Butt Weld Fittings, Lap Joint Stub End, ASTM B366 UNS N10675 Hastelloy B-3 ASME B16.9 Steel Pipe Fittings

YUHONG GROUP is professional for Duplex and Suer Duplex pipe/tube/fitting/flange for many projects . Every we export around 4M usd of duplex and suer duplex fitting and flange for more than 30 countries .

Stub Ends are Fittings used in place of welded flanges where rotating back up flanges are desired. They are also called Lap Joints and Vanstone Flared Laps. A rotating back up flange seats itself against the back surface of the Stub End. When bolts are added, the clamping action of the bolts presses the rotating back up flange against the back of the Stub End. The gasket surface of the Stub End then presses against a gasket and another gasket surface providing joints like standard flange joints. The seal is made by the gasket surface of the stub end alone, the flange only provides the clamping pressure on the joint.
Our high quality stub ends (Butt weld fittings) are tested and verified for durability, accuracy and precision. The stub ends are manufactured in all standard dimensions. The stub ends are provided with a standard weld bevel and can be available in squared, flanged, victaulic and threaded ends. We offer stub ends at highly competitive prices.

Material: WP304, WP304L, WP316, 321, 321H, UNS S31803, UNS S32750, N06600, N10675.
Size: 1/2" - 24"
Types: Seamless / ERW / Welded / Fabricated /Forged
Manufacturing standard: ASME/ANSI B16.9, JIS, DIN, EN, API 5L, etc.
Surface treatment: Shot blasted

Stub ends ANSI B 16.9 Stub Ends are fittings used in place of welded flanges where rotating back up flanges are desired. They are also called Lap Joints and Vanstone Flared Laps. A rotating back up flange seats itself against the back surface of the Stub End. When bolts are added, the clamping action of the bolts presses the rotating back up flange against the back of the Stub End. The gasket surface of the Stub End then presses against a gasket and another gasket surface providing joints like standard flange joints. The seal is made by the gasket surface of the stub end alone, the flange only provides the clamping pressure on the joint. Our high quality stub ends (Butt weld fittings) are tested and verified for durability, accuracy and precision. The stub ends are manufactured in all standard dimensions. The stub ends are provided with a standard weld bevel and can be available in squared, flanged, victaulic and threaded ends. We offer stub ends at highly competitive prices.

Seamless & Welded Butt-weld fittings in Titanium Grades 1, 2, 5, 7, 9 and 12
Seamless & Welded Butt-weld fittings in Duplex UNS S31803 & S32205
Seamless & Welded Butt-weld fittings in Super Duplex UNS S32750 & S32760
Seamless & Welded Butt-weld fittings in 6 Moly UNS S31254, N08925 & N08926
Seamless & Welded Butt-weld fittings in Copper Nickel UNS C70600 C70620 C7060X C7150 C71520 C71640

Value Added Services

• Hot Dip Galvanizing
• Epoxy Coating

Test Certificate
Mill Test Certificate as per EN 10204 / 3.1B

Lap Joint Stub end