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GB/T 20911-2007Semi-finished products for forging -- Tolerances on dimensions shape and mass (English PDF)

锻造用半成品尺寸、形状和质量公差

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Recommended

Issue date

April 18, 2007

Implementation date

November 1, 2007

Scope

GB/T 20911-2007 is the English-translated version of 锻造用半成品尺寸、形状和质量公差.

GB/T 20911-2007 — This standard specifies the hot forming by forging the size of semi-finished products, shape and quality of the disc tolerances, ie ingot consists of the following material (Blooms), flat slab (Slabs) and billets (Billets): compliance with EN 10250-1 ~ 4 general purpose steel (see References) in accordance with EN steel for pressure purposes (see References) 10222-1 to 5.

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Document preview — GB/T 20911-2007

National Standard of the People's Republic of China

ICS: 77.140.85
Classification: J 32

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

What this standard covers1
Document data2

What this standard covers

This standard specifies the hot forming by forging the size of semi-finished products, shape and quality of the disc tolerances, ie ingot consists of the following material (Blooms), flat slab (Slabs) and billets (Billets): compliance with EN 10250-1 ~ 4 general purpose steel (see References) in accordance with EN steel for pressure purposes (see References) 10222-1 to 5. This standard does not contain EN 10243-1 (see References) in need of free forging of semi-finished products.

Document data

International classification (ICS): 77.140.85.

Chinese classification (CCS): J32.

Estimated length of the Chinese original: 7,757 words.

Adopted international standard: BS EN 10031-2003, IDT.

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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.

Referenced standards

Cited by

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