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Originally approved in 1936, this specification is heavily utilized in petroleum and chemical construction applications. The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature or high pressure service. This specification includes fasteners intended for use in pressure vessels, valves, flanges, and fittings. Although, this material is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are spe...

VẬT LIỆU THEO TIÊU CHUẨN: JIS - ASTM This is to indicate the equivalent metallic material in JIS standard and ASTM standard. However, it is to be noted that this is reference only for users' convenience and there might be differences in detailed composition etc.   1. PIPE Material Description ASTM Standard JIS Standard Remarks Carbon Steel A135 Gr.A G 3454 STPG 370   A53 Gr.E-A   A135 Gr.B STPG 410   A53 Gr.E-B   A53 Type F G 3452 ...