This standard specifies the marking code method and commonly used marking codes for steel products. This standard is applicable to the marking codes for products such as steel wire, steel plate, steel strip, steel section, steel pipe, etc. GB/T 15575-1995 Steel Product Marking Code GB/T15575-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
#Marking Code
Steel Products Slandard Designation
Steel Products Slandard Designation Subject Content and Scope of Application
This standard specifies the marking code method and commonly used marking codes for steel products. This standard is applicable to the marking codes of products such as steel wire, steel plate, steel strip, steel, and steel pipe. 2 Classification
Added T state
Cross-section shape code
2.3 Dimensional accuracy
2.4 Edge state
Surface quality
Surface type
Surface chemical treatment
Softening degree
Hardening degree
Heat treatment
Mechanical properties
Punching properties
Method for indicating steel product marking codes
GB/T15575—1995
3.1 The marking code for steel products is indicated by the combination of the first letter (uppercase) of the English name corresponding to the category name and Arabic numerals. 3.1-1 The marking code for steel products consists of marking codes representing the category and the characteristics. For example: the marking code for trimmed steel strip EC
E represents the category as edge state, and
C represents the characteristic as trimmed edge.
3.1.2 Arabic numerals may be used as marking codes to indicate product characteristics. For example: low cold hardened steel strip is marked with code H1/4. H represents the category of hardening degree;
1/1 represents the characteristic of low cold hardening.
3.1.3 According to custom and commonality, international general marking codes may be used. For example, the marking code of steel plate with ultra-deep drawing performance is TQ.
3.2 Marking codes not specified in this standard may be specified in the above method.
Common marking codes
GB/T15575-1995
Approved by the State Administration of Technical Supervision on June 7, 1995 and implemented on December 1, 1995
Steel products shall be marked with the codes specified in Articles 4.1 to 4.13 of this standard. 4.1 Processing state
Processing state
Hot rolling (including hot expansion, hot extrusion, hot forging)
b Cold rolling (including cold extrusion)
c Cold drawing (pulling)
4.2 Section shape and model
Use the English letter representing the cross-sectional shape characteristics of the product as the marking code. For example: the code for square hollow steel is QHS. If the product has a model, the model should be added after the marking code representing the product shape indication. 4.3 Size accuracy
Dimension accuracy
Ordinary accuracy
Higher accuracy
Higher accuracy
Thickness higher accuracy
Width higher accuracy
Thickness higher accuracy
4.4 Edge state
Edge state
h. No cutting edge
4. 5 Surface quality
Surface quality
a. Ordinary level
b. Higher level
Heart. Advanced
4.6 Surface type
Surface type
Pickling (shot peening)
Hot-dip galvanizing
Electro-galvanizing
Hot-dip tinning
Electro-tinning
Surface chemical treatment
Surface chemical treatment
Passivation (chromic acid)
Zinc alloying
4.8 Softening degree
Softening degree| |tt||4.9 Hardening degree
Hardening degree
Low cold hardening
Semi-cold hardening
4.10 Heat treatment
Heat treatment
Spheroidizing annealing
Bright annealing
Quenching + tempering
Normalizing + tempering
4.11 Mechanical energy release
Mechanical properties
Low strength
Ordinary strength
Higher strength
High strength
Ultra-high strength
4.12 Types of pressure properties
Super pressure properties
Ordinary super pressure
Deep drawing
Ultra-deep drawing
4.13 Applications
General applications
Important applications
Special applications
, other applications||tt| |GB/T15575—1995
For pressure processing
For cutting
For upsetting
For hot processing
GB/T15575—1995
For cold processing
Note: Other uses may refer to a special purpose, with a special code added after "U"Steel Product Code Chinese and English Name Comparison Table Code
GB/T 15575-1995
Appendix A
Reference)
Chinese name
T state (method)
Hot rolling (including hot expansion, hot, hot plating)
Cold rolling (including cold extrusion)
Cold drawing (I)
Small scale accuracy
Ordinary accuracy
Higher accuracy
Higher accuracy
Higher accuracy of thickness
Higher accuracy of width
Higher accuracy of thickness and width
Edge seal state
No edge cutting
Surface quality
Higher level
Surface type
Full English name
Working eandition
bat working
rold working
cold draw
preeision ofdimensione
A class
Bclass
Cclass
B class uf thicknessrness
B cless of width
B cias? o ihic:knea and wridthedge conditiun
Cutt edge
mill edgc
rub edge
warkmenship finishi and appcaranceclass
Lclara
t class
gurlare kind
GB/T15575—1995
Chinese name
Acid (shot peening)
Hot-dip galvanizing
Electroplated galvanizing
Hot-dip tinning
Electroplating pot
Surface chemical treatment
Passivation (chromic acid)
Zinc alloying
Softening degree
Hardening degree
Low cold hardeningbzxz.net
Semi-cold hardening
Full English name
Polish
grinding
hot-dip caching zinc
electroplated plating zinc
hot-dip coating in(Sn)
electroplated plating tin(Sa)treatmert of surface pickledpegsivation
phosphatization
zinc alloying
soft grade
soft half
soft special
hard grade
hard low
hard half
5—1995
GB/T 15575
Chinese name
Heat treatment
Spheroidizing annealing
Light annealing
Normalizing+tempering
Normalizing+tempering
Mechanical properties
Low strength
Ordinary strength
High strength
Ultra-high strength
Pressing properties
Ordinary stamping
Ultra-deep drawing
General purpose
About the old way
English full name
hard special
heat treatment
annealing
globurizing
light annealing
normakizin
tempering
quenching and tempering
norrmalizing and tenpering
wolution treatment
echanicl properties
strength A class
strength B alans
strength C class
strength D class
atrength l class
drawability property
dra wability property A elassdravability property H classdrawability property C classuse
use kind of general
use kind of major
.Code
Additional Notes:
GB/T15575—1995
Chinese Name
Special Purpose
Other Purposes
Pressure Processing
Cutting Processing
A-ring Processing
Hot Processing
Cold Processing
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard is under the jurisdiction of the Information Standards Research Institute of the Ministry of Metallurgical Industry. This standard is drafted by the Information Standards Research Institute of the Ministry of Metallurgical Industry. The main drafters of this standard are Tang Yini, Deng Xian and Feng Wenhua. This standard level mark GB/T15575-19951 English full name
use kind of special
use kind of ather
useforPpressureprocess
use for cutting process
use far foge process
use far hot presses
usefor coldprocess
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