9秒发货/有发票 梧三标准英文版 优质技术翻译  数据库收录:159759 最近更新:2020-02-02  
支付宝/对公账号 首页   询价  购买流程  英文样品 公司简介   购物车

GB/T 13788-2017

标准搜索结果: 'GB/T 13788-2017'
标准号码内文价格(元)第2步交付天数标准名称状态
GB/T 13788-2017 英文版 580 购买 现货,9秒内自动发货PDF,有增值税发票。 冷轧带肋钢筋 有效

   
标准详细信息 GB/T 13788-2017; GB/T13788-2017; GBT 13788-2017; GBT13788-2017
中文名称: 冷轧带肋钢筋
英文名称: Cold rolled ribbed steel bars
行业: 国家标准 (推荐)
中标分类: H44
国际标准分类: 77.140.60
字数估计: 11,100
发布日期: 2017-07-12
实施日期: 2018-04-01
旧标准 (被替代): GB/T 13788-2008
引用标准: GB/T 2101; GB/T 2103; GB/T 17505; GB/T 21839; GB/T 28899; GB/T 28900; YB/T 081
起草单位: 中冶建筑研究总院有限公司、安阳合力创科冶金新技术股份有限公司、安徽马钢比亚西钢筋焊网有限公司、天津银龙预应力材料股份有限公司、冶金工业信息标准研究院
归口单位: 全国标准化技术委员会(SAC/TC 183)
提出机构: 中国钢铁工业协会
发布机构: 中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
范围: 本标准规定了冷轧带肋钢筋的术语和定义、分类、牌号、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志和质量证明书。本标准适用于预应力混凝土和普通钢筋混凝土用冷轧带肋钢筋,也适用于制造焊接网用冷轧带肋钢筋(以下简称钢筋)。

GB/T 13788-2017
Cold rolled ribbed steel bars
ICS 77.140.60
H44
中华人民共和国国家标准
代替GB/T 13788-2008
冷轧带肋钢筋
Coldroledribbedsteelbars
2017-07-12发布
2018-04-01实施
中华人民共和国国家质量监督检验检疫总局
中国国家标准化管理委员会发布
前言
本标准按照GB/T 1.1-2009给出的规则起草。
本标准代替GB/T 13788-2008《冷轧带肋钢筋》,与GB/T 13788-2008相比,主要技术变化如下:
---修改了分类及代号的有关规定;
---增加了高延性冷轧带肋钢筋牌号CRB600H、CRB680H和CRB800H;
---增加了四面肋钢筋外形、尺寸和标志图;
---修改了牌号和化学成分的有关规定;
---增加了高延性冷轧带肋钢筋CRB600H、CRB680H和CRB800H的力学性能要求;
---修改了断后延伸率、最大力总延伸率Agt和强屈比的有关规定:
---修改了试验方法的有关规定;
---删除了附录A《钢筋在最大力总伸长率的测定方法》;
---删除了附录B《冷轧带肋钢筋用盘条的参考牌号和化学成分》。
本标准由中国钢铁工业协会提出。
本标准由全国标准化技术委员会(SAC/TC183)归口。
本标准起草单位:中冶建筑研究总院有限公司、安阳合力创科冶金新技术股份有限公司、安徽马钢
比亚西钢筋焊网有限公司、天津银龙预应力材料股份有限公司、冶金工业信息标准研究院。
本标准主要起草人:岳清瑞、冯超、陶然、翟文、郭嗣宏、艾铁岭、李亚杰、张平远、谢志安、刘宝石、
王鲜华、杜瑞青、张莹、王玉婕。
本标准所代替标准的历次版本发布情况为:
---GB 13788-1992、GB 13788-2000、GB/T 13788-2008。
冷轧带肋钢筋
1 范围
本标准规定了冷轧带肋钢筋的术语和定义、分类、牌号、尺寸、外形、重量及允许偏差、技术要求、试
验方法、检验规则、包装、标志和质量证明书。
本标准适用于预应力混凝土和普通钢筋混凝土用冷轧带肋钢筋,也适用于制造焊接网用冷轧带肋
钢筋(以下简称钢筋)。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文
件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 2101 型钢验收、包装、标志及质量证明书的一般规定
GB/T 2103 钢丝验收、包装、标志及质量证明书的一般规定
GB/T 17505 钢及钢产品 交货一般技术要求
GB/T 21839 预应力混凝土用钢材试验方法
GB/T 28899 冷轧带肋钢筋用热轧盘条
GB/T 28900 钢筋混凝土用钢材试验方法
YB/T 081 冶金技术标准的数值修约与检测数值的判定
3 术语和定义
下列术语和定义适用于本文件。
3.1
