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GBT21833.2-2020

Chinese Standard: 'GBT21833.2-2020'
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GB/T 21833.2-2020English195 Add to Cart 0--15 minutes. Auto immediate delivery. Seamless austenitic-ferritic (duplex) stainless steel tubes and pipes -- Part 2: Pipes for fluid service Valid GB/T 21833.2-2020
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GB/T 21833.2-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H 48
Partially replacing GB/T 21833-2008
Seamless austenitic-ferritic (duplex) stainless steel
tubes and pipes - Part 2: Pipes for fluid service
奥氏体-铁素体型双相不锈钢无缝钢管
第 2部分: 流体输送用管
ISSUED ON: APRIL 28, 2020
IMPLEMENTED ON: NOVEMBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Order content ... 7 
4 Dimensions, shapes, and masses ... 8 
5 Technical requirements ... 10 
6 Test methods ... 16 
7 Inspection rules ... 17 
8 Packing, marking, and quality certification ... 18 
Appendix A (Informative) High-temperature mechanical properties of some
designations ... 19 
Seamless austenitic-ferritic (duplex) stainless steel
tubes and pipes - Part 2: Pipes for fluid service
1 Scope
This Part of GB/T 21833 specifies the order content, dimensions, shapes,
masses, technical requirements, test methods, inspection rules, packing,
marking, and quality certification of seamless austenitic-ferritic (duplex)
stainless steel tubes and pipes for fluid service.
This Part applies to seamless austenitic-ferritic (duplex) stainless steel tubes
and pipes for fluid service (hereinafter referred to as steel pipes).
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content -
Visual Titration or Potentiometric Titration Method
GB/T 223.18 Methods for chemical analysis of iron steel and alloy - The
sodium thiosulfate separation iodometric 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 223.25 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime gravimetric method for the determination of nickel content
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content -
The thiocyanate spectrophotometric method
GB/T 223.28 Methods for chemical analysis of iron, steel and alloy - The α-
benzoin oxime gravimetric method for the determination of molybdenum
content
GB/T 4334-2020 Corrosion of metals and alloys - Test methods for
intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless
steels
GB/T 5777-2019 Automated full peripheral ultrasonic testing of seamless and
welded (except submerged arc-welded) steel tubes for the detection of
longitudinal and/or transverse imperfections
GB/T 7735-2016 Automated eddy current testing of seamless and welded
(except submerged arc-welded) steel tubes for detection of imperfections
GB/T 11170 Stainless steel - Determination of multi-element contents - Spark
discharge atomic emission spectrometric method (Routine method)
GB/T 13305 Micrographic method for determining area content of the α-
phases in stainless steels
GB/T 17395 Dimensions, shapes, masses and tolerances of seamless steel
tubes
GB/T 17897 Corrosion of metals and alloys - Corrosion test for pitting
corrosion resistance of stainless steels in the ferric chloride solution
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content
- Infrared absorption method after combustion in an induction furnace
(routine method)
GB/T 20124 Steel and iron - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas (routine method)
3 Order content
The contract or order for ordering in accordance with this Part shall include the
following:
a) Number of this Part;
b) Product name;
c) Steel designation;
d) Dimensions and specifications (outer diameter and wall thickness);
e) Quantity ordered (total mass or total length);
4.2 Length
4.2.1 Normal length
The normal length of the steel pipes is 3000 mm~12000 mm. According to the
requirements of t......
Related standard:   GB/T 21833.1-2020
   
 
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