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GB 21351-2023The norm of energy consumption per unit production of wrought aluminium and aluminium alloys (English PDF)

变形铝及铝合金单位产品能源消耗限额

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Issued by

State Administration for Market Regulation; Standardization Administration of China

Level / Type

National · Mandatory

Issue date

May 23, 2023

Implementation date

June 1, 2024

Scope

GB 21351-2023 is the English-translated version of 变形铝及铝合金单位产品能源消耗限额.

GB 21351-2023 is the Chinese national standard on the norm of energy consumption per unit production of wrought aluminium and aluminium alloys, in the field of energy and heat transfer engineering. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 23 May 2023 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 June 2024. Classification: ICS 27.010, CCS F01. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

Document preview — GB 21351-2023

National Standard of the People's Republic of China

ICS: 27.010
Classification: F01

Issued by: State Administration for Market Regulation; Standardization Administration of China

1 Scope
2 Normative references
3 Terms and definitions
4 Product classification...
5 Levels of norm of energy consumption...
6 Technical requirements...
6.2.2 Strips
6.2.3 Foils
6.3 Extruded materials
6.3.1 Extruded pipes
6.3.2 Extruded bars, plates and wires
6.3.3 Extruded profiles
6.4 Drawn (rolled) pipes, bars, and wire rods
6.4.1 Drawn (rolled) pipes
6.4.2 Drawn (rolled) bars and wires
6.5 Surface-treated pipes, bars and profiles
6.6 Composite profiles
6.7 Forgings
6.7.1 Free forgings
6.7.2 Die forgings
Annex A

1 Scope

This document specifies product classification of wrought aluminium and aluminium alloys, levels of norm of energy consumption per unit production, technical requirements, energy consumption statistical scope and calculation methods. This document is applicable to the calculation and assessment of unit product energy consumption (hereinafter referred to as energy consumption) of manufacturers of wrought aluminium and aluminium alloys for general industrial use, as well as energy consumption control of new projects. This document does not apply to the calculation and assessment of energy consumption of aluminum and aluminum alloy products produced in special fields such as aviation and aerospace, as well as powder metallurgy, injection molding and other special processes.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 2589, General rules for calculation of the comprehensive energy consumption

GB/T 8005.1, Aluminium and aluminium alloy terms and definitions -- Part 1: Product and method of processing and treatment

GB/T 12723, General principles for establishing allowance of energy consumption per unit throughput

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 2589, GB/T 8005.1 and GB/T 12723apply. provisions of Level 2 in Table 5.

6.2.1.2 Cold-rolled plates 6.2.1.2.1 The energy consumption limit value per unit product of cold-rolled plate products of existing enterprises shall comply with the provisions of Level 3 in Table 6. 6.2.1.2.2 The admission value of energy consumption per unit product of cold-rolled plates for newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 6.

6 Technical requirements...

6.2.2 Strips

6.2.2.1 Hot-rolled strips 6.2.2.1.1 The energy consumption limit value per unit product of hot-rolled strips of existing enterprises shall comply with the provisions of Level 3 in Table 7. 6.2.2.1.2 The energy consumption per unit product value of hot-rolled strips for newly built, renovated and expanded enterprises shall comply with the requirements of Level 2 in Table 7.

6.2.2.2 Cold-rolled strips 6.2.2.2.1 The energy consumption limit value per unit product of cold-rolled strips of existing enterprises shall comply with the provisions of Level 3 in Table 8. 6.2.2.2.2 The energy consumption per unit product value of cold-rolled strips for newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 8.

6.2.2.3 Cast-rolled strips 6.2.2.3.1 The energy consumption limit per unit product of cast-rolled strips of existing enterprises shall comply with the requirements of Level 3 in Table 9. 6.2.2.3.2 The admission value of energy consumption per unit product of cast-rolled strips for newly built and renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 9.

6.2.3 Foils

6.2.3.1 The energy consumption limit value per unit product of foils of existing enterprises shall comply with the provisions of Level 3 in Table 10.

6.2.3.2 The admission value of energy consumption per unit product of foils for newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 10.

