Skip to product information
1 of 9

PayPal, credit cards. Download editable-PDF & invoice in 1 second!

GB 18248-2008 English PDF (GB18248-2008)

GB 18248-2008 English PDF (GB18248-2008)

Regular price $150.00 USD
Regular price Sale price $150.00 USD
Sale Sold out
Shipping calculated at checkout.
Quotation: 24-hr self-service. Click GB 18248-2008
See Chinese contents: GB 18248-2008

GB 18248-2008: [GB/T 18248-2008] Seamless steel tubes for gas cylinder

This standard specified the size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification of seamless steel tubes for gas cylinder and energy accumulator shell. This standard applies to seamless steel tubes for manufacturing gas cylinder and energy accumulator shell.
GB/T 18248-2008
GB
ICS 77.140.75
H 48
NATIONAL STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
GB 18248?€?2008
Replacing GB 18248?€?2000
Seamless steel tubes for gas cylinder
ISSUED ON. DECEMBER 23, 2008
IMPLEMENTED ON. DECEMBER 01, 2009
Issued by.
General Administration of Quality Supervision, Inspection and
Quarantine of the PEOPLE Republic of China;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Code ... 7
4 Required information of ordering ... 8
5 Size, shape, weight and tolerance ... 8
6 Technical requirements ... 11
7 Inspection and test methods ... 14
8 Inspection rules ... 14
9 Packaging, marking, and quality certificate ... 15
Annex??A (Informative) The approximate comparison of domestic and foreign grade .. 16 Annex??B (Informative) Mechanical property data reference values ... 17 Foreword
5.1, 5.2, 5.4, 5.6, 6.4, 6.8.2, Annex A and Annex B of this standard are recommendatory; and the rest are mandatory.
This standard replaces GB 18248-2000 Seamless Steel Tubes for Gas Cylinder. Compared with GB 18248-2000, it makes the main changes to the following technical contents.
?€? Modify the scope of the standard;
?€? Modify the size tolerance of steel tubes;
?€? Adjust P and S content requirements of steel. Add 2 designations of 34CrMo4 and 30CrMnSiA;
?€? Modify the steel smelting methods;
?€? Add the thermal expansion tabulation method. Modify the delivery status of steel tubes;
?€? Delete the macroscopic examination;
?€? For steel tubes made by rolling (forging) tube billet, inspection performance of non-metallic inclusions is changed from ?€?on tube billet?€? to ?€?on steel tubes?€?. At the same time, modify the inspection requirements of non-metallic inclusions of steel tubes according to GB/T 10561;
?€? Add quality requirements of inner and outer surfaces straights of steel tubes; ?€? Modify the longitudinal mechanical property data measured from the samples that are made by the steel tube heat-treated billet. And the required value is changed to be reference value, as listed in Appendix B.
Annex A and Annex B of this standard are informative.
This standard was proposed by China Electrical Equipment Industrial Association. The Standard shall be under the jurisdiction of the National Steel Standardization Technical Committee.
Drafting organizations of this standard. Baoshan Iron and Steel Co., Ltd., Metallurgical Industry Information Standards Institute, Panzhihua Iron and Steel Group Chengdu Iron and Steel Co., Ltd., Tianjin Pipe Group Corporation, Hunan Hengyang Steel Tube (Group) Co., Ltd., and Jiangsu Zhenda Steel Tube Group.
Main drafters of this standard. Xu Qing, Wu Dongxing, Yu Chengfeng, Zhang Shuhua, Huang Ying, Yan Ru, An Jianbo, Zhao Bin, Li Jinling, and Li Qi.
The previous version replaced by this standard is.
?€? GB 18248-2000.
Seamless steel tubes for gas cylinder
1 Scope
This standard specified the size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification of seamless steel tubes for gas cylinder and energy accumulator shell.
This standard applies to seamless steel tubes for manufacturing gas cylinder and energy accumulator shell.
2 Normative??References
The articles contained in the following documents have become part of this standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this standard. For the undated documents so quoted, the latest editions shall be applicable to this standard.
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 223.14 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 223.17 Methods for chemical analysis of iron steel and alloy. The
diantipyrylmethane photometric method for the determination of titanium 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 223.24 Methods for chemical analysis of iron, steel and alloy. The extraction separation ?€? The dimethylglyoxime spectrophotometric method for the determination of nickel content
GB/T 223.26 Iron steel and alloy ?€? Determination of molybdenum content ?€? The thiocyanate spectrophotometric method
GB/T 223.30 Methods for chemical analysis of iron, steel and alloy. The arsenazo ??? spectrophotometric method for the determination of zirconium content after separation by p-bromomandelic acid
GB/T 223.40 Iron steel and alloy ?€? Determination of niobium content by the sulphochlorophenol S spectrophotometric method
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 223.59 Iron steel and alloy ?€? Determination of phosphorus content ?€? Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy. The perchloric acid dehydration gravimetric method for the determination of silicon content GB/T 223.62 Methods for chemical analysis of iron, steel and alloy. The butyl acetate extraction photometric method for the determination of phosphorus content GB/T 223.63 Methods for chemical analysis of iron, steel and alloy. The sodium (potassium) periodate photometric method for the determination of manganese content GB/T 223.64 Iron steel and alloyed - Determination of manganese content ?€? Flame atomic absorption spectrometric method
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy. The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
GB/T 223.69 Iron steel and alloy ?€? Determination of carbon contents ?€?
Gas-volumetric method after combustion in the pipe furnace
GB/T 223.76 Methods for chemical analysis of iron, steel and alloy The flame atomic absorption spectrometric method for the determination of vanadium content GB/T 223.78 Methods for chemical analysis of iron, steel and alloy-Curcumin spectrophotometric method for the determination of boron content
GB/T 228-2002 Metallic materials ?€? Tensile testing at ambient temperature (eqv ISO 6892.1998)
GB/T 229-1994 Metallic materials ?€? Charpy notch impact test (eqv ISO 148.1983 and ISO 83.1976)
GB/T 241-2007 Metal materials ?€? Tube ?€? Hydrostatic pressure test
GB/T 2102-2006 Acceptance packing marking and quality certification of steel pipe GB/T 2975-1998 Steel and steel products ?€? Location and preparation of test pieces for mechanical testing (eqv ISO 377.1997)
GB/T 4336-2002 STANDARD test method for spark discharge atomic emission spectrometric analysis of carbon and low-alloy steel (routine method)
GB/T 5777-1996 Seamless steel pipe and tubing-Methods for ultrasonic testing (eqv ISO 9303.1989)
GB/T 7735-2004 Steel tubes ?€? The inspection method on eddy current test (ISO 9304.1989,MOD)
GB/T 10561-2005 Steel ?€? Determination of content of nonmetallic inclusions ?€? Micrographic method using standards diagrams (ISO 4967.1998,IDT)
GB/T 12606-1999 Steel tubes ?€? The testing method of magnetic flux leakage (eqv ISO 9402.1989 ISO 9598. 1989)
GB/T 17395 Dimensions shape masses and tolerances of seamless steel tubes (GB/T 17395-2008, ISO 1127.1992, ISO 4200.1991, ISO 5252.1991,NEQ)
GB/T 20066 Steel and iron Sampling and preparation of samples for the determination of chemical composition (GB/T 20066-2006, ISO 14284.1996,IDT)
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 20123-2006, ISO 15350.2000, IDT)
GB/T 20125 Low-alloy steel ?€? Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
GB/T 20126 Unalloyed steel ?€? Determination of low carbon content ?€? Part 2. Infrared absorption method after combustion in an induction ...

View full details