloys GB/T 5231 Designation and Chemical Composition of Wrought Copper and
Copper Alloys
GB/T 5248 Electromagnetic (Eddy-Current) Examination of Copper and Copper Alloy Seamless Tube
GB/T 8888 Wrought Heavy Non-Ferrous Metal Products ?€? Packing, Marking,
Transporting and Storing
GB/T 10567.1 Wrought Copper and Copper Alloys - Detection of Residual Stress - Mercury Nitrate Test
GB/T 10567.2 Wrought Copper and Copper Alloys - Detection of Residual Stress -Ammonia Test
GB/T 18033-2007 Seamless Copper Tubes for Water and Gas
GB/T 26303.1 Measuring Method for Dimensions and Shapes of Wrought Copper and Copper Alloy - Part 1. Tube
YS/T 347 Copper and Copper Alloys ?€? Estimation of Average Grain Size
YS/T 482 Method for Analysis of Copper and Copper Alloys - the Atomic Emission Spectrometry
YS/T 483 Methods for Analysis of Copper and Copper Alloys - X-Ray
Fluorescence Spectrometric (Wavelength Dispersive)
YS/T 668 Sampling Method of Physical and Chemical Testing for Copper and Copper Alloys
YS/T 815 Preparation Method of Test Pieces for Mechanical and Technological Properties of Copper and Copper Alloys
3 Requirements
3.1 Product classification
3.1.1 Grade, state, specification
The grade, state, and specification of tube shall conform to the provisions of Table 1. 4.6 Non-destructive test
4.6.1 The tube eddy current test shall be performed as per the provisions of GB/T 5248 or determined through the negotiation between the supplier and purchaser. 4.6.2 The tube hydrostatic test shall be performed as per the provisions of GB/T 241. 4.6.3 Tube pneumatic test
When taking the pneumatic test, the tube shall be connected with the gas source with pressure, keep the air with certain pressure within the tube; immerse the tube completely into the water, check whether there is bubbles in the tube.
4.7 Grain size
The tube grain size test shall be performed as per the provisions of YS/T 347. 4.8 Surface quality
4.8.1 The tube carbon film test method shall be performed with reference of Appendix A in GB/T 18033-2007.
4.8.2 The other surface quality problems of the tube shall be inspected through the visual observation.
5 Inspection Rules
5.1 Inspection and acceptance
5.1.1 The tube shall be inspected by the supplier?€?s Technical Supervision Department; so that ensure the product quality conform to the provisions of this Standard and the order sheet (or contract); and fill in the quality certificate.
5.1.2 When receiving the product, the purchaser shall re-inspect the product as per the provisions of this Standard and order sheet (or contract); if the re-inspected results is not consistent with the provisions of this Standard or order sheet (or contract), it shall be proposed to the suppler in written form, and solved through the negotiation between the purchaser and supplier. The dispute on the surface quality and dimension deviation shall be proposed within 1 month since receiving the product; other quality disputes shall be proposed within 3 months since receiving the product. If arbitration is required, the sampling for arbitration shall be jointly performed by the supplier and purchaser. 5.2 Batch
The tube shall be proposed for inspection in batch; each batch shall consist of the products with the same grade, the same state and the same specification. Weight per Other surface quality a
Sampling as per the provisions
of GB/T 2828.1; Inspection
Level-II or negotiated between
the purchaser and supplier
3.9 4.8.2
a Acceptance Quality Limit AQL=4.
5.5 Judgment of inspection results
5.5.1 When the chemical composition is disqualified, then such batch of tubes shall be judged disqualified.
5.5.2 When the outline dimension and its allowable deviation and surface quality (excluding carbon film test) of the tube are disqualified, then such piece of tube is judged disqualified. When the number of disqualified tubes per batch exceed the acceptance quality limit, the howl batch of tubes are judged disqualified; or the supplier shall inspect the tubes piece by piece, only the qualified tubes can be delivered. 5.5.3 Where there is specimen disqualified in the mechanical property, technological property, residual stress, grain size and carbon film test; then take double number of specimens form such batch of tubes to perform the re-test (including the disqualified tubes in the previous test); if all tubes are qualified during the re-test period, then the whole batch of tubes are judged qualified. If there is still disqualified specimen in the re-test result, then such batch of tubes are judged disqualified; or supplier shall inspect the tubes piece by piece, only the qualified tubes can be delivered.
5.5.4 When non-destructive test is disqualified, such tube shall be judged disqualified. 6 Mark, Package, Transportation, Storage and Quality
Certificate
The tube mark, package, transportation, storage and quality certificate shall conform to the provisions of GB/T 8888.
7 Order Sheet (or Contract) Content
The contents of ordering sheet (or contract) on purchasing the tubes listed in this Standard shall be as follows.
a) Product name;
b) Grade;
c) State;

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