冷轧带肋钢筋 coldroledribbedsteelbars
热轧圆盘条经冷轧后,在其表面带有沿长度方向均匀分布的横肋的钢筋。
3.2
公称直径 nominaldiameter
相当于横截面积相等的光圆钢筋的公称直径。
3.3
相对投影肋面积 specificprojectedribarea
横肋在与钢筋轴线垂直平面上的投影面积与公称周长和横肋间距的乘积之比。
3.4
横肋间隙 ribspacing
钢筋周圈上横肋不连续部分在垂直于钢筋轴线平面上投影的弦长。
4 分类、牌号
4.1 分类及代号
冷轧带肋钢筋按延性高低分为两类:
冷轧带肋钢筋 CRB
高延性冷轧带肋钢筋 CRB+抗拉强度特征值+H
C、R、B、H分别为冷轧(Coldroled)、带肋(Ribbed)、钢筋(Bar)、高延性(Highelongation)四个词
的英文首位字母。
4.2 牌号
钢筋分为 CRB550、CRB650、CRB800、CRB600H、CRB680H、CRB800H 六个牌号。CRB550、
CRB600H为普通钢筋混凝土用钢筋,CRB650、CRB800、CRB800H为预应力混凝土用钢筋,CRB680H
既可作为普通钢筋混凝土用钢筋,也可作为预应力混凝土用钢筋使用。
5 尺寸、外形、重量及允许偏差
5.1 公称直径范围
CRB550、CRB600H、CRB680H 钢筋的公称直径范围为4 mm~12 mm。CRB650、CRB800、
CRB800H公称直径为4mm、5mm、6mm。
5.2 外形
5.2.1 钢筋表面横肋应符合5.2.1.1~5.2.1.6的规定。
5.2.1.1 二面肋和三面肋钢筋横肋呈月牙形,四面肋横肋的纵截面应为月牙状并且不应与横肋相交。
筋有一面肋的倾角应与另两面反向。四面肋钢筋两相邻面横肋的倾角应与另两面横肋方向相反。
5.2.1.3 二面肋和三面肋钢筋横肋中心线和钢筋纵轴线夹角β为40°~60°。四面肋钢筋横肋轴线与钢
筋轴线的夹角应为40°~70°,对于两排肋之间的角度可以为35°~75°。
5.2.1.4 二面肋和三面肋钢筋横肋两侧面和钢筋表面斜角α不得小于45°,四面肋钢筋横肋两侧面和钢
筋表面斜角α不得小于40°,横肋与钢筋表面呈弧形相交。
5.2.1.5 二面肋和三面肋钢筋横肋间隙的总和应不大于公称周长的20%(∑fi≤0.2πd),四面肋钢筋
横肋间隙的总和应不大于公称周长的25%(∑fi≤0.25πd)。
5.2.1.6 相对肋面积fr按式(1)确定:
fr=
π×d×l
(1)
式中:
K=2、3或4(二面肋、三面肋或四面肋);
FR ---一个肋的纵向截面积,单位为平方毫米(mm2);
β ---横肋与钢筋轴线的夹角,单位为度(°);
d ---钢筋公称直径,单位为毫米(mm);
l ---横肋间距,单位为毫米(mm)。
已知钢筋的几何参数,相对肋面积也可用下面的近似式(2)计算:
d×π-∑fi( )× h+4h1/4( )
6×π×d×l
(2)
式中:
∑fi ---钢筋周圈上各排横肋间隙之和,单位为毫米(mm);
h ---横肋中点高,单位为毫米(mm);
h1/4 ---横肋长度四分之一处高,单位为毫米(mm)。
5.2.2 二面肋钢筋的外形应符合图1和5.2.1的规定。
说明:
β ---横肋与钢筋轴线夹角;
h ---横肋中点高度;
l ---横肋间距;
b ---横肋顶宽;
fi ---横肋间隙。
图1 二面肋钢筋表面及截面形状
5.2.3 三面肋钢筋的外形应符合图2和5.2.1的规定。
说明:
α ---横肋斜角;
h ---横肋中点高度;
l ---横肋间距;
b ---横肋顶宽;
fi---横肋间隙。
图2 三面肋钢筋表面及截面形状
5.2.4 四面肋钢筋的外形应符合图3和5.2.1的规定。
说明:
α---横肋斜角;
β---横肋与钢筋轴线夹角;
l---横肋间距;
b---横肋顶宽;
fi---横肋间隙。
图3 四面肋钢筋表面及截面形状
5.3 尺寸、重量及允许偏差
二面肋和三面肋钢筋的尺寸、重量及允许偏差应符合表1的规定。
四面肋钢筋的尺寸、重量及允许偏差应符合表2的规定。
表1 二面肋和三面肋钢筋的尺寸、重量及允许偏差
公称直径
公称横
截面积
mm2
重量 横肋中点高
理论重量
kg/m
允许偏差
mm
允许偏差
横肋1/4
处高h1/4
mm
横肋顶宽
mm
横肋间距
mm
允许偏
差%
面积fr
不小于
4.5
5.5
6.5
7.5
8.5
9.5
10.5
12.6
15.9
19.6
23.7
28.3
33.2
38.5
44.2
50.3
63.6
70.8
78.5
86.5
95.0
103.8
113.1
0.099
0.125
0.186
0.222
0.261
0.302
0.347
0.395
0.445
0.499
0.556
0.679
0.746
0.815
0.888
±4
0.30
0.32
0.32
0.40
0.46
0.46
0.55
0.55
0.55
0.75
0.75
0.75
0.75
0.95
0.95
+0.10
