GB / T 18984-2003 The standards and Japan JISG3460-1988 "low-temperature steel piping" and JISG3464-1988 "low-temperature heat exchanger pipe," the consistency of the level of non-equivalent, the main differences are as follows: An increase of a temperature level of 70 ℃, and a temperature of 45 ℃ is divided into three grades according to the strength grades of steel; - Increased inspection requirements macrostructure; - An increase of non-metallic inclusions inspection requirements. Mechanical Properties: Grade fractured tensile yield strength under elongation 16MnDG 490-665 not more than 315 not less than 30 10MnDG not less than 400 not less than 240 not more than 35 09DG not less than 385 not less than 210 not more than 35 09Mn2VDG not less than 450 not less than 300 not more than 30 06Ni3MoDG not less than 455 not less than 250 not more than 30
Material specifications of origin
09Mn2VDG 76-114x4-30 GB / T 18984-2003 Baosteel / import
09Mn2VDG 133-168x4-30 GB / T 18984-2003 Baosteel / import
09Mn2VDG 219-820x10-70 GB / T 18984-2003 Chengdu / import |
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