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GB 7228-1987 WITHDRAWN

Measuring and calculating method on efficiency of rectifiers and their consumers energy-conversion efficiency in electro-chemical industry

WITHDRAWN published on 3.2.1987

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GB 7229-1987 WITHDRAWN

Sucker rods and their couplings

WITHDRAWN published on 1.1.1987

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1 150.80 USD

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GB 7230-1987 WITHDRAWN

Gas detector tube units

WITHDRAWN published on 4.2.1987

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GB 7231-1987 WITHDRAWN

Basic identification colours and code indications for industrial pipelines

WITHDRAWN published on 4.2.1987

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ON REQUEST

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GB/T 7231-2003 WITHDRAWN

Basic identification colors and code indications and safety sign for industrial pipelines

WITHDRAWN published on 13.3.2003

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GB/T 7232-1999 WITHDRAWN

Terminology of metal heat treatment

WITHDRAWN published on 3.9.1999

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GB/T 7232-2012 WITHDRAWN

Terminology of metal heat treatment

WITHDRAWN published on 3.9.2012

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GB/T 7233-1987 WITHDRAWN

Methods for ultrasonic testing and for specifying quality levels of steel castings

WITHDRAWN published on 4.2.1987

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622.80 USD

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GB/T 7233.1-2009 WITHDRAWN

Steel castings—Ultrasonic examination—Part 1:Steel castings for general purposes

WITHDRAWN published on 30.10.2009

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102.00 USD

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GB/T 7233.2-2010 WITHDRAWN

Steel castings—Ultrasonic examination—Part 2:Steel castings for highly stressed components

WITHDRAWN published on 23.12.2010

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1 390.80 USD

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