... : GR1,GR2,GR3,GR4,GR5,GR7,GR9,GR12 Model No.:T/P 5001 Using area:aerospace, architecture, sporting equipment, military hardware, watch ... , Healthy environmental protection of metal 2, Corrosion resistance, It won't rust in the deep sea for 100 years 3, Wide ... tube 2TA TB TC GR BT OT VT brand 3GB/T ASTM DIN JIS BS standard 4R/M/Y/ST supply ...