JB/T 12531-2015Pipe intersecting line cutting machine (English PDF)
圆管相贯线切割机
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
October 10, 2015
Implementation date
March 1, 2016
Scope
JB/T 12531-2015 is the English-translated version of 圆管相贯线切割机.
Machines that cut the intersecting line of pipes are the subject of JB/T 12531-2015. The standard classifies the products and their types and sets the technical requirements, the safety requirements, the test and inspection methods, the inspection and acceptance rules, and the provisions for marking, packaging, quality documentation and storage.
It applies to pipe intersecting line cutting machines that cut by flame or by plasma arc. The Ministry of Industry and Information Technology issued the standard on 10 October 2015 and it became effective on 1 March 2016.
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Document preview — JB/T 12531-2015
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Classification and model
- 4.1 Classification
- 4.2 Model
- 5 Technical requirements
- 5.1 Basic parameters
- 5.2 General technical requirements
- 6 Safety requirements
- 7 Test and inspection methods
- 7.1 Inspection of the appearance
- 7.2 Inspection of the installation accuracy
- 7.3 Inspection of the working accuracy
- 7.4 Inspection of the gas circuit
- 7.5 Electrical inspection
- 7.6 Inspection of the coating
- 8 Inspection and acceptance rules
- 9 Marking, packaging, quality documents and storage
- 9.1 Marking
- 9.2 Packaging
- 9.3 Quality documents
- 9.4 Storage
- Annex A (informative) Round pipe for the standard measurement
- A.1 Accuracy requirements
- A.2 Machining method
- A.3 Graduation requirements
- Figure 1 Longitudinal levelness accuracy of the guideway
- Figure 2 Inspection of the parallelism of the centre line of the round pipe to the longitudinal guideway surface
- Figure 3 Inspection of the amount of creep
- Figure 4 Inspection of the longitudinal sizing accuracy
- Figure 5 Inspection of the angular deviation of the rotary displacement
- Figure 6 Inspection of the angular deviation of the swing of the cutting torch
- Figure 7 Inspection of the position error of the raising and lowering of the cutting torch
- Figure 8 Inspection of the longitudinal back and forth position error
- Figure 9 Inspection of the tracking accuracy of the up and down movement of the cutting torch
3 Terms and definitions
4 Classification and model
5 Technical requirements
6 Safety requirements
7 Test and inspection methods
8 Inspection and acceptance rules
9 Marking, packaging, quality documents and storage
Foreword
This document was issued on 10 October 2015 by the Ministry of Industry and Information Technology of the People's Republic of China, and has been in force since 1 March 2016.
It is the first edition of this standard.
About this edition
JB/T 12531-2015 is the first edition of this standard. It was issued on 10 October 2015 and has been in force since 1 March 2016.
There is no earlier edition to compare it with, so a specification that has to refer to this subject can only cite JB/T 12531-2015 itself.
The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one announced by the Ministry of Industry and Information Technology of the People's Republic of China.
Edition history and citation
JB/T 12531-2015 is a first edition: there is no earlier version of this standard, so a document that needs to refer to this subject can only cite JB/T 12531-2015 itself.
Where an edition is replaced, the Chinese standardization system keeps the number and changes the year: the number identifies the subject, the year identifies the text. That is why a citation without a year is ambiguous and a citation with one is not.
Classification and status
JB/T 12531-2015 carries no ICS number in the official record.
The JB/T prefix marks a recommended standard of China's machinery industry, issued by the Ministry of Industry and Information Technology. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.
How this standard is designated
The full designation is JB/T 12531-2015. A citation should carry the number with its year, because the year identifies the text that applies.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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