GB/T 223.69-1997Methods for chemical analysis of iron, steel and alloy. The gas-volumetric method after combustion in the pipe furnace for the determination of carbon content (English PDF)
钢铁及合金化学分析方法 管式炉内燃烧后气体容量法测定碳含量
GB/T 223.69 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 223.69-2008 | Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace | Valid |
| GB/T 223.69-1997 | Methods for chemical analysis of iron, steel and alloy. The gas-volumetric method after combustion in the pipe furnace for the determination of carbon content | Obsolete |
GB/T 223.69-1997 is obsolete. It has been replaced by GB/T 223.69-2008. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
State Bureau of Technical Supervision
Level / Type
National · Recommended
Issue date
March 17, 1997
Implementation date
September 1, 1997
Scope
GB/T 223.69-1997 is the English-translated version of 钢铁及合金化学分析方法 管式炉内燃烧后气体容量法测定碳含量.
GB/T 223.69-1997 is the Chinese national standard "Methods for chemical analysis of iron, steel and alloy. The gas-volumetric method after combustion in the pipe furnace for the determination of carbon content".
It was issued on March 17, 1997 by the State Bureau of Technical Supervision, and took effect on September 1, 1997. It is obsolete: it has been replaced by GB/T 223.69-2008.
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Document preview — GB/T 223.69-1997
National Standard of the People's Republic of China
Issued by: State Bureau of Technical Supervision
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Issuing body: State Bureau of Technical Supervision.
Date of issue: 1997-03-17.
Date of implementation: 1997-09-01.
Status: obsolete, replaced by GB/T 223.69-2008.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
Referenced standards
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- GB/T 16555-2025Chemical analysis of refractories containing carbon, silicon carbide or nitride
- GB/T 20065-2025Screw-thread steel bars for the prestressing of concrete
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Related Standards
GB/T 223.70-2008 — Iron, steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method
GB/T 223.68-1997 — 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 223.70-1989 — Methods for chemical analysis of iron, steel and alloy--The o-phenanthroline spectrophotometric method for the determination of iron content
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GB/T 223.69-1997
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