GB/T 35425-2017 Classification and coding of bulk materials for highway and bridge construction GB/T35425-2017 Standard compression package decompression password: www.bzxz.net
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ICS35.040
National Standard of the People's Republic of China
GB/T35425—2017
Classification and coding of bulk materials for road and bridge construction2017-12-29Published
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of China
2018-04-01Implementation
Terms and definitions
Classification principles and methods
4 Coding principles and methods
5 Classification coding structure
6 Classification coding table
References·
GB/T35425—2017
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This standard was drafted in accordance with the rules given in GB/T1.1-2009. This standard was proposed and managed by the National Article Coding Standardization Technical Committee (SAC/TC287). GB/T35425-2017
The drafting units of this standard are: China Article Coding Center, China Communications Construction Co., Ltd., China Communications Materials Co., Ltd., China Communications First Navigation Engineering Bureau Co., Ltd., China Communications Second Navigation Engineering Bureau Co., Ltd., China Communications Third Navigation Engineering Bureau Co., Ltd., China Communications Fourth Navigation Engineering Bureau Co., Ltd., China Communications First Highway Engineering Bureau Co., Ltd., China Communications Second Highway Engineering Bureau Co., Ltd., China Communications Fourth Highway Engineering Bureau Co., Ltd., China Communications Road and Bridge Construction Co., Ltd., China Communications Tunnel Engineering Bureau Co., Ltd., Shanghai Zhenhua Heavy Industries (Group) Co., Ltd. The main drafters of this standard are Song Hailiang, Huang Yi, Han Shuwen, Liu Wei, Jiang Fuguo, Huang Shuo, Wu Yongping, Ding Zhenghui, Sun Zhiming, Chen Junfa, Yuan Jitong, Zhu Shuanrang, Zhang Deru, Zhang Lingwen, Zhu Lianqing, Zheng Min, Zhu Pei, Sun Chongguang, He Xiaohong. iKAoNi KAca
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1 Scope
Classification and coding of bulk materials for highway and bridge construction GB/T35425—2017
This standard specifies the classification principles and methods, coding principles and methods, classification and coding structure and coding table of commonly used bulk materials such as steel, cement, asphalt, fuels and lubricants in highway and bridge construction. This standard applies to the classification, coding and information exchange of the above-mentioned commonly used bulk materials. Terms and definitions
The following terms and definitions apply to this document
Linear classification method
Method of linear classification The classification object is divided into several levels according to several selected attributes (or characteristics), and each level is divided into several categories. The categories of the same level in the same branch form a parallel relationship, and the categories of different levels form a subordinate relationship. [GB/T10113-2003, definition 2.1.5] 3 Classification principles and methods
3.1 Classification principles
3.1.1 The scope covered by the categories of the same level does not overlap or repeat each other 3.1.2 According to the selected attributes of the material, it is divided into several corresponding categories with a hierarchical relationship, and a gradually expanded classification system is formed. For example, steel can be classified according to shape, material, and specification, and then expanded layer by layer. 3.1.3 The category name should be selected according to the material name that conforms to national standards or is generally recognized by the industry, such as the standard name of rebar is hot-rolled ribbed steel bar.
3.1.4 Evenly distribute the granularity of the classification system, and materials of the same category are at similar granularity. 3.2 Classification method
Bulk materials for highway and bridge construction refer to materials commonly used in highway and bridge construction that need to be purchased and used in large quantities, such as steel, cement, asphalt, fuels and lubricants, etc. Their classification adopts the line classification method, mainly based on the raw materials, production process, existing form, functional use and attention of materials.
4 Coding principles and methods
4.1 Coding principles
4.1.1 Uniqueness
Each material corresponds to only one code. Even if a certain material is no longer used, its code will be permanently preserved as a unique classification code. 4.1.2 Scalability
There is enough expansion space, and the classification can be expanded according to actual conditions. 1
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GB/T35425—2017
4.1.3 Stability
Once the material code is assigned, it will remain unchanged as long as the basic properties of the material have not changed. 4.2
Coding method
4.2.1 The classification code of bulk materials adopts full digital hierarchical coding. The lower-level class code should inherit the upper-level class code to intuitively reflect the subordinate relationship between the lower-level class and the upper-level class; the same-level classes form a parallel relationship and are encoded with sequential codes. 4.2.2 A four-layer 7-digit full digital code is adopted, the first layer is represented by one Arabic numeral, and the second, third, and fourth layers are represented by two Arabic numerals.
4.2.3 Each level of code is arranged in ascending order, starting from "1\" and arranged in ascending order. The second, third and fourth levels are coded up to "99". 4.2.4 The code with the number "99" in the second, third and fourth levels all represent the accommodation category, that is, the materials that cannot be classified into the series category are all included in this category.
