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

2. Yield strength of 35# seamless steel pipe: 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 of great significance for evaluating the load-bearing capacity and safety of 35# seamless steel pipe in actual use.

3. Elongation of 35# seamless steel pipe: 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. 4. Reduction of area (RIA) of 35# seamless steel pipe: Not less than 45%. RIA is the percentage reduction in cross-sectional area after tensile fracture, relative to the original cross-sectional area. It is an important indicator for evaluating the plasticity of 35# seamless steel pipe.

5. Impact energy of 35# seamless steel pipe: Not less than 55 J. Impact energy reflects the fracture resistance of 35# seamless steel pipe under impact load and is valuable for evaluating its performance under dynamic loads.

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

7. Hardness of 35# seamless steel pipe: In the untreated state, the hardness should not exceed 197 HB. Hardness reflects the ability of 35# seamless steel pipe to resist localized plastic deformation and is a valuable reference for evaluating its wear resistance and service life.