A steel plate used in the manufacture of steam boilers, pressure vessels, and other structural parts of pressure vessels. The steel plate is subjected to a certain air pressure and water pressure, as well as the use of different temperatures, such as high, medium, low temperature, and so on, so the steel plate is more stringent. In addition to requiring a certain strength and toughness, but also requires uniform material, strict restriction of harmful defects.

Low alloy steel plate: in addition to carbon steel elements, there are a certain amount of molybdenum, chromium, nickel, vanadium and so on. Low alloy steel, which is commonly used in the standard as follows: 1/2, 1/2Mo-B: ASTM A204 Mo steel, JIS G3107, Mn-1/2Mo-V, Mn-1/2Mo-1/4Ni; Mn-1/2Mo1/2Mo, Mn1/2Mo-1/2N: ASTM A302 I steel.

Steel plates for various boilers and pressure vessels generally require tensile, bending and impact tests. The test method can be referred to the standard of test method for plain carbon steel sheet steel. The heat treatment conditions specified in the standard shall be taken into account during the test. In addition, orders for nondestructive testing shall be added to places where strict use is required.

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