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JB/T 12468-2015Three-roll continuous tube rolling mills (English PDF)

三辊连续轧管机组

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

October 10, 2015

Implementation date

March 1, 2016

Scope

JB/T 12468-2015 is the English-translated version of 三辊连续轧管机组.

Three-roll continuous seamless tube rolling mills are covered by JB/T 12468-2015, a recommended Chinese machinery industry standard.

It gives the terms and definitions, the type and basic parameters, the technical requirements, the inspection and testing, and the provisions on marking, packaging, transport and storage for the rolling mill and the rolling mill unit.

The standard applies to the design, manufacture, assembly and installation of three-roll continuous rolling mills for seamless steel pipe and of three-roll continuous rolling mill units, including their no-load and load testing. It was issued on 10 October 2015 and came into force on 1 March 2016.

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Document preview — JB/T 12468-2015

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

1 Scope
2 Normative references
3 Terms and definitions
4 Model, type and basic parameters
4.1 Model
4.2 Type
4.3 Basic parameters
5 Technical requirements
5.1 General technical requirements
5.2 Technical requirements on the key parts
5.3 Technical requirements on the assembly
5.4 Technical requirements on the painting
5.5 Technical requirements on the hydraulic, lubrication and pneumatic systems
5.6 Technical requirements on the piping
5.7 Technical requirements on the electrical system
5.8 Technical requirements on the appearance
6 Inspection and tests
6.1 General
6.2 Inspection of the appearance
6.3 Inspection of the basic parameters
6.4 Inspection of the assembly accuracy
6.5 No-load test
6.6 Load test
7 Marking, packaging, transport and storage
Figure 1 Basic composition of the equipment of the continuous pipe rolling unit
Figure 2 Hydraulic small chamber cylinder
Figure 3 Roll
Figure 4 Restraining rack
Table 1 Basic parameters

3 Terms and definitions

4 Model, type and basic parameters

5 Technical requirements

6 Inspection and tests

7 Marking, packaging, transport 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 12468-2015 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 12468-2015 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 12468-2015 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 12468-2015 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 12468-2015 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 12468-2015. 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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