â¢Grooved plumbing allows for easy disassemling and reassembling of pipe and valvesâ¢Groove x Weld x Flanged 150lb plate Tee: 12" Weld x Flange x Groove Sch 10 SS316â¢Groove x Weld x Flanged 150lb plate Tee: 12" Weld x Flange x Groove Sch 10 Stainless Steelâ¢Groove x Weld x Flanged 150lb plate 12" Weld x Flange x Groove Sch 10 SS316â¢Groove x Weld x Flanged 150lb plate Tee Adapter: 12" Weld x Flange x Groove Sch 10 SS316.