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[GB/T 30584-2014] Seamless steel pipes for crane jib
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GB 30584-2014
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Basic data | Standard ID | GB 30584-2014 (GB30584-2014) | | Description (Translated English) | [GB/T 30584-2014] Seamless steel pipes for crane jib | | Sector / Industry | National Standard | | Classification of Chinese Standard | H48 | | Classification of International Standard | 77.140.75 | | Word Count Estimation | 10,117 | | Date of Issue | 5/6/2014 | | Date of Implementation | 4/1/2015 | | Quoted Standard | GB/T 222; GB/T 223.3; GB/T 223.5; GB/T 223.11; GB/T 223.12; GB/T 223.13; GB/T 223.14; GB/T 223.18; GB/T 223.19; GB/T 223.23; GB/T 223.25; GB/T 223.26; GB/T 223.37; GB/T 223.40; GB/T 223.53; GB/T 223.54; GB/T 223.58; GB/T 223.59; GB/T 223.60; GB/T 223.61; | | Adopted Standard | JIS G3441-2004, NEQ; EN 10210-1-2006, NEQ; EN 10297-1-20036, NEQ | | Regulation (derived from) | National Standards Bulletin No. 9 2014 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the crane boom seamless steel pipe size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification. This standard applies to crane booms with seamless steel tubes. | GB 30584-2014: [GB/T 30584-2014] Seamless steel pipes for crane jib---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Seamless steel pipes for crane jib
ICS 77.140.75
H48
National Standards of People's Republic of China
Crane jib seamless steel pipe
Issued on. 2014-05-06
2015-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard 5.6, Chapter 6, Chapter 7, Chapter 8, Chapter 9 is mandatory, the rest are recommended.
This standard GB/T 1.1-2009 given rule drafting.
The standard reference JISG3441.2004 "Mechanical Steel Structural steel (in English), EN10210-1.2006" Non-alloy structural
Steel, hot-rolled steel fine grain structural steels - Part 1. Technical delivery conditions "(in English) and EN10297-1.2003" for mechanical and general
Technical delivery conditions for seamless steel engineering purposes - Part 1. Non-alloy and alloy steel tubes "(in English) to develop.
The standard proposed by China Iron and Steel Association.
This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized.
This standard was drafted. Hengyang Valin Steel Tube Co., Ltd., Jiangsu Dart exclusive community New Material Co., Pangang Group Chengdu Steel & Vanadium
Limited.
The main drafters of this standard. Li Hua, Zhao Bin, Wang Wei, Li Qi, Long fame, Yi Liang Gang, Xiaosong Liang, Zhao Haiying, Peng Zhaohui, Wu Hong.
Crane jib seamless steel pipe
1 Scope
This standard specifies the crane boom seamless steel pipe size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking
Chi and quality certificate.
This standard applies to crane booms with seamless steel tubes.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 222 chemical composition of finished steel tolerance
GB/T 223.3 steel and alloy chemical analysis method two antipyrine methane phosphomolybdate gravimetric method for the determination of phosphorus content
GB/T 223.5 steel measuring soluble silicon and total silicon content reduced silicon molybdate salt spectrophotometric method
Determination of GB/T 223.11 steel and alloy chromium content of visual titration or potentiometric titration
GB/T 223.12 Methods for chemical analysis of iron, steel and alloys of sodium carbonate separation - diphenyl hydrazine spectrophotometric determination of chromium content
GB/T 223.13 Methods for chemical analysis of iron, steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content
GB/T 223.14 Methods for chemical analysis of iron, steel and alloys, tantalum reagent extraction and spectrophotometric determination of vanadium content
GB/T 223.18 Methods for chemical analysis of iron, steel and alloy The sodium thiosulfate separation - determination of copper content Iodometry
GB/T 223.19 Methods for chemical analysis of iron, steel and alloy neocuproine - chloroform extraction spectrophotometric determination of copper content
GB/T 223.23 steel and alloy - Determination of nickel content dimethylglyoxime spectrophotometry
Determination of nickel content GB/T 223.25 Methods for chemical analysis of iron, steel and alloy dimethylglyoxime gravimetric method
GB/T 223.26 steel and alloy - Determination of molybdenum content - Thiocyanate spectrophotometric
