GB/T 51132-2015 English PDF (GBT51132-2015)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 51132-2015
Historical versions: GB/T 51132-2015
Preview True-PDF (Reload/Scroll if blank)

GB/T 51132-2015: Code for construction and quality acceptance of industrial non-ferrous metallic piping engineering
GB/T 51132-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB/T 51132-2015
Code for construction and quality acceptance of industrial
non-ferrous metallic piping engineering
ISSUED ON: SEPTEMBER 30, 2015
IMPLEMENTED ON: JUNE 01, 2016
Issued by: Ministry of Housing and Urban-Rural Development of PRC.
General Administration of Quality Supervision, Inspection and
Quarantine of PRC.
Table of Contents
Foreword ... 6
1 General provisions ... 8
2 Terms ... 8
3 Basic requirements ... 9
4 Inspection and storage of piping components ... 10
4.1 General requirements ... 10
4.2 Pipes inspection ... 11
4.3 Valves inspection ... 11
4.4 Inspection of other piping components ... 13
4.5 Storage and transportation of piping components ... 15
4.6 Quality inspection and acceptance ... 15
5 Pipe processing ... 18
5.1 General requirements ... 18
5.2 Pipe straightening and rounding ... 18
5.3 Pipe cutting and groove processing ... 18
5.4 Bending fabrication ... 19
5.5 Flanging edge of pipe orifice ... 22
5.6 Fabrication of piping support-bracket and hanger ... 23
5.7 Quality inspection and acceptance ... 23
6 Pipe welding ... 25
6.1 General requirements ... 25
6.2 Preparation before welding ... 27
6.3 Welding process ... 28
6.4 Heat treatment after welding ... 31
6.5 Inspection after welding ... 31
6.6 Quality inspection and acceptance ... 32
7 Pipe network installation ... 36
7.1 General requirements ... 36
7.2 Threaded connection ... 37
7.3 Flanged connection ... 37
7.4 Prefabrication of pipes ... 38
7.5 Piping installation ... 39
7.6 Quality inspection and acceptance ... 45
8 Pressure test of pipe network ... 48
8.1 General requirements ... 48
8.2 Hydraulic pressure test ... 49
8.3 Air pressure test ... 51
8.4 Leakage test ... 51
8.5 Quality inspection and acceptance ... 52
9 Blowing and cleaning of pipe network ... 53
9.1 General requirements ... 53
9.2 Water flushing of pipe network ... 54
9.3 Air blowing of pipe network ... 55
9.4 Degreasing of pipe network ... 55
9.5 Chemical cleaning of pipe network ... 56
9.6 Quality inspection and acceptance ... 57
10 Inspection and acceptance of project quality ... 58
Appendix A Inspection records for construction quality of industrial non-ferrous
metallic piping ... 60
Appendix B Form and dimensions for welding groove of industrial non-ferrous metallic
piping ... 71
Appendix C Batch quality inspection and acceptance record ... 78
Appendix D Segments (sub-division) quality inspection and acceptance record ... 79
Appendix E Segments (sub-division) quality control data inspection record ... 80
Explanation of wording in this code ... 81
List of quoted standards ... 82
Code for construction and quality acceptance of industrial
non-ferrous metallic piping engineering
1 General provisions
1.0.1 In order to improve the construction level of industrial non-ferrous metal pipeline
projects, strengthen the quality control and acceptance of the construction process of
industrial non-ferrous metal pipeline projects, ensure the quality of the project, this
Code is hereby formulated.
1.0.2 This Code is applicable to the construction and quality acceptance of industrial
pipeline projects of copper, aluminum, lead, nickel, titanium, zirconium, tantalum,
niobium and their alloys.
1.0.3 This Code does not apply to the construction and quality acceptance of the
following industrial non-ferrous metal pipeline projects:
1 The manufacturer designs complete sets of pipes, that are integrated into the
equipment.
2 Special pipelines for military facilities and nuclear energy devices.
3 Pipes for offshore facilities and underground mines.
1.0.4 The construction and quality acceptance of industrial non-ferrous metal pipeline
projects shall not only comply with this Code, but also comply with the relevant
national standards.
2 Terms
2.0.1 Industry non-ferrous metal pipeline
Process pipes, other auxiliary pipes, pipes serving industrial production, which are are
connected or assembled by non-ferrous metal pipes and other piping components, to
transport process media in production device.
2.0.2 Intergranular corrosion
In some environments, when the dissolution rate of the grain boundaries is greater than
the dissolution rate of the grains themselves, corrosion occurs along the metal grain
boundaries or grain boundaries.
2.0.3 Solution treatment
A heat treatment process, in which the alloy is heated to a high temperature and
maintained at a constant temperature in the single-phase region, so that the excess phase
is fully dissolved into the solid solution and then rapidly cooled, to obtain a
supersaturated solid solution.
2.0.4 Roundness
The ratio -- of the difference between the maximum outer diameter and the minimum
outer diameter on the cross section of the elbow TO the average of the maximum outer
diameter and the minimum outer diameter.
2.0.5 Tack welding
Welding, which is performed to assemble and secure the position of welded joints.
2.0.6 Fixed welding
In the process of pipe welding connection, the welding between the pipe segment to be
installed and the installed and fixed piping joint.
3 Basic requirements
3.0.1 Pipeline projects shall have approved construction program, construction plan,
other technical documents, before construction.
3.0.2 Process handover inspection shall be conducted between pipeline engineering
construction and other related disciplines, meanwhile quality acceptance records shall
be formed.
3.0.3 During the pipeline project construction process, various construction technical
documents, construction records, inspection reports, quality acceptance records, and
other project acceptance work shall be completed.
3.0.4 The quality acceptance of industrial non-ferrous metal pipeline projects can be
divided into item work, segment work (sub-division work).
3.0.5 The non-ferrous metal pipeline project in the same unit project can be divided into
one segment work or several sub-division work.
3.0.6 Item work shall be divided, according to pipeline pressure levels and materials.
3.0.7 The construction of pressure pipeline projects shall comply with the relevant
provisions of the current national standards "Pressure pipe safety technology
supervision regulation for industrial pressure pipe" TSG D0001 and "Pressure piping
code - Industrial piping" GB/T 20801.
3.0.8 The construction and quality acceptance of non-ferrous metal pipeline engineering
parts for equipment, which is designed in complete sets by the manufacturer, supplied
in bulk and required to be assembled on site, shall comply with the technical
requirements of the manufacturer's products and shall not be lower than the provisions
of this Code.
3.0.9 In addition to complying with the provisions of the design documents, the pipeline
insulation work shall also comply with the relevant provisions of the current national
standard "Code for construction of industrial equipment and pipeline insulation
engineering" GB 50126.
4 Inspection and storage of piping components
4.1 General requirements
4.1.1 Piping components shall have product quality certification documents from the
manufacturer; the technical parameters shall meet the requirements of the design
documents.
4.1.2 Before use, the material, specifications, model, quantity, marking of piping
compone...