... 0%, Low Relaxation ≤2.0%Feature: good properties for lap welding and heat forging, low relaxation, comprehensive ... : PC bars mainly used in high strength prestressed concrete pipe pile, electric pole, railway sleeper, viaduct pier ... are mainly used to electric concrete pole, railway sleeper, PHC pile, precast concrete unit etc.Trade Terms: ... CIFPayment Terms: TT / LC steel bars for prestressed concrete