•Material: High strength and high toughness alloy steel-Quenched and Tempered •100% tested at 2.5 times of working load limit •100% MPI for crack detection •Breaking load test for samples of each batch •Fatigue test at 1.5 times of Working Load Limit for 20000 cycles for samples of each batch
•Material: High strength and high toughness alloy steel •100% MPI for crack detection •Breaking load test for samples of each batch •Welding must be performed by qualified welder