GB/T 223.37 Methods for chemical analysis of iron, steel and alloy distillation - indophenol blue photometric method for the determination of nitrogen
GB/T 223.40 Determination of steel and alloy niobium content sulphochlorophenol S spectrophotometry
GB/T 223.53 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrophotometric method for determination of copper content
GB/T 223.54 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrophotometric method for determination of nickel content
GB/T 223.58 Methods for chemical analysis of iron, steel and alloys of sodium arsenite - sodium nitrite determination of manganese content titration
GB/T 223.59 Steel and Alloy Determination of phosphorus content by bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometry
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy perchloric acid dehydration gravimetric method for the determination of silicon content
Determination of phosphorus content GB/T 223.61 Methods for chemical analysis of iron, steel and alloy The ammonium phosphomolybdate volumetric method
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy butyl acetate extraction spectrophotometric determination of phosphorus content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy The sodium (potassium) for Determination of amount
GB/T 223.64 steel and alloy manganese content - Flame Atomic Absorption Spectrometry
GB/T 223.67 steel and alloy sulfur content - Methylene blue spectrophotometric method
Determination of sulfur content of potassium iodate titration method after GB/T 223.68 Methods for chemical analysis of iron, steel and alloy tube furnace combustion
GB/T 223.69 after carbon and alloy steel - Determination of the pipe furnace combustion gas volumetric method
After the determination of carbon content - Gravimetric method GB/T 223.71 Methods for chemical analysis of iron, steel and alloy tube furnace combustion
GB/T 223.72 steel and alloy sulfur content - Gravimetric method
Determination of GB/T 223.74 Methods for chemical analysis of iron, steel and alloy non-combined carbon content
RT Test Method. Test Part 1 GB/T 228.1 metallic materials tensile
GB/T 229 metal Charpy pendulum impact test method
GB/T 2102 Acceptance, packing, marking and quality certification
GB/T 2975 Steel and steel products for mechanical testing and sample preparation position
GB/T 4336 carbon steel and low alloy steel spark source atomic emission spectrometry method (conventional method)
GB/T 5777-2008 Seamless Steel ultrasonic testing method
GB/T 7735-2004 steel pipe eddy current testing method
GB/T 12606-1999 pipe magnetic flux leakage inspection method
GB/T 17395 seamless steel pipe size, shape, weight and tolerance
GB/T 20066 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method
GB/T 20123 Steel - Determination of total carbon and sulfur content of the high-frequency induction furnace combustion infrared absorption method (conventional method)
YB/T 4149 casting tube round
YB/T 5221 alloy steel round tube
3 classification code
3.1 seamless steel pipe manufacturing methods fall into two categories by product, category and symbol.
a) hot-rolled (extrusion, expansion) steel WH;
b) cold drawn (rolled) steel WC.
3.2 grade steel by the representative of the crane boom "arm", "frame" Pinyin first in capital letters and the specified minimum yield strength or under the provisions of Plastic
Extensions of the numerical strength of two parts.
For example. BJ450
among them.
BJ --- crane boom "arm", "frame" Pinyin first in capital letters;
450 --- specified yield strength or proof strength of a predetermined value at a minimum, in megapascals (MPa).
4 ordering content
Pipe ordered under this standard contract or order should include the following.
a) the standard number;
b) the product name;
c) steel grades;
d) Order number (total weight or length);
e) Dimensions (diameter × wall thickness);
f) Special requirements.
5 size, shape and weight
5.1 diameter and wall thickness
5.1.1 pipe nominal diameter (D) and the nominal wall thickness (S) shall comply with GB/T 17395 of.
5.1.2 According to the requirements, negotiated by both sides, we can supply other outer diameter and wall thickness of the pipe.
5.2 diameter and wall thickness of tolerance
5.2.1 pipe diameter and wall thickness tolerances shall comply with the provisions in Table 1.
