GB/T699-1999 Quality Carbon Structural Steels

Standard classification: material standard standard system: national standard (GB) shape classification: carbon steel detailed description: specifies the chemical composition and mechanical properties of 20#, 25#, 35#, 45#, 40Mn and other materials. High-grade high-quality steel in the grade after the "A"; super high-quality steel in the grade after the "E". Can manufacture high performance strength bolts, studs, nuts, gaskets, etc., such as performance level 8.8.

Standard Classification:

Material Standards

standard system:

National Standard(GB)

Shape classification:

Carbon Steel

Detailed Description:

has stipulated20#,25#,35#,45#,40MnThe chemical composition and mechanical properties of such materials.

High-quality steel is added after the grade“A”; Premium quality steel is added after the grade“E”。

Can manufacture high performance strength bolts, studs, nuts, gaskets, etc., such as performance level8.8Level.

 

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