GB/T 13793-2008 English PDF (GBT13793-2008)

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GB/T 13793-2008: Steel pipes with a longitudinal electric (resistance) weld
GB/T 13793-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H 48
Replacing GB/T 13793-1992
Steel pipes with a Longitudinal Electric
(Resistance) Weld
ISSUED ON. MAY 13, 2008
IMPLEMENTED ON. NOVEMBER 1, 2008
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
1 Scope ... 5 
2 Normative References ... 5 
3 Classification and Code Name ... 8 
4 Contents of Ordering ... 9 
5 Dimension, Shape, Weight and Permissible Deviation ... 9 
5.1 Outer-diameter and wall thickness ... 10 
5.2 Length ... 11 
5.3 Curvature ... 11 
5.4 Out-of-roundness ... 12 
5.5 End surface of steel pipe ... 12 
5.6 Weld-seam height of steel pipe ... 13 
5.7 Weight ... 13 
6 Technical Requirements ... 14 
6.1 Steel designation and chemical composition ... 14 
6.2 Manufacturing method ... 15 
6.3 Condition of delivery ... 15 
6.4 Mechanical property ... 15 
6.5 Processing property ... 16 
6.6 Hydraulic test ... 17 
6.7 Surface quality ... 18 
6.8 Coating ... 18 
8 Inspection Rules ... 20 
8.1 Inspection and acceptance ... 20 
8.2 Group-batching rules ... 20 
8.3 Sampling quantity ... 21 
8.4 Re-inspection and judgment rules ... 21 
9 Packaging, Marking and Quality Certificate ... 21 
Annex A ... 22 
Annex B ... 24 
Foreword
This Standard is revised by reference to ASTM A53/A53M-05 "Standard Specification
for pipe, steel, Black and Hot-Dipped, zinc-Coated, Welded and Seamless" and JIS G
3444.2004 "Carbon steel tubes for general structural purposes".
This Standard replaces GB/T 13792-1992 "Welded steel pipe for supporting roller of
belt conveyer" and GB/T 13793-1992 "steel pipes with a longitudinal electric
(resistance) weld". Compared with GB/T 13792-1992 and GB/T 13793-1992, the main
changes are as follows.
-- Directly introduce general standard of welded steel pipe for dimensions;
-- revise permissible deviations of dimension;
-- revise the scope of length along full length;
-- add the classification of steel pipe’s curvature;
-- add the requirements in steel pipe end surface;
-- add the requirements in height of inner weld burr;
-- delete steel designations 08F, 10F and 15F; add steel designation Q235C and
low alloy steel;
-- add post-welding hot-working manufacturing method;
-- revise the spacing of slabs in flattening test;
-- revise the requirements in steel pipe hydraulic test;
-- add the requirements in steel pipe coating; propose the technical requirements in
galvanized pipe;
-- revise inspection and group-batching rules of steel pipe.
Annex A and Annex B of this Standard are normative.
This Standard was proposed by China Iron and steel Association.
This Standard shall be under the jurisdiction of National Iron and steel Standardization
Committee.
Drafting originations of this Standard. Lingyuan iron and steel Group Co., Ltd., Panyu
Chu Kong steel pipe Co., Ltd. AND Hengsui Jinghua steel pipe Co., Ltd.
Main drafting staffs of this Standard. Ma Yumin, Zhou Guofeng, Xu Zhihong, Hao
Steel pipes with a Longitudinal Electric
(Resistance) Weld
1 Scope
This Standard specifies classification, code name, dimension, shape, weight, technical
requirement, test method, inspection rules, packaging, marking and quality certificate
of steel pipe with a longitudinal electric (resistance) weld.
This Standard is applicable to steel pipe with a longitudinal electric (high frequency
resistance) weld for common purpose of which the outer-diameter is not larger than
630 mm.
2 Normative References
The following standards contain the provisions which, through reference in this text,
constitute the provisions of this Standard. For dated reference, the subsequent
amendments or revisions of these publications do not apply. However, the parties who
enter into an agreement based on the cited standards are encouraged to study whether
the latest versions of the cited documents are applicable. For undated references, the
latest edition of the normative document referred to applies.
GB/T 222 Permissible Deviations for Chemical Composition of steel Products
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The
diantipyrylmethane phosphomolybdate gravimetric method for the determination of
phosphorus content
GB/T223.5 steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method
GB/T 223.10 Methods for chemical analysis of iron, steel and alloy - The cupferron
separation-chrome azurol S photometric method for the determination of aluminium
content
GB/T 223.11 Methods for chemical analysis of iron, steel and alloy - The ammonium
persulfate oxidation volumetric method for the determination of chromium content
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 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoy-
N-phenylhydroxylamine extraction photometric method for the determination of
vanadium content
GB/T 223.16 Methods for chemical analysis of iron, steel and alloy - The
chromotropic acid photometric method for the determination of titanium content
GB/T 223.18 Methods for chemical analysis of iron, steel and alloy - The sodium
thiosulfate separation iodimetric method for the determination of copper 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 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime spectrophotometric method for the determination of nickel content
GB/T 223.24 Methods for chemical analysis of iron, steel and alloy - The extraction
separation - The dimethylglyoxime spectrophotometric method for the
determination of nickel content
GB/T 223.32 Methods for chemical analysis of iron, steel and alloy - The
hypophosphite reduction-iodimetric method for the determination of arsenic content
GB/T 223.37 Methods for chemical analysis of iron steel and alloy - The indophenal
blue photometric methods for the determination of nitrogen content after distillation
separation
GB/T 223.40 Methods for chemical analysis of iron, steel and alloy - The anion-
exchange separation-sulphochlorophenol S photometric method for the
determination of niobium content
GB/T 223.53 Methods for chemical analysis of iron, steel and alloy - The flame
atomic absorption spectrophotometric method for the determination of copper
content
GB/T 223.54 Methods for chemical analysis of iron, steel and alloy - The flame
atomic absorption spectrophotometric method for the determination of nickel
content
GB/T 223.58 Methods for chemical analysis of iron, steel and alloy - The sodium
arsenite-sodium nitrite titrimetric method for the determination of manganese
content
GB/T 223.59 Methods for chemical analysis of iron, steel and alloy - The reduced
molybdoantimonyl phosphoric acid photometric method for the determination of
phosphorus content
GB/T 223.60 Methods for chemical analysis of iro...