Table 1 pipe diameter and wall thickness tolerances in millimeters
Category Code Category steel pipe size tolerance
WH hot-rolled (extrusion, expansion) steel
The outer diameter (D) ± 1% D or ± 0.40, whichever is greater
Wall thickness (S) 12.5% S-10% S
WC cold drawn (rolled) steel pipe
The outer diameter (D) ± 1% D or ± 0.30, whichever is greater
Wall thickness (S) ± 10% S
5.2.2 According to the requirements, negotiated by both sides, and in the contract, can supply Dimensions outside predetermined tolerances of the pipe.
5.3 length
5.3.1 usual length
Hot-rolled (extrusion, expansion) steel pipe is usually a length of 3000mm ~ 12000mm; cold drawn (rolled) steel pipe is generally the length of 2000mm ~
12000mm.
5.3.2 cut length and double length
According to the requirements, and indicate in the contract, the steel pipe can be cut to length or double length delivery. Pipe cut-length and double length should be the total length
In the usual length range, steel cut length tolerances shall comply with the following provisions.
a) Length ≤6000mm, 100mm
b) length > 6000mm, 150mm
The total length of pipe double length tolerance is 200mm
Each double length should be cut leaving a margin as specified below.
When a) D≤159mm, cut the balance of 5mm ~ 10mm;
b) D > When 159mm, the cut remainder of 10mm ~ 15mm.
5.3.3 Range Length
Range of pipe length should be within the usual length.
5.4 curvature
Pipe bending per meter should be less than 1.5mm; total length of pipe curvature should not exceed 0.10% of the pipe length, and shall not exceed
10mm.
According to the requirements, negotiated by both sides, and specified in the contract, it can supply additional requirement of bending steel.
5.5 roundness and uneven thickness
According to the requirements, negotiated by both sides, and specified in the contract, roundness and wall thickness of the pipe shall not exceed the outer diameter, respectively, and no
80% of the wall thickness tolerance.
5.6 tip shape
5.6.1 nominal outside diameter of not more than 60mm of steel pipe, the pipe end bevelling should not exceed 1.5mm; nominal pipe diameter greater than 60mm, the pipe end
Oblique cut should not exceed 2.5% of nominal pipe diameter, and the maximum should not exceed 6mm.
5.6.2 pipe ends cut burr should be removed.
5.7 wt.
5.7.1 steel pipe according to the actual weight of the delivery, the delivery also by theoretical weight. Steel pipe theoretical weight calculated according to the provisions of GB/T 17395 and steel
Take the density 7.85kg/dm3.
5.7.2 According to the requirements, negotiated by both sides, and in the contract, the actual weight and deviation from the theoretical weight delivery pipe should break
Together the following provisions.
a) single pipe. ± 10%;
b) a minimum of 10t each batch of steel pipe. ± 7.5%.
6 Technical Requirements
Grades and chemical composition of the steel 6.1
6.1.1 Steel grades and chemical composition (melting analysis) should meet the requirements of Table 2.
6.1.2 When the demand side do product analysis, should be specified in the contract, the chemical composition of finished steel allowable deviation should be consistent with GB/T 222's
Provisions.
6.1.3 According to the requirements, agreed between produce other grades of steel.
Table 2 Grades and chemical composition of the steel
No. Grade
Chemical composition (mass fraction) /%
C Si Mn PSWV Alt Cr Mo Ni Nb Cu Ti
1 BJ450
0.22
0.50
1.80
0.025
0.015
- 0.08
~ 0.20
0.015
~ 0.060
0.30
0.20
0.80
0.11
0.35
0.20
2 BJ770
0.18
0.50
1.80
0.025
0.015
0.80
0.03
~ 0.15
0.015
~ 0.060
0.80
0.50
0.80
0.11
0.35
0.20
3 BJ890
0.19
0.50
1.80
0.025
0.015
0.90
0.03
~ 0.15
0.015
~ 0.060
1.00
0.80
1.50
0.11
0.35
0.20
6.2 Manufacturing Methods
6.2.1 steel smelting method
Outside the electric arc furnace steel should be used by the Canadian refining and vacuum refining outside, or oxygen converter plus refining and vacuum refining. Association by both sides
Business, and noted in the contract, use other methods of smelting high requirements. When the demand side to specify a particular method of smelting, should be specified in the contract.
