1.product name pipe fitting 2.material monel 400 3.45 90 180 elbow 4.R=1.0D R=1.5D size: elbow45. 90. 180 diameter:133.108.89.76.etc. R=1.0 D R=1.5 D exe. standardHG/T3651-99grade 2 titanium elbow OD:18mm~1220mm WT: >0.8mm tolerance:0.03mmgrade 2 titanium elbowOD:18mm~1220mmWT: >0.8mmtolerance:0.03mmspecifications:1.standard sizes: 45°, 90°,180°(also according to your order)2.material: Gr1, Gr2, ...