PCB steel bars for prestressed concrete:
round steel bar for prestressed concrete,(P), helical grooved bar(HG), helical ribbed bar(HR), ribbed bar(R), quenched and tempered bar
Concrete centrifugal pipe pile, telegraph pole, viaduct pier, railway rolling pillow, and prestressed member.
Calibration item and content for PC steel bar
Tensile testing machine for steel bar
Bending testing for steel bar:
According to GB/T 238, repeatedly bending testing for steel bar(excepting ribbed and spiral groove steel bar) of nominal diameter less or equal 10mm. There relative specification for diameter of bending. Bending tstsing for Nominal diameter of steel bar (excepting ribbed and spiral groove steel bar) more than 10mm is according to GB/T232, diameter of bending mandrill is 10 times of nominal diameter.
Stressed relaxation testing for steel bar:
Fatige testing for steel bar: