Tensile strength: Not less than 530 MPa. This indicator reflects the maximum stress that a 35# seamless steel pipe can withstand during tension, demonstrating its resistance to deformation and fracture.


Yield strength: Not less than 315 MPa. Yield strength is the stress value at which significant plastic deformation begins to occur in 35# seamless steel pipe. It is crucial for assessing the load-bearing capacity and safety of 35# seamless steel pipe in practical use.


Elongation: Not less than 20%. Elongation represents the percentage of total deformation of the gauge length section after tensile fracture, reflecting the plastic deformation capacity of 35# seamless steel pipe.


Reduction of area: Not less than 45%. Reduction of area is the percentage of reduction in cross-sectional area after tensile fracture, compared to the original cross-sectional area. It is also an important indicator for measuring the plasticity of 35# seamless steel pipe.


Impact Energy: Not less than 55 J. Impact energy reflects the fracture resistance of 35# seamless steel pipe under impact load and is of great value in evaluating the performance of 35# seamless steel pipe under dynamic load.


Impact Toughness: Not less than 69 J/cm². Impact toughness further quantifies the toughness performance of 35# seamless steel pipe under impact load.


Hardness: In the untreated state, the hardness does not exceed 197 HB. Hardness is the ability of 35# seamless steel pipe to resist local plastic deformation and has a certain reference value in evaluating the wear resistance and service life of 35# seamless steel pipe.