TB/T 447-1990Technical specification for the solid manganese steel frogs (English PDF)
高锰钢辙叉技术条件
TB/T 447 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| TB/T 447-2020 | High manganese steel frog | Valid |
| TB/T 447-2004 | Technical specification for the solid manganese steel frogs | Obsolete |
| TB/T 447-1990 | Technical specification for the solid manganese steel frogs | Obsolete |
TB/T 447-1990 is obsolete. It has been replaced by TB/T 447-2004. This page sells the obsolete edition, for projects and contracts that still cite it.
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Level / Type
National · Recommended
Issue date
April 19, 1991
Implementation date
August 30, 1992
Scope
TB/T 447-1990 is the English-translated version of 高锰钢辙叉技术条件.
TB/T 447-1990 is the Chinese industry standard "Technical specification for the solid manganese steel frogs". It was issued on April 19, 1991, and took effect on August 30, 1992. It is obsolete: it has been replaced by TB/T 447-2004.
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Document preview — TB/T 447-1990
Contents
- Document data
1 Document data
Sector: Railway (industry standard).
Date of issue: 1991-04-19.
Date of implementation: 1992-08-30.
Status: obsolete, replaced by TB/T 447-2004.
......
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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TB/T 447-1990
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