6.2.2 The method of manufacturing a tube
Tube should be casting, molding or hot-rolled (forged) methods.
Casting tube shall comply with YB/T 4149, and may also be approved by the relevant parties of other higher quality requirements. Hot rolling (forging) tube
Blank should comply with YB/T 5221 requirements.
6.2.3 The method of manufacturing a steel pipe
Hot-rolled steel should be used (extrusion, expansion) or cold drawn (rolled) seamless method of manufacture. When you specify a certain demand-side manufacturing method should be in the contract
Noted.
6.3 Delivery Status
6.3.1 BJ450 grades of steel should be quenched and tempered or normalized condition delivery, when steel finish rolling temperature phase transition critical temperature Ar3 or more, and
The tube is through air-cooled, it shall be considered after the pipe is normalizing.
6.3.2 BJ770, BJ890 grades of steel should be quenched state of delivery.
6.4 Mechanical Properties
6.4.1 Tensile Properties
6.4.1.1 room temperature tensile properties of the delivery status of the tubes shall conform to Table 3.
6.4.1.2 outside diameter less than 219mm of steel pipe, longitudinal tensile test shall be sampled along the pipe.
Pipe outside diameter less than 219mm, when the pipe size permits, transverse tensile test shall be taken along the pipe diameter 10mm round
Shaped cross-section sample interview; when the pipe size is not sufficient to intercept 10mm specimens should be used for a possible larger diameter 8mm or 5mm in
Size cylindrical test pieces; when the pipe size is not sufficient to intercept 5mm specimens, tensile test sample should be longitudinal along the pipe. Circular transverse cross
Samples shall be taken without a flattened cross-sectional sample.
Table 3 Mechanical properties of the steel pipe
No. Grade
Tensile properties of a
-20 ℃ impact absorption energy
KV2/J
Lower yield strength or regulations
Proof strength
ReL/Rp0.2/MPa
tensile strength
Rm/MPa
Wall thickness/mm wall thickness/mm
The Elongation
A /%
Portrait Landscape
Wall thickness/mm
≤20 > 20 ~ 40
not less than
≤20 > 20 ~ 40
Portrait Landscape ≤20
> 20
To 40
≤20
> 20
To 40
Not less than not less than
1 BJ450 450 430 600 ~ 750 560 ~ 710 19 17 27 27 - -
2 BJ770 770 700 820 ~ 1000770 ~ 950 15 13 55 45 35 30
3 BJ890 890 850 960 ~ 1110920 ~ 1070 14 12 55 45 35 30
When a wall thickness of not less than when 40mm, the tensile properties of steel is determined by the supply and demand sides negotiated.
6.4.2 Impact Performance
6.4.2.1 outside diameter less than 76mm and a wall thickness not less than 6.5mm steel should be -20 ℃ Charpy V-notch impact tests, a full-size
Impact energy absorbing sample shall conform to Table 3.
6.4.2.2 outside diameter less than 219mm of steel pipe, steel pipe impact test along the longitudinal or transverse sampling; as no special provisions in the contract, arbitration samples
It should be taken along the longitudinal pipe.
An outer diameter of not less than 219mm of steel pipe, steel pipe along the lateral impact test shall be sampled.
Whether longitudinal or transverse interception interception along the pipe along the pipe, the impact of the sample width should be 10mm, 7.5mm 5mm or possible
The larger size. When the pipe size is not sufficient to intercept 10mm × 5mm specimens, impact test is not required.
6.4.2.3 When the small size of longitudinal impact test specimens, the minimum sample size small impact absorbing energy demand value should be full-size specimen requirements
Table 4 value is multiplied by the coefficient decreasing.