-0.05
±0.10
0.24
0.26
0.26
0.32
0.37
0.37
0.44
0.44
0.44
0.60
0.60
0.60
0.60
0.76
0.76
0.2d
4.0
4.0
4.0
5.0
5.0
5.0
6.0
6.0
7.0
7.0
7.0
7.0
7.4
7.4
8.4
±15
0.036
0.039
0.039
0.039
0.039
0.045
0.045
0.045
0.045
0.052
0.052
0.052
0.052
0.056
0.056
0.056
注1:横肋l/4处高、横肋顶宽供孔型设计用。
表2 四面肋钢筋的尺寸、重量及允许偏差
公称直径
mm
公称横
截面积
mm2
重量 横肋中点高
理论重量
kg/m
mm
允许偏差
mm
横肋1/4
处高h1/4
mm
横肋顶宽
mm
横肋间距
允许偏
差%
相对肋
面积fr
不小于
6.0
7.0
8.0
9.0
11.0
12.0
28.3
38.5
50.3
63.6
78.5
95.0
113
0.302
0.395
0.499
0.617
0.746
0.888
±4
0.39
0.45
0.59
0.65
0.72
0.78
+0.10
-0.05
±0.10
0.28
0.32
0.41
0.45
0.50
0.54
0.2d
5.0
5.3
5.7
6.1
6.8
7.2
±15
0.039
0.045
0.045
0.052
0.052
0.056
注:横肋l/4处高、横肋顶宽供孔型设计用。
5.4 长度
钢筋通常按盘卷交货,经供需双方协商也可按定尺长度交货。钢筋按定尺交货时,其长度及允许偏
差按供需双方协商确定。
5.5 弯曲度
直条钢筋的每米弯曲度不大于4mm,总弯曲度不大于钢筋全长的0.4%。
5.6 重量
5.6.1 盘卷钢筋的重量不小于100kg。每盘应由一根钢筋组成,CRB650、CRB680H、CRB800、
CRB800H作为预应力混凝土用钢筋使用时,不得有焊接接头。
6 技术要求
6.1 原料
制造钢筋的原料宜符合GB/T 28899的规定,也可采用按其他标准生产的盘条。
6.2 交货状态
钢筋按冷加工状态交货。允许冷轧后进行低温回火处理。
6.3 力学性能和工艺性能
6.3.1 钢筋的力学性能和工艺性能应符合表3的规定。当进行弯曲试验时,受弯曲部位表面不得产生
裂纹。反复弯曲试验的弯曲半径应符合表4的规定。
表3 力学性能和工艺性能
规定塑
性延伸
强度
Rp0.2
MPa
不小于
抗拉
强度
Rm
不小于
Rm/Rp0.2
不小于
断后伸
长率
不小于
最大力总
延伸率
不小于

GB/T 13788-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 44
Replacing GB/T 13788-2008
Cold rolled ribbed steel bars
冷轧带肋钢筋
ISSUED ON. JULY 12, 2017
IMPLEMENTED ON. APRIL 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
How to BUY & immediately GET a full-copy of this standard?
2. Search --> Add to Cart --> Checkout (3-steps);
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3 
1 Scope .. 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Classification and designations ... 6 
5 Size, shape, weight, and allowable deviation .. 6 
6 Technical requirements ... 13 
7 Test methods ... 15 
8 Inspection rules .. 16 
9 Packaging, marking, and quality certificate ... 17 
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 13788-2008 “Cold rolled ribbed steel wires and
bars”. As compared with GB/T 13788-2008, the main technical changes of this
Standard are as follows.
- RIVISE relevant provisions on classification and codes;
- ADD the designations of high-elongation cold rolled ribbed steel bars.
