DN20 X 15 (3/4" X 1/2" NB) BSPT REDUCING BUSH SS 316

Side 1 threaded: 3/4" BSPT Male
Side 1 suits an outside diameter (OD) of: 26.9mm
Side 2 threaded: 1/2" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 21.3mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.