GB/T 17396-2022 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 17396-2022 | English | 170 |
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Seamless hot-rolled steel tubes for hydraulic pillar service
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| GB/T 17396-2009 | English | 70 |
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Hot-rolled seamless steel tubes for hydraulic pillar service
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| GB/T 17396-1998 | English | 359 |
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Seamless hot-rolled steel tubes for hydraulic pillar service
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GB/T 17396-2022: Seamless hot-rolled steel tubes for hydraulic pillar service---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT17396-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
CCS H 48
Replacing GB/T 17396-2009
Seamless hot-rolled steel tubes for hydraulic pillar service
Issued on. OCTOBER 12, 2022
Implemented on. MAY 01, 2023
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... 7
4 Order content... 7
5 Size, shape, weight and allowable deviation... 8
6 Technical requirements... 10
7 Test methods... 14
8 Inspection rules... 15
9 Packaging, marking and quality certificate... 16
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020,
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
This document replaces GB/T 17396-2009 Hot-rolled seamless steel tubes for
hydraulic pillar service; compared with GB/T 17396-2009, in addition to structural
adjustments and editorial changes, the main technical changes are as follows.
a) Change the allowable deviation of outer diameter and wall thickness (see 5.2; 4.2
of the 2009 edition);
b) Change the usual length requirements (see 5.4.1; 4.4.1 of the 2009 edition);
c) Change the allowable deviation requirements for specific length and multiple
length (see 5.4.2.2; 4.4.2 of the 2009 edition);
d) Change the requirements for the curvature in total length (see 5.5.2; 4.5.2 of the
2009 edition);
e) Change the weight requirements (see 5.8; 4.7 of the 2009 edition);
f) Delete the designation 20, add the designations 27SiMnRE, 30CrMnSi, 30CrMo
(see Table 2; Table 2 of the 2009 edition);
g) Change the P and S composition requirements of all designations, and change the
rare earth content requirements of 30MnNbRE (see Table 2; Table 2 of the 2009
edition);
h) Change the smelting method of steel (see 6.2.1; 5.2.1 of the 2009 edition);
i) Add the manufacturing method of the tube blank (see 6.2.2);
j) Add the mechanical property requirements for the designations 27SiMnRE,
30CrMnSi, and 30CrMo (see 6.4);
k) Delete the requirements on the reduction of area in the mechanical properties (see
Table 3 of the 2009 edition);
l) Change the impact requirements (see 6.4.3; 5.4.4 of the 2009 edition);
m) Change the inspection requirements for non-metallic inclusions (see 6.6; 5.6 of
the 2009 edition);
n) Add non-destructive testing requirements (see 6.8);
o) Change the batching rules (see 8.2.3; 7.2.3 of the 2009 edition).
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying patents.
This document was proposed by China Iron and Steel Industry Association.
This document shall be under the jurisdiction of National Technical Committee 183 on
Iron and Steel of Standardization Administration of China (SAC/TC 183).
Drafting organizations of this document. Linzhou Fengbao Pipe Co., Ltd., Hunan Valin
Hengyang Steel Tube (Group) Co., Ltd., Zhejiang Pacific Seamless Steel Tube Co., Ltd.,
Inner Mongolia BaoTou Steel Union Co., Ltd., Zhengzhou Coal Mining Machinery
Group Co., Ltd., Changsha Dalishen Hydraulic Engineering Co., Ltd., Shandong
Huitong Steel Tube Manufacturing Co., Ltd., Jiangyin Huarun Steel Co., Ltd., China
Metallurgical Information and Standardization Institute.
Chief drafting staffs of this document. Li Jingmin, Xiao Yongzhong, Song Guangxin,
Liu Hong, Mi Yongfeng, Guo Yukun, Jiang Hongwei, Liu Lianhui, Gu Yuping, Li Qi,
Xiang Peng, Zhou Yong, Bai Binheng, Zhu Hongbo, Wang Wenqiang, Wang Shiming,
Xue Jianzhong.
This document was published in 1998 for the first time, and revised in 2009 for the first
time; this is the second revision.
Seamless hot-rolled steel tubes for hydraulic pillar service
1 Scope
This document specifies the order content, size, shape, weight and allowable deviation,
technical requirements, test methods, inspection rules, packaging, marking and quality
certificates of seamless hot-rolled steel tubes for hydraulic pillar service.
This document applies to the seamless hot-rolled steel tubes for cylinders and pillars
used in the manufacture of coal mine hydraulic support cylinders and pillars. It also
applies, as a reference, to seamless hot-rolled steel tubes for other hydraulic cylinders
and pillars.
2 Normative references
The following documents are normatively referenced in this document and are
indispensable for its application. For dated references, only the version corresponding
to that date is applicable to this document; for undated references, the latest version
(including all amendments) is applicable to this document.
GB/T 222, Permissible tolerances for chemical composition of steel products
GB/T 223.5, Steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method
GB/T 223.11, Iron, steel and alloy - Determination of chromium content - Visual
titration or potentiometric titration method
GB/T 223.12, Methods for chemical analysis of iron, steel and alloy - The sodium
carbonate separation-diphenyl carbazide photometric method for the determination
of chromium content
GB/T 223.19, Methods for chemical analysis of iron, steel and alloy - The
neocuproine-chloroform extraction photometric method for the determination of
copper content
GB/T 223.23, Iron, steel and alloy - Determination of nickel content - The
dimethylglyoxime spectrophotometric method
3 Terms and definitions
Terms and definitions determined by GB/T 30062 are applicable to this document.