CRB600H, CRB680H, and CRB800H;
- ADD the shape, size and mark diagram of four-sided ribbed steel bars;
- RIVISE relevant provisions on the designation and chemical composition;
- ADD the mechanical property requirement for high-elongation cold rolled
ribbed steel bars CRB600H, CRB680H, and CRB800H;
- RIVISE relevant provisions on percentage elongation after fracture,
percentage total elongation at maximum force (Agt) and tensile-to-yielding
ratio;
- RIVISE relevant provisions on test methods;
- DELETE Appendix A “Determination methods of steel bars at percentage
total elongation at maximum force”;
- DELETE Appendix B “Reference designations and chemical composition
of wire rods for cold rolled ribbed steel bars”.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of China National Standardization
Technology Committee (SAC/TC 183).
Drafting organizations of this Standard. Central Research Institute of Building
and Construction Co., Ltd., Anyang Heli Techtronic Co., Ltd., Anhui BRC & Ma
Steel Weldmesh Co., Ltd., Silvery Dragon Prestressed Materials Co., Ltd.
Tianjin, and China Metallurgical Information and Standardization Institute.
Main drafters of this Standard. Yue Qingrui, Feng Chao, Tao Ran, Zhai Wen,
Guo Sihong, Ai Tieling, Li Yajie, Zhang Pingyuan, Xie Zhian, Liu Baoshi, Wang
Xianhua, Du Ruiqing, Zhang Ying, Wang Yujie.
Cold rolled ribbed steel bars
1 Scope
This Standard specifies the terms and definitions, classification, designation,
size, shape, weight, allowable deviation, technical requirements, test methods,
inspection rules, packaging, marking, and quality certificate of cold rolled ribbed
steel bars.
This Standard is applicable to cold rolled ribbed steel bars for prestressed
concrete and ordinary reinforced concrete, and cold rolled ribbed steel bars
(known as steel bars for short hereinafter) for manufacturing welded mesh.
2 Normative references
The following documents are essential to the application of this document. For
to this document. For the undated references, the latest version (including all
the amendments) are applicable to this document.
GB/T 2101 General requirement of acceptance packaging marking and
certification for section steel
GB/T 2103 General requirements for acceptance, packing, marking and
quality certification of steel wire
GB/T 17505 Steel and steel products General technical delivery
requirements
GB/T 21839 Steel for prestressed concrete - Test methods
GB/T 28900 Test methods of steel for reinforcement of concrete
YB/T 081 Rule for Rounding Off of Numerical Values and Judgement of
Testing Values for Technical Standards of Metallurgy
3 Terms and definitions
The following terms and definitions are applicable to this document.
The range of nominal diameter of CRB550, CRB600H, and CRB680H steel
bars is 4 mm~12 mm. The nominal diameter of CRB650, CRB800, and
CRB800H is 4 mm, 5 mm, and 6 mm.
5.2 Shape
provisions of 5.2.1.1~5.2.1.6.
5.2.1.1 The transverse ribs of two-sided and three-sided ribbed steel bars shall
be crescent. The longitudinal section of transverse ribs of four-sided ribbed
steel bars shall be crescent and shall not intersect with the transverse ribs.
5.2.1.2 Transverse ribs shall be uniformly distributed along the circumferential
ring of the cross section of steel bars. The inclination of one rib of two-sided
ribbed steel bars shall be reversed with the other rib. The inclination of one rib
of three-sided ribbed steel bars shall be reversed with the other two ribs. The
inclination of the two adjacent transverse ribs of four-sided ribbed steel ribs
5.2.1.3 The included angle β between the center line of the transverse rib and
the longitudinal axis of the steel bar of two-sided and three-sided ribbed steel
bars is 40°~60°. The included angle between the axis of the transverse rib and
the axis of the steel bar of four-sided ribbed steel bars shall be 40°~70°; the
angle between the two rows of ribs can be 35°~75°.
5.2.1.4 The bevel angle α between the two sides of the transverse rib and the
surface of the steel bar of two-sided and three-sided ribbed steel bars shall not
be less than 45°. The bevel angle α between the two sides of the transverse rib
and the surface of the steel bar of four-sided ribbed steel bars shall not be less
5.2.1.5 The sum of rib spacing of two-sided and three-sided ribbed steel bars
shall not be greater than 20% of the nominal circumference (∑fi ≤ 0.2πd). The
sum of rib spacing of four-sided ribbed steel bars shall not be greater than 25%
of the nominal circumference (∑fi ≤ 0.25πd).
5.2.1.6 The specific rib area fr shall be determined by the equation (1).
Where.