Table 4 small sample size and impact absorption energy coefficient decreasing
Sample size Sample size (height × width)/(mm × mm) decreasing coefficient
Standard sample 10 × 10 1.00
Small specimens 10 × 7.5 0.75
Small specimens 10 × 5 0.50
6.4.2.4 According to the requirements, negotiated by both sides, and in the contract, do the Charpy V-notch impact test at other temperatures
Test, test temperature and impact energy absorption is determined by the supply and demand sides negotiated.
6.5 surface quality
Inner and outer surfaces of the pipe does not allow cracks, folded, rolled off, separation and scarring. These defects should be completely removed, clean up at the actual wall thickness
It should not be less than the minimum wall thickness allowed.
Deeper than the thickness of negative deviation of the other local defects are allowed.
6.6 Non-destructive testing
6.6.1 pipe shall be full-length by the root ultrasonic flaw detection or eddy current testing or magnetic flux leakage inspection test.
6.6.2 When the pipe ultrasonic flaw detection, contrast sample tube longitudinal notch depth should be consistent with GB/T 5777-2008 in the acceptance level L3
Provisions.
When the steel S/D > 0.2 when, unless otherwise specified in the contract, according to the depth of the pipe wall artificial defects GB/T 5777-2008 Appendix C
The provisions C.1.
6.6.3 When the steel pipe eddy current inspection, the comparison sample tube artificial defects shall comply with GB/T 7735-2004 in the acceptance level B.
6.6.4 When the steel pipe magnetic flux leakage inspection, the comparison sample tube outer surface longitudinal artificial defects should be consistent GB/T 12606-1999 in acceptance level
L3 provisions.
6.6.5 According to the requirements, negotiated by both sides, and in the contract, the steel pipe can be said test Inspection of two or more
Testing on the test; also negotiated other more stringent acceptance levels.
6.6.6 When the steel pipe eddy current or magnetic flux leakage inspection, each pipe end remanence should not exceed 20Gs.
7 Test methods
7.1 pipe size and shape should meet the accuracy requirements of the measuring gage by root.
7.2 inner and outer surfaces of the tubes shall visually inspected by the root under sufficient lighting conditions.
7.3 Each work shift per 4h selected at least one pipe, with a gauss meter or other types of instruments calibrated its two ends remanence test.
7.4 Number of test samples of other steel items, sampling methods and test methods shall be in accordance with Table 5.
5 Number of sampling pipe, sampling methods and test methods table
Test item number number of samples Sampling Methods Test Method
A chemical composition of each heat takes a sample GB/T 20066
GB/T 223, GB/T 4336,
GB/T 20123
2 depicting a tensile test each batch of samples GB/T 2975,6.4.1.2 GB/T 228.1 on the two tubes
3 impact test each batch of samples from each of a group of 3 GB/T 2975,6.4.2.2 GB/T 229 in the two tubes
4 eddy current testing by the root - GB/T 7735
5 magnetic flux leakage inspection by the root - GB/T 12606
6 ultrasonic flaw detection by the root - GB/T 5777-2008
7 remanence test 7.3 7.3 7.3
8 Inspection Rules
8.1 inspection and acceptance
Pipe inspection and acceptance carried out by the supplier quality and technical supervision departments.
8.2 Batch rules
According to the chemical composition of the steel pipe furnace inspection and acceptance test items remaining batches pipe inspection and acceptance. Each batch should be the same brand,
The same heat, the same size and the same steel heat treatment system (heats) of the composition. If the pipe is no longer a single cut after heat treatment, it is a
All rolled steel pipe root tube should be considered an interception. The number of each batch of steel should not exceed the following provisions.
a) D≤76mm, and S≤3.0mm. 400 gen;
b) D > 351mm. 50 gen;
c) Other sizes.200.
8.3 The number of samples and sampling site
Each batch of test samples of the steel pipe and the number of sampling sites should comply with Table 5.
8.4 reinspection and decision rules
Pipe reinspection shall comply with judgment rules GB/T 2102's.
9 packaging, marking and quality certification
Steel packaging, marking and quality certificate shall comply with GB/T 2102's.
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GB 30584-2014: [GB/T 30584-2014] Seamless steel pipes for crane jib
Status: Valid
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