socket coupling 1.Material:stainless steel,SUS304,316 2.Threaded:DIN,BSPT ... 1/4"to 4" 4.Standard:ISO4144 stainless steel socket,coupling(pipe threaded)1.Material:ASTM A351,CF8,CF8M,CF3,CF3M ... range:1/4" to 4"3.Pressure:150#4.Threaded type:BSPT,NPT,G5.Delivery time:within 10days6.Stock supply7.Price ... :CHINATransportation:SEA OR AIRMaterial:Carbon SteelShape:EqualTechnics:stainless steelType:Coupling