6.3.1 Extruded pipes

6.3.1.1 Extruded seamless pipes 6.3.1.1.1 The energy consumption limit per unit product of extruded seamless pipes of existing enterprises shall comply with the provisions of Level 3 in Table 11. 6.3.1.1.2 The energy consumption per unit product energy consumption value of extruded seamless pipes for newly built and renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 11.

6.3.1.2 Extruded seam pipes 6.3.1.2.1 The energy consumption limit per unit product of extruded seam pipes of existing enterprises shall comply with the provisions of Level 3 in Table 13. 6.3.1.2.2 The admission value of energy consumption per unit product of extruded seam pipes for newly built and renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 13.

6.3.2 Extruded bars, plates and wires

6.3.2.1 The energy consumption limit value per unit product of extruded bars, plates and wire rods of existing enterprises shall comply with the provisions of Level 3 in Table 12.

6.3.2.2 The energy consumption per unit product admission value for extruded bars, plates and wire rods of newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 12.

6.3.3 Extruded profiles

6.3.3.1 The energy consumption limit value per unit product of extruded profiles of existing enterprises shall comply with the provisions of Level 3 in Table 13.

6.3.3.2 The energy consumption per unit product energy consumption value of extruded profiles for newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 13.

6.4.1 Drawn (rolled) pipes

6.4.1.1 The energy consumption limit per unit product of drawn (rolled) pipes produced by existing enterprises shall comply with the requirements of Level 3 in Table 14.

6.4.1.2 The admission value of energy consumption per unit product for drawn (rolled) pipes in newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 14.

6.4.2 Drawn (rolled) bars and wires

6.4.2.1 The energy consumption limit per unit product of drawn (rolled) bars and wire rods produced by existing enterprises shall comply with the requirements of Level 3 in Table 15.

6.4.2.2 The admission value of energy consumption per unit product of drawn (rolled) bars and wire rods in newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 15.

6.5 Surface-treated pipes, bars and profiles

6.5.1 The energy consumption limit per unit product of surface-treated pipes, bars, and profiles of existing enterprises shall comply with the provisions of Level 3 in Table 16.

6.5.2 The energy consumption per unit product admission value of surface-treated pipes, bars, and profiles of existing enterprises shall comply with the provisions of Level 2 in Table 16.

6.6 Composite profiles

6.6.1 The energy consumption limit value per unit product of composite profiles of existing enterprises shall comply with the provisions of Level 3 in Table 17.

6.6.2 The energy consumption per unit product admission value of composite profiles of existing enterprises shall comply with the provisions of Level 2 in Table 17.

6.7.1 Free forgings

6.7.1.1 The energy consumption limit value per unit product of free forgings of existing enterprises shall comply with the provisions of Level 3 in Table 18.

6.7.1.2 The admission value of energy consumption per unit product of free forgings in newly built and renovated and expanded enterprises shall comply with the requirements of Level 2 in Table 18.

6.7.2 Die forgings

6.7.2.1 The energy consumption limit value per unit product of die forgings of existing enterprises shall comply with the provisions of Level 3 in Table 19.

6.7.2.2 The admission value of energy consumption per unit product of die forgings in newly built, renovated and expanded enterprises shall comply with the provisions of Level 2 in Table 19.

Annex A

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

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GB 12021.2-2025|GB 12021.9-2021|GB 16780-2021|GB 17167-2025|GB 19153-2019

Editions of GB 21351

Edition	Title	Revision	Status
GB 21351-2023	The norm of energy consumption per unit production of wrought aluminium and aluminium alloys	current edition	Current
GB 21351-2014	The norm of energy consumption per unit product of wrought aluminium alloy extruded profiles for architecture	previous edition	Superseded
GB 25326-2010	The norm of energy consumption per unit products of rolled or drawn aluminium and aluminium alloy tubes,bars	merged into this edition	Superseded
GB 26756-2011	The norm of energy consumption per unit products for extruded aluminium and aluminium alloy rods and bars	merged into this edition	Superseded
GB 31339-2014	The norm of energy consumption per unit products of aluminium and aluminium alloy wire stocks and wires	merged into this edition	Superseded

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