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CB/T 4558-2025J type flange cast iron liquid flow observer (English PDF)

J类法兰铸铁液流观察器

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Issued by

Ministry of Industry and Information Technology of the People's Republic of China

Level / Type

National · Recommended

Issue date

April 10, 2025

Implementation date

November 1, 2025

Scope

CB/T 4558-2025 is the English-translated version of J类法兰铸铁液流观察器.

CB/T 4558-2025 — J type flange cast iron liquid flow observer

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Document preview — CB/T 4558-2025

National Standard of the People's Republic of China

ICS: 47.020.30
Classification: U 55
Replacing: CBM 1039-1981

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

What this standard covers1
Document data2

What this standard covers

This standard specifies the classification and marking, requirements, test methods, inspection rules, marking, packaging and storage of J-type flange cast iron flow viewers. This standard applies to the design, manufacture and acceptance of viewers for ship piping systems

Document data

International classification (ICS): 47.020.30.

Chinese classification (CCS): U55.

Estimated length of the Chinese original: 7,795 words.

Supersedes the earlier edition CBM 1039-1981.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.

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