... ) Material: Gr.1,Gr.2,Gr.3,Gr.7,Gr.9,Gr.12 2) OD: 6-159mm; WT:0.5-15mm ... Titanium pipes1. Standard: to ASTM B/ASME SB 861,337,3382. Material: Gr.1,Gr.2,Gr.3 ... ,Gr.7,Gr.9,Gr.123. OD: 6-159 mm; WT: 0.5-15 ... , PED, DNV and Lloyd's certification successfully. ASTM B/ASME SB 861 titanium welded pipe