... .Samples:free samples stainless steel quick coupling hose connectors type B Precision Investment Casting: Silcon Sol ProcessCNC Precised MachiningQuality Control: ... DRN2828,MIL-C274876,Size:1/2”-6”7,Types: A,B,C,D,E,F,DC,DP8,Thickness:SCH20, SGP,STD ... Automatic Lathes & 12 Manual Lathes Quality Control: 4 QC, first-class Lab, Spectrograph "Q4 TASMAN" Technology from Germany Strong Production Capability ...