Jiangyin Fasten Steel Products Co., Ltd is the biggest manufacturer of PC strands in the world with a yearly output of 160 thousands metric tons for PC strands and 30 thousands metric tons for PC bars. As the leader of low-relaxation PC strand in the world, FASTEN has possessed the most advanced manufacturing technique and equipmen. we can supply all the grade and size pc strand (steel strand for prestress concrete)in accordance with ASTM A416, BS 5896, GB/T 5224, EN10138, ISO 6934, AS 1311, JIS G3536, IS 14268, SI 1735, GB/T5223.3 and JIS G3137 as well as the advanced standards specified by you.