GB T 3077 40Mn2 forging steel round bar


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Mechanical Properties

National Standard of PRC Alloy Structure Steels GB/T

Alloy Structure Steels GB/T 3077 1999 Replace GB/T 3077 1988 . 1. Scope GB/T233 1982 Metallic materials—Forging test GB/T702 1986 Hot rolled round and square steel bars—Dimension, shape, weight and shape weight and tolerance of forged bar and square steel should be consistent with the

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Gb3077 SlideShare

Foreword The standard has revised GB/T 3077 1988 ”The Technical Conditions of Alloy Structure Steel”. —Charpy notch impact test GB/T231 1984 Metallic materials—Brinell Hardness test GB/T233 1982 Metallic materials—Forging test GB/T702 1986 Hot rolled round and square steel bars—Dimension, shape, weight and tolerance GB/T 908

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Product Description:

shipbuilding steel stock


ABS,LR shipbuilding steel


steel for shipbuilding and oil platform:

Henan BEBON Iron & Steel Co., Ltd , is professional in exporting the steel for shipbuilding and oil platform. Our product have the following several feature
1.The size of steel plates we can supply is 3mm-180mm * 1250mm-4000mm * 3000mm-18000mm
2.The main standard our steel is according to ASTM A131,API.
3.The main classification society we cooperate are: ABS ,GL, LR, BV, NK,DNV,KR,RINA.
4.Productive technology: HR,CR,TMCP,N,Q&T,IMPACT TEST,Z15,Z25,Z35.
5.Hard stamp about the brand of manufacturer, Heat No.,Batch No., steel grade, steel size, and the brand of Classification Society.
6.Blasting according to SA2.5 standard, and the shop primed on the steel, coating thickness is 15-35 micrometer.


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