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GB 6654-1986 Steel plates for pressure vessels using carbon steels and low alloy steels was issued in March 1986 by the Ministry of Machinery & Electronics Industry of the Peoples Republic of China. This standard specifies the requirements for steel plates used for pressure vessels, including those for the manufacture of steel pressure vessels in the form of welded joints or of metallic welded joints with an insertion.
The content of this standard covers the ordering requirements, technical requirements, testing and inspection, manufacturer marking, packaging and inspection documents, quality certificate, and other requirements for steel plates for pressure vessels using carbon steels and low alloy steels.
The maximum thickness of the steel plates for pressure vessels used in this standard is limited to 50mm. The availability of the steel plates for pressure vessels according to this standard is limited to the range of carbon steels and low alloy steels with a specified minimum yield point of not less than 235 N/mm2. The carbon equivalent (CE) of the specified steel plates shall not exceed 0.45.
This standard specifies that the steel plates for pressure vessels using carbon steels and low alloy steels have reached a rated strength of 235N/mm2, and that the tensile strength, yield strength, elongation, hardness, and impact toughness satisfy related requirements of this standard.
The test and inspection items required by this standard mainly include visual inspection, thickness measurement, flatness measurement, Brinell hardness test, sampling inspection for tensile properties, grain size test, flattening test, impact test, and ultrasonic detection of material defects.
The quality certificates for the steel plates for pressure vessels using carbon steels and low alloy steels in this standard shall be formulated by the manufacturer according to the provisions of GB/T 6194-2008 (Quality Certificates for Technical Conditions of Steel and Alloy Plates for Pressure Vessels).
The implementation of this standard is of great significance for the production of pressure vessels using carbon steels and low alloy steels, and for improving the product quality of steel plates for pressure vessels.
