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GB/T 21470-2008Machining allowances and tolerances for steel open die forgings on hammer -- Disks, columns, rings and seamless cylindrical sleeves (English PDF)

锤上钢质自由锻件机械加工余量与公差盘、柱、环、筒类

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Issued by

Standardization Administration of China

Level / Type

National · Recommended

Issue date

February 28, 2008

Implementation date

August 1, 2008

Scope

GB/T 21470-2008 is the English-translated version of 锤上钢质自由锻件机械加工余量与公差盘、柱、环、筒类.

GB/T 21470-2008 — This standard specifies the disk, columns, perforated disk, ring, sleeve and other types of forgings Machining allowances and tolerances. This standard applies to the free carbon content of not more than 0.9%, and other alloying elements the total content of not more than 4% of carbon steel and alloy steel Forgings.

Where beyond the scope of this standard forgings, and the remaining amount of tolerance by both parties prior consultation.

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Document preview — GB/T 21470-2008

National Standard of the People's Republic of China

ICS: 77.140.85
Classification: J 32
Replacing: GB/T 15826.2-1995; GB/T 15826.3-1995; GB/T 15826.4-1995; GB/T 15826.5-1995

Issued by: Standardization Administration of China

What this standard covers1
Document data2
Standards quoted by this document3

What this standard covers

This standard specifies the disk, column, perforated disc, ring, sleeve forgings mechanical and other types of allowances and tolerances. This standard applies to open die forgings up to 0. 9% carbon content and other alloying elements does not exceed 4% of the total content of carbon steel and alloy steel. Where beyond the scope of this standard forgings, and the remaining amount of tolerance be negotiated by both parties.

Document data

International classification (ICS): 77.140.85.

Chinese classification (CCS): J32.

Estimated length of the Chinese original: 16,195 words.

Supersedes the earlier edition GB/T 15826.2-1995; GB/T 15826.3-1995; GB/T 15826.4-1995; GB/T 15826.5-1995.

Standards quoted by this document

GB/T 21469; JB/T 9179.4; JB/T 9179.5; JB/T 9179.7; JB/T 9179.8

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.

Referenced standards

Normative references

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