... THREAD : BSP ,BSPT, NPT, DIN, AND SO ON. WORKMANSHIP : CASTING WORK PRESSURE : 150PSI ODUCT: stainless steel pipe fittingsMaterial :SUS304 , SUS316 ... 90e(s)and90(e)s, (SLB)STREETELBOW,(TB)Tee,(R)Tee and Cross Tee,Union, (HB)Hexagon Brushing Valve series includeBall Valve,Welded ... No burrs are inside fittings or exite in reasonale scal Investment Casting Metal hose fitting with male and female thread