This paper presents test results of bending and weld joint of the HSA800. HSA800 for the high performance steel has a minimum 800MPa tensile strength. HSA800 can effectively reduce the size and thickness of structural member for high-rise building. Bending test and weld joint test of HSA800 are conducted to verify fabrication and performance of steel pile. Test results show that HSA800 is appropriate to make a heavy wall steel pipe. The fracture is occurred at the base metal of weld joint which can exhibit strength higher than its base metal.