... "-----4" Thread:BSPT,BSP,NPT,DIN2999 Material:SS304 ,SS316 Process: Lost Wax casting Professional manufacturer of stainless steel BushingSize:1/8"---4"Thread ... :BSPT,BSP,NPT,DIN2999Material:SS304,SS316Process:Lost Wax casting and machining process and advance spectrometer.Have passed the ISO9001 ...