... (SW) 2.SS304,316 3.Size 1/8"-4" 4.Socket Weld 5.MSS SP-114 Standard,ISO 9001-2008 1 ... . Casting Socket Weld Tee(SW) comply with Casting : chemical properties per ASTM ... ,union, tee, cross, bushing, cap, nipple,nut etc. 3. Casting Socket Weld Tee : material chemical composition MAXC%Mn%Si%S%P ...