4 Order content
A contract or order for ordering steel tubes under this document shall include, but not
be limited to, the following.
5 Size, shape, weight and allowable deviation
5.1 Outer diameter and wall thickness
The nominal outer diameter (D) and nominal wall thickness (S) of the steel tube shall
comply with the provisions of GB/T 17395.According to the requirements of the buyer
and after negotiation between the supplier and the buyer, steel tubes of other outer
diameters and wall thicknesses can be supplied.
5.3 Inner diameter and wall thickness
As required by the buyer, after it is negotiated between the supplier and the buyer, and
indicated in the contract, steel tubes can be supplied according to the inner diameter
and wall thickness, where the allowable deviation shall be determined by the supplier
and the buyer through negotiation.
5.4 Length
5.4.1 Normal length
The normal length of the steel tube is 3 000 mm ~ 12 000 mm. According to the
requirements of the buyer and after negotiation between the supplier and the buyer, steel
tubes of a length other than the normal length can be supplied.
5.4.2 Specific length and multiple length
5.5 Curvature
The curvature per meter of the steel tube shall not be greater than the following.
5.5.2 The full-length curvature of the steel tube shall not exceed 0.10% of the length of
the steel tube.
5.6 Out-of-roundness and wall unevenness
As required by the buyer, after it is negotiated between the supplier and the buyer and
indicated in the contract, the out-of-roundness and wall unevenness of the steel tube
shall not exceed 80% of the outer diameter tolerance and wall thickness tolerance
respectively.
5.7 End shape
The end faces of the steel tube shall be perpendicular to the axis of the steel tube; the
burrs of the cut shall be removed.
5.8 Weight
6 Technical requirements
6.1 Steel designation and chemical composition
6.1.1 The steel designation and chemical composition (melting analysis) shall comply
with the requirements in Table 2.As required by the buyer, after it is negotiated between
the supplier and the buyer, and indicated in the contract, steel tubes of other designations
can be supplied.
6.2 Manufacturing method
6.2.1 Smelting method of steels
Steels shall be smelted by the method of electric arc furnace plus out-of-furnace refining
or oxygen converter plus out-of-furnace refining. After negotiation between the supplier
and the buyer, other methods of higher requirements can be used for smelting.
6.3 Delivery state
Steel tubes shall be delivered in hot rolled state. As required by the buyer, after it is
negotiated between the supplier and the buyer and specified in the contract, the steel
tubes can be delivered in the annealed or quenched and tempered state.
6.4 Mechanical properties
6.4.1 Tensile
6.4.3 Shock
6.4.3.1 For structural alloy steel tubes, when the outer diameter is not less than 70 mm
and the wall thickness is not less than 6.5 mm, a longitudinal impact test at room
temperature shall be carried out, and the Charpy V-notch impact absorbed energy of the
test sample made of the sample blank after heat treatment shall meet the requirements
in Table 3.
6.4.3.3 As required by the buyer, after it is negotiated between the supplier and the
buyer and specified in the contract, steel tubes of other designations can be subjected
to the Charpy V (U) notch impact test, and the test temperature and impact absorbed
energy shall be determined through negotiation between the supplier and the buyer.
6.5 Macro-structure
Steel tubes directly rolled from steel ingots shall be inspected for macro-structure
defects. There shall be no visible white spots, inclusions, subcutaneous bubbles, skull
patch and delamination on the cross-sectional acid-leached macro-structure test pieces
of steel tubes.
6.7 Surface quality
There shall be no laps, rolling wrinkles, scrabs and abscission layers on the inner and
outer surfaces of steel tubes. These defects shall be completely removed; the removal
depth shall not exceed the lower deviation of the nominal wall thickness, and the actual
outer diameter and wall thickness of the cleaned place shall not be less than the
minimum value allowed by the outer diameter and wall thickness. Other local
imperfections that do not exceed the allowable lower deviation of wall thickness are
allowed to exist.
6.8 Non-destructive testing
As required by the buyer, after it is negotiated between the supplier and the buyer and
specified in the contract, the steel tube can be non-destructively tested in one or more
of the following methods.
7 Test methods
7.1 Sampling for chemical composition analysis of steel tubes shall comply with the
rules of GB/T 20066.The chemical composition analysis usually complies with the
provisions of GB/T 4336, GB/T 20123 or other general methods, and the arbitration
shall comply with GB/T 223.5, GB/T 223.11, GB/T 223.12, GB/T 223.19, GB/T 223.23,
GB/T 223.26, GB/T 223.40, GB/T 223.49, GB/T 223.59, GB/T 223.63, GB/T 223.85
and GB/T 223.86.
7.2 The size and shape of the steel tubes shall be measured one by one by gauges that
meet the accuracy requirements.
7.3 The inner and outer surfaces of steel tubes shall be inspected visually under full
lighting conditions.
8 Inspection rules
8.1 Inspection and acceptance
The inspection and acceptance of steel tubes shall be carried out by the supplier’s
quality and technical supervision department.
8.2 Batch rules
8.2.1 Steel tubes shall be inspected and accepted in batches.
8.3 Sampling quantity
The sampling quantity for each inspection of each batch of steel tubs shall meet the
requirements of Table 6.
8.4 Re-inspection and determination rules
The re-inspection and determination rules of steel tubes shall comply with the
provisions of GB/T 2102.
9 Packaging, marking and quality certificate
The packaging, marking and quality certificate of steel tubes shall comply with the
provisions of GB/T 2102.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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