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GB 21351-2023: The norm of energy consumption per unit production of wrought aluminium and aluminium alloys
GB 21351-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
CCS F 01
Replacing GB 21351-2014, GB 25326-2010, GB 26756-2011, GB 31339-2014
The norm of energy consumption per unit production of
wrought aluminium and aluminium alloys
ISSUED ON: MAY 23, 2023
IMPLEMENTED ON: JUNE 01, 2024
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Product classification ... 6
5 Levels of norm of energy consumption... 6
6 Technical requirements ... 16
7 Energy consumption statistical scope and calculation methods ... 20
Annex A (normative) Statistical scope of energy consumption of each product ... 23
Annex B (informative) Reference coefficients for conversion to standard coal for
commonly used energy types and energy equivalent reference value of energy-consuming
working fluid ... 26
Annex C (informative) Energy equivalent reference values of commonly used energy-
consuming working fluids ... 28
Bibliography ... 29
The norm of energy consumption per unit production of
wrought aluminium and aluminium alloys
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.
6.2.2 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 Extruded materials
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 Drawn (rolled) pipes, bars, and wire rods
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...