GB/T 223.70-1989Methods for chemical analysis of iron, steel and alloy--The o-phenanthroline spectrophotometric method for the determination of iron content (English PDF)
钢铁及合金化学分析方法 邻菲啰啉分光光度法测定铁量
GB/T 223.70 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 223.70-2008 | Iron, steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method | Valid |
| 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 | Obsolete |
GB/T 223.70-1989 is obsolete. It has been replaced by GB/T 223.70-2008. 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
February 21, 1989
Implementation date
July 1, 1990
Scope
GB/T 223.70-1989 is the English-translated version of 钢铁及合金化学分析方法 邻菲啰啉分光光度法测定铁量.
GB/T 223.70-1989 is the Chinese national standard "Methods for chemical analysis of iron, steel and alloy--The o-phenanthroline spectrophotometric method for the determination of iron content".
It was issued on February 21, 1989 by the State Bureau of Technical Supervision, and took effect on July 1, 1990. It is obsolete: it has been replaced by GB/T 223.70-2008.
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Document preview — GB/T 223.70-1989
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: 1989-02-21.
Date of implementation: 1990-07-01.
Status: obsolete, replaced by GB/T 223.70-2008.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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Related Standards
GB/T 223.71-1997 — Methods for chemical analysis of iron, steel and alloy--The gravimetric method after combustion in the pipe furnace for the determination of carbon content
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
GB/T 223.72-2008 — Iron, steel and alloy - Determination of sulfur content - Gravimetric method
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GB/T 223.70-1989
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