backing ring

backing ring

[′bak·iŋ ‚riŋ]
(engineering)
A strip of metal attached at a pipe joint at the root of a weld to prevent spatter and to ensure the integrity of the weld.

backing ring

A backing in the form of a ring, used during the welding of piping at butt joints.
References in periodicals archive ?
The spacing pegs located radially around the backing ring were removed before joint set-in.
Additionally, the weld itself is made to the backing ring contained within the sleeve.
The dust seal is affixed to the backing ring in this improved assembly, thereby allowing the hydraulic system to extract the entire assembly back from the rotor end.
Tenders are invited for Backing Ring For Ctrb Class E 6 Inch X 11 Inch Narrow Jaw To Rdso Drg.
Material - Hss En - 19 For Punching The Station Code And Month And Year On The Surface Of Backing Ring After The Mounting Of Overlhauled Ctrb Bearing On Boxn Wheel As Per Directive Of Rdso Letter No.
Tenders are invited for Backing Ring Fitted Flanged And Non-Vented For Ctrb 6X11 Class - E To Nei Drg.
Sealed Unit Along With Backing Ring End Cap, Locking Plate And 3 Cap Screws Duly Filled With Grease To Brenco Inc Drg.
Seals include Nitrile O-rings with Teflon backing rings or several optional seal materials, including Ethylene-Propylene, Viton and Neoprene.
In service, installation takes place on the same backing rings used with the bronze.
The fittings to be solvent welded bracketed to manufacturer~s recommendations and, at connecting points to the valves and items of plant, stub flanges are to be fitted complete with galvanised mild steel backing rings.