GB 699-88 PDF

Auto immediate delivery. Table of Contents Foreword Quality Carbon Structural Steels 1 Scope This Standard specifies classification and code, order information, size, appearance and weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificate of quality carbon structural steel bars. This Standard is applicable to hot-rolled or forged quality carbon structural steel bars of which nominal diameter or thickness is not greater than mm. Hot- rolled or forged quality carbon structural steel bars of which nominal diameter or thickness is greater than mm shall also be supplied, as agreed between the buyer and the supplier hereinafter referred to as steel bars The designations and chemical composition specified in this Standard are also applicable to steel ingots, steel billets, steels and its products of other cross- sections. For dated references, only the edition cited applies.

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Chinese standards on steel materials

W elded Steeel Pipe. We Sino East is a company that producing all kinds of pipes, square pipes, Our company's products are exported to Brazil , Indonesia , Singapore , Central Asian countries, and other countries and regions. Applications: petroleum,power,gas metallurgy ,papermaking ,chemical,medical equipment ,aviation ,boiler heat, exchanger,shipbuilding,construction,etc. View larger image. Hot sale in. Contact Supplier. Product Details.

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Database of Steel and Alloy (Marochnik)

Ion Plasma Nitriding. Total Materia New Application Launch! This group of Chinese GB standard specifications covers carbon and alloy steel plates and forgings used in boilers and pressure vessels, high-strength low-alloy steels, heat-treatable steels, hot and cold-rolled plates for cold forming, steels for concrete reinforcement and prestressed concrete and the properties for railway service rails and accessories. Standards for various types of steel pipe which specify requirements for high-temperature service, ordinary use, and special applications such as fire protection use, are also presented. Specifications for steel tubes list standard requirements for boiler and superheater tubes, general service tubes, still tubes in refinery service, heat exchanger and condenser tubes, mechanical and structural tubing.

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GB standards for steel materials

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GB/T 699 Grade 20

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