K=2, 3, or 4 (two-sided ribs, three-sided ribs, or four-sided ribs);
demand parties, it can also be delivered according to a specified length. When
the steel bar is delivered according to a specified length, the length and
supply-demand parties.
5.5 Bending
The bending per meter of straight steel bars shall not be more than 4 mm. The
total bending shall not be greater than 0.4% of the total length of the steel bar.
5.6 Weight
5.6.1 The weight of a coiled steel bar shall not be less than 100 kg. Each coil
shall be made up of a steel bar. When CRB650, CRB680H, CRB800, CRB800H
are used as steel bars for prestressed concrete, there shall be no welded joints.
5.6.2 The straight steel bar, according to the same designation, the same
the bundle shall be determined by consultation between the supply-demand
parties.
6 Technical requirements
6.1 Raw material
The raw material for manufacturing steel bars shall be in accordance with the
provisions of GB/T 28899. The wire rods produced according to other standards
can also be used.
6.2 Delivery state
The steel bar is delivered in cold working state. It is allowed that low
6.3 Mechanical and processing properties
6.3.1 The mechanical and processing properties of steel bars shall conform to
the provisions of Table 3. When carrying out a bending test, there shall be no
crack on the surface of the bent part. The bending radius of repeated bending
test shall conform to the provisions of Table 4.
7.3.2 The sample may be mechanically straightened. But there shall not be any
heat treatment and other cold working.
7.3.3 The initial test force applied to the sample is that, 70% of the nominal
tensile strength of the sample multiplies by the nominal cross-sectional area of
7.3.4 The loading speed is 200 MPa/min±50 MPa/min. The initial load shall be
completed in 3 min~5 min. After holding the load for 2 min, the relaxation value
shall be recorded.
7.3.5 The sample length is not less than 60 times the nominal diameter.
7.3.6 The relaxation rate of 1000 h is allowed to be calculated from the test data
of at least 120 h.
7.4 Size measurement
7.4.1 The height of the transverse rib is the average value of the height of each
column of transverse ribs of the same section. MEASURE the average distance
center distance between the 1st and 11th transverse ribs in the same column
and DIVIDE it by 10, and OBTAIN the average value of distance between
transverse ribs.
7.4.2 The size measurement shall be accurate to 0.02 mm.
7.5 Measurement of weight deviation
When measuring the weight deviation of steel bar, the sample length shall not
be less than 500 mm. Length measurement shall be accurate to 1 mm. Weight
measurement shall be accurate to 1 g. The weight deviation of steel bar (%)
shall be calculated according to the equation (3).
The rounding off and determination for values of the inspection results shall
conform to the provisions of YB/T 081.
8 Inspection rules
8.1 Inspection and acceptance
Weight deviation
Actual weight of sample - (length of sample x theoretical weight)
Length of sample x theoretical weight
The inspection and acceptance of steel bar shall be carried out by the Quality
Supervision Department of the supply party. The demand party shall have the
8.2 Batching rules
The steel bars shall be inspected and accepted in batches. Each batch shall be
made up of the steel bars of the same designation, same shape, same
specification, same production process, and same delivery state. Each batch
shall not be more than 60 t.
8.3 Sampling quantity
The sampling quantity of the inspection of steel bar shall be in accordance with
the provisions of Table 5.
8.4 Rules for re-inspection and determination
provisions of GB/T 17505.
9 Packaging, marking, and quality certificate
9.1 Each coil (bundle) of steel bars shall be tied up evenly for not less than 3
lines. The end socket shall be bent into the coil.
9.2 The steel bar shall be rolled with obvious designation-marks. The distance
between marks is twice that between transverse ribs; one transverse rib within
the distance between marks shall be deleted, as shown in Figure 4. It shall add
a short transverse rib within the third distance between marks to high-
elongation cold rolled ribbed steel bars, as shown in Figure 5. Steel bars can
   
宁德梧三商贸有限公司 | 纳税人识别号:91350900MA32WE2Q2X | 营业执照:营业执照证书
点击联络我们 联系电邮郑文锐销售经理: Sales@gb-gbt.cn | Sales@ChineseStandard.net | 电话郑经理: 18059327808 | 增值税普通发票 / 增值税专用发票样品
对公开户银行:中国建设银行古田支行 | 账户名称:宁德梧三商贸有限公司 | 账号:35050168730700000955 对公银行账号证书
翻译支持:全资母公司新加坡场测亚洲公司(https://www.ChineseStandard.net 卖欧美后再内销)
网站备案许可:闽ICP备19012676号
隐私   ·  优质产品   ·  退款政策   ·  公平交易   ·  关于我们