4.2.5 When there is a shortage of digits, 0 is used to fill the digits.
Classification coding structure
The bulk materials used for highway and bridge construction adopt a four-layer 7-digit classification coding structure, as shown in Figure 1. X represents the major category, X, X, represent the medium category, XX represents the minor category, and X.X, represents a sub-category. XXX3XX5XX
Coding structure diagram
6 Classification coding table
The classification codes of bulk materials for highway and bridge construction are shown in Table 1. Table 1 Classification coding table of bulk materials for highway and bridge construction Classification code
1010101
1010102
1010103
1010104
1010105
Hot-rolled ribbed steel bars
Cold-rolled ribbed steel bars
Classification name
Threaded steel bars for prestressed concrete
Epoxy coated steel bars for reinforced concrete
Hot-rolled plain round steel bars||tt| |iiKANiKAca
Classification code
1010106
1010107
1010199
1010201
1010202
1010203
1010204
1010205||tt| |1010299
1010301
1010302
10103 99
1010401
1010402
1010403
1010404
1010405
1010406
1010499
1010501
1010502|| tt||1010503
1010599
1010601
1010602||tt ||Table 1 (continued)
Classification name
Cold-rolled plain round steel bars
Stainless steel bars
Other steel bars
Plain round steel bars for prestressed concrete
Spiral channel steel bars for prestressed concrete
Spiral rib steel bars for prestressed concrete
Ribbed steel bars for prestressed concrete
Prestressed high-strength threaded steel bars
Other steel bars
Hot-rolled round steel
Cold-rolled round steel
Other round steel| |tt||Cold drawn round steel wire
Cold drawn square steel wire
Plain round steel wire for prestressed concrete
Spiral rib steel wire for prestressed concrete
Notched steel wire for prestressed concrete
Hot dip galvanized steel wire for bridge cables
Other steel wires
Steel strand
Steel strand for prestressed concrete
Galvanized steel strand
Stainless steel strand
Other steel strands
Wire rope
Round Stranded steel wire rope
Galvanized round steel wire rope
GB/T35425—2017
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GB/T35425—2017
Classification code
1010603
1010699
1020101
1020102
1020103
1020199
10202 01 | | tt | | 1020202 | tt||1020504
1020599
1020701
1020702||tt ||1020703
Table 1 (continued)
Classification name
Stainless steel wire rope
Other wire ropes
Other wire rods
I-beams
Hot-rolled ordinary I-beams
Hot-rolled light I-beams
Welded I-beams
Other I-beams
H-beams
Hot-rolled H-beams
Welded H-beams
Other H-beams
Hot-rolled split T-beams
Hot-rolled ordinary channel steel
Hot-rolled light channel steel
Cold-bent channel steel
Other channel steel
Hot-rolled equal angle steel
Hot-rolled unequal angle steel
Cold-bent equal angle steel
Cold-bent unequal angle steel
Other angle steel
Hot-rolled round wire rod
Hot-rolled flat steel
Cold-drawn flat steel
Hot-rolled ball flat steel
1020799
1020801|| tt ||1020802 | 1021302
1021399
1021401
1021402
10 21403
1021499
1030101
1030102
1030103Www.bzxZ.net
Classification code
Other flat steel
Hot-rolled square steel
Cold-drawn square steel
Other square steel
Hexagonal steel
Table 1 (continued)
Classification name
Hot-rolled hexagonal steel
Cold-drawn hexagonal steel
Other hexagonal steel||tt| |Octagonal steel
Hot-rolled octagonal steel
Cold-drawn octagonal steel
Other octagonal steel
Hot-rolled L-shaped steel
Hot-rolled C-shaped steel
Hot-rolled steel sheet pile
Cold-bent steel sheet pile
Other steel sheet pile
Crane rail
Other steel rails
Other profiles
Hot-rolled steel flat plate
Hot-rolled steel coil
Cold-rolled steel plate
GB/T35425—2017| | tt | |1030201
1030202
1030203
1030204||t t||1030299
1040101
1040102
1040103
1040104
1040105
1040106
1040107
1040108
1 040109
1040110
1040199
1040201
104 0202
Galvanized steel sheet
Tin-coated steel sheet
Coated steel sheet
Pattern steel sheet
Table 1 (continued)
Classification name
Cold-formed corrugated steel sheet
Structural steel sheet for bridges
Other steel sheets
Hot-rolled steel strip
Cold-rolled steel strip
Galvanized steel strip
Coated steel strip
Other steel strips
Other plates
Welded steel pipe||tt| |Welded steel pipe for low pressure fluid transportation
Galvanized welded steel pipe for low pressure fluid transportation
Straight seam electric welded steel pipe
Stainless steel welded steel pipe
Spiral welded steel pipe
Spiral welded steel pipe for piles
Wire casing
Square welded steel pipe
Rectangular welded steel pipe
Steel corrugated culvert
Other welded steel pipes
Seamless steel pipe
Hot rolled seamless steel pipe
Cold drawn seamless steel pipe
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