A234 WPB Stub End

We are manufacturer of Carbon Steel Stub End and providing 3 Inch Sch40 Stub End BW ASTM A234 WPB ASME B16.9 for Mauritius.

Stub end are buttweld fittings which are usually used lap joint flanges or slip on flanges. It can be alternatively to welding neck flanges to make flanged connections.

The use of stub ends has two advantages: it can reduce the total cost of flanged joints for pipe system in high material grades, as well as speeds up the installation process, as the lap joint flange can be rotated to facilitate the alignment of the bolt holes.

Stub End Types

1. Type A stub end: Used with lap joint flanges The lap thickness on the stub end is greater than or equal to the nominal thickness of pipe’s. Lap Joint Stub End usually has a machined serrated face.
2. Type B stub end: Used with slip on flanges. The inner corner is square. It also has a machined serrated face.
3. C Type : Used for both lap joint flanges and slip on flanges. Its thickness is 75% of the pipe wall. Type C stub end is very short to accommodate backup flanges

Type A, B and C stub end all have short pattern and long pattern, the differences between short pattern stub ends and long pattern stub ends are

• Short pattern: MSS-A stub end.
• Long pattern stub end: ASA-A stub end or ANSI length stub end.

A234 WPB Stub End

Features of A234 WPB Stub End

Size: 3 Inch

End Type: BW

Material: A234 WPB

Standard: ASME B16.9

ASTM A234 WPB Specification

Defination

ASTM A234 covers materials of wrought seamless and welded carbon steel and alloy steel fittings. These fittings can be used in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. WPB is a very common used carbon steel grade.

Chemical Composition of Gr. WPB Stub End

 Mechanical Properties Gr. WPB Stub End

Stub End Dimensions

Materials

Stainless Steel Stub End

ASTM A403 WP304/304L/304H, WP316/316L, WP 309, WP310, WP317, WP321, WP347

Carbon Steel Stub End Short Pattern

ASTM A234 WPB, A860 WPHY42, WHPY52, WPHY60, WHPY65, WPHY70, A420 WPL 3 / 6 / 9.

Alloy Steel Stub End Long Pattern

ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91

Duplex Stainless Steel Buttweld Pipe Fittings

ASTM A815 UNS S 31803, 32205, 32550, 32750, 32760

Buttweld Pipe Fittings Manufacturer

Product Ranges

45°/ 90°/ 180° Elbow, Equal Tee and Reducing Tee, Concentric Reducer and Eccentric Reducer, Pipe Cap, Lap Joint Stub End, Weldolet.

Quality Control

Apply In-factory Inspection and Third Party Inspection. The inspection covers the surface, marking, dimensions, materials of pipe fittings, and supply various certifications for the products.

• Third parties such as BV, SGS, LR, DNV, ABS.
• Certifications: CE, ISO, Mill Test Certificate.

Package

• Anti-rust Oil
• Plastic Bag
• Wooden Box or Pallet.