Titanium spring Material:titanium Gr1,Gr2,Gr5 Standard:ASTM B337,B338,B861 Certification:ISO9001:2000 Titanium spring1.Material:titanium Gr1,Gr2,Gr52.Standard:ASTM B337,B338,B8613.OD:6-120mm TH:0.4-10mm L:2000mm4.Delivery Time:3-7days5.packing details:wooden case We are looking forward to receiving your inquiry. titanium spring