Stub End

  •  Stub End
  •  Stub End
  •  Stub End
Type Nominal diameter Thickness
Butt weld or die stamped stub ends 1/2"~24" DN15-DN600 SCH10S~SCH160
Austenitic stainless steel Super duplex stainless steel Nickel-based alloy steel Carbon steel/alloy steel Other materials
304 304L 304H 304LN S31803 S32205 N10276 N04400 N06600 Q235 20# 20G TA1 TA2 TA3 TC1~TC9
316 316L 316H 316Ti S32304 S32760 N06600 N06625 N06690 WPB A105 16Mn LF2 LF3 LF5 LF6 LF10
310S 321 321H 347 S32550 S32750 N08800 N08825 N08904 45# 15CrMo Al, Ti, martensite
S31254 S33400 N08020 N08810 N08811 A350LF2 A420Gr.WPL6

Stub end is a kind of steel butt weld fitting serving as a lap joint in loose flange, which is commonly used in environment with low temperature and pressure, but strong corrosion. To be applied in highly-corrosive medium, the loose flange employs corrosion-resistant material for the stub end, which is the part that comes in direct contact with the medium. The left flange parts are made from low-grade material and are clamped firmly by the flange ring to realize a good sealing.

Many hot or cold forming techniques are applicable in producing die stamped or butt weld stub ends, like bending, extrusion, molding, and machining. The basic principle for choosing molding techniques is that it should do no harm to the fittings. Welding technique is required additionally for some large-caliber stub ends.

Quality Commitment
To ensure high product quality, Yuanyang has established an advanced testing center, which is consisted of several laboratories for specific detection activities. All of the production data and records are stored in an orderly way in the archive so we can check all of the information about any orders we have finished. The unqualified raw materials will be destroyed in no time.

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