JT/T 646-2005 (Pre-Approval version) Translated English of Chinese Standard. JT/T646-2005 (JTT 646-2005; JTT646-2005) PDF Download

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 8

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This Standard specifies the classification, technical requirements and test methods of highway noise barriers materials. This Standard applies to noise barriers materials to reduce traffic noise of various grades of highways.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 9

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Book Description
This Standard specifies the size, shape, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates, etc. of iron-nickelchromium 4J6, 4J47, 4J49 alloy and iron-nickel 4J42, 4J45, 4J50 alloy. This Standard is applicable to sealed iron-nickel-chromium and iron-nickel alloy with permanent expansion matched sealed on electrical components with soft glass or ceramic.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 10

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This standard specifies the meaning and determination of steel-parts carburizing and carbonitriding hardened-case depth. This standard is applicable to carburizing and carbonitriding hardened layer; and the parts that, when they are final-heat-treated, have a hardness of less than 450 HV at a distance of three times the case-hardened depth, from the surface. For steel-parts that can not meet the above conditions, it shall be determined in accordance with a special agreement. For steel-parts of which, at a distance of three times the hardened-case depth from the surface, the hardness is greater than 450 HV, this standard is still valid, provided that a limiting hardness value that is greater than 550 HV (in steps of 25HV) is selected for the case-hardened depth.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 8

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Book Description
This standard specifies the size, shape, technical requirements, test methods, inspection rules, packaging, marks, quality certificates of glass sealed iron-chromium alloy 4J28. This standard applies to iron-chromium alloys that are matched and sealed by soft glass on electrical components.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 34

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Book Description
This Standard specifies the metallographic-structure grade-level, inspection and examination methods for internal combustion engines casting eutectic aluminumsilicon alloy pistons AND aluminum-silicon-copper-magnesium (Al-Si-Cu-Mg) alloy pistons.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 9

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Book Description
This standard specifies the requirements, test methods, inspection rules, packaging, marking, transportation, storage of sodium (potassium) isobutyl xanthate. This standard applies to isobutyl sodium (potassium) industrial supplies, which are produced with isobutyl alcohol, carbon disulfide, sodium hydroxide (or potassium hydroxide) as raw materials. This product is mainly used as a collector for non-ferrous metal ore flotation.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 67

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Book Description
This Standard specifies the terms and definitions for general use, category of tyres, components of tyres, tread pattern, rims, dimension of tyres, performance and test of tyre, tyre marking, appearance defects, application, retread and repair.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 16

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Book Description
This document specifies the type approval application, type approval test method, production conformity inspection method and emission limits of crankcase pollutants from heavy-duty vehicles equipped with P. I engines. This document is applicable to heavy-duty vehicles equipped with P. I engines. The engines to be tested shall include those for which anti-leakage measures have been taken, but exclude those engines (for example, horizontally opposed engines), in which, even a slight leakage in the structure will cause abnormal operation.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 74

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Book Description
This standard specifies the emission limits and measurement methods of exhaust pollutants from diesel engines of tri-wheel & low-speed goods vehicles. This standard is applicable to diesel engines which are installed in tri-wheel & low-speed goods vehicles, as well as their vehicles. If the diesel engines, which are installed in tri-wheel & low-speed goods vehicles, have passed the type approval, according to GB 17691-2001 "Limits and measurement methods for exhaust pollutants from compression ignition (C.I.) engines of vehicles", THEN, the diesel engines installed in these vehicles do not need to be type approved in accordance with this standard.

Author: https://www.chinesestandard.net
Publisher: https://www.chinesestandard.net
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 24

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Book Description
This standard specifies the terms and definitions, classification and naming marks, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation, safe coating and protection of natural stone protectors. This standard applies to the natural stone protector for building decoration.