Service Metal
304 Stainless Steel MSS SP-43 Type A Butt Weld Stub End – Sch 10
- Availability:
- Allow 1-2 Days to Ship
- Weight:
- 0.00 LBS
Description
304 Stainless Steel MSS SP-43 Type A Butt Weld Stub End – Sch 10
304/L Stainless Steel Schedule 10S Butt Weld Stub Ends are manufactured from ASTM A/SA403 WP304/L stainless steel and conform to MSS SP-43 Type A dimensional requirements. Designed for use with lap joint flanges, these fittings provide a corrosion-resistant sealing surface while allowing the mating flange to rotate for easier bolt-hole alignment during installation.
Available in sizes from 1/2" through 12", these stub ends are suitable for sanitary, food processing, chemical, water treatment, commercial, and industrial piping systems where corrosion resistance, serviceability, and dependable welded connections are required.
Product Highlights
- ASTM A/SA403 WP304/L stainless steel construction
- Schedule 10S wall thickness
- Butt weld (BW) connection
- MSS SP-43 Type A long pattern design
- Designed for use with lap joint flanges
- Allows flange rotation for easier bolt-hole alignment
- Excellent corrosion resistance and weldability
- Smooth machined sealing face
- Available in sizes from 1/2" through 12"
- Suitable for sanitary, commercial, industrial, and process piping systems
Technical Specifications
| Product Type | Butt Weld Stub End |
|---|---|
| Material | 304/L Stainless Steel |
| Material Specification | ASTM A/SA403 WP304/L |
| Pipe Schedule | Schedule 10S |
| Connection Type | Butt Weld (BW) |
| Stub End Type | MSS SP-43 Type A |
| Pattern | Long Pattern |
| Flange Compatibility | Designed for use with compatible lap joint flanges |
| Available Sizes | 1/2" through 12" |
| Applications | Sanitary, food processing, chemical, water treatment, commercial, industrial, and process piping systems |
Construction Details
304/L Stainless Steel
Manufactured from dual-certified 304/L stainless steel for excellent corrosion resistance, dependable weldability, strength, and long service life.
Type A Lap Design
The Type A stub end incorporates a precision-machined lap designed to seat against a compatible lap joint flange while providing a reliable sealing surface.
Schedule 10S Compatibility
Schedule 10S wall thickness provides compatibility with corresponding Schedule 10S stainless steel pipe and compatible butt weld piping components.
Material & Stub End Design
Material Construction
- 304/L stainless steel
- ASTM A/SA403 WP304/L specification
- Excellent corrosion resistance
- Dependable weldability
- Durable construction for process piping service
Type A Stub End Configuration
- MSS SP-43 Type A design
- Long pattern configuration
- Butt weld pipe connection
- Machined lap sealing surface
- Designed for lap joint flange assemblies
- Schedule 10S wall thickness
Why Use a Stub End with a Lap Joint Flange?
A stub end is welded directly to the pipe while the lap joint flange remains free to rotate behind the stub end lap. This configuration can simplify flange bolt-hole alignment during assembly and provides access to the flange without requiring the flange itself to be welded directly to the pipe.
Available Sizes
These Schedule 10S stainless steel Type A butt weld stub ends are available in nominal pipe sizes from 1/2" through 12". Select the stub end size that corresponds with the nominal diameter of the Schedule 10S stainless steel pipe and compatible lap joint flange being installed.
Typical Applications
Sanitary & Process
- Sanitary piping systems
- Food processing systems
- Chemical processing piping
- Water treatment systems
Commercial & Industrial
- Commercial piping systems
- Industrial process piping
- Manufacturing facilities
- Stainless steel piping assemblies using lap joint flanges
Pipe Size Reference
Need help confirming nominal pipe diameter or wall thickness before ordering? Use our common pipe diameter and wall thickness reference chart to verify your required Schedule 10S pipe size.
Product Documents
Service Metal Schedule 10S Stub End Spec Sheet
Review the product specification sheet for dimensions and additional manufacturer information for Schedule 10S stainless steel butt weld stub ends.
Certificate of Conformance
Review the available Certificate of Conformance documentation for applicable product and material information.
Need Help Selecting the Correct Stub End?
Our industrial PVF specialists can help confirm your required pipe size, schedule, material, stub end type, and compatible lap joint flange before you order.
Frequently Asked Questions
What is a butt weld stub end used for?
A butt weld stub end is welded to the end of a pipe and used with a lap joint flange to create a flanged piping connection.
What material are these stub ends made from?
These stub ends are manufactured from ASTM A/SA403 WP304/L stainless steel.
What pipe schedule are these stub ends designed for?
These fittings are designed for Schedule 10S stainless steel piping systems.
What does MSS SP-43 Type A mean?
These stub ends conform to MSS SP-43 Type A dimensional requirements and use a long pattern configuration designed for lap joint flange assemblies.
Why is a lap joint flange used with a stub end?
The stub end provides the sealing surface while the lap joint flange remains free to rotate behind it, which can make bolt-hole alignment easier during assembly.
What connection type is used?
The pipe end of the stub end uses a butt weld connection for permanent installation with compatible Schedule 10S stainless steel pipe.
What sizes are available?
These Schedule 10S Type A butt weld stub ends are available in nominal pipe sizes from 1/2" through 12".
How do I select the correct stub end?
Select the nominal stub end size that matches the Schedule 10S stainless steel pipe and confirm compatibility with the lap joint flange being used in the assembly.
Important Ordering & Installation Notes
- Select the nominal stub end size that matches the Schedule 10S stainless steel pipe being installed.
- Available nominal sizes range from 1/2" through 12".
- Material: ASTM A/SA403 WP304/L stainless steel.
- Pipe schedule: Schedule 10S.
- Configuration: MSS SP-43 Type A long pattern stub end.
- Connection: Butt weld (BW).
- Designed for installation with compatible lap joint flanges.
- Verify stub end and lap joint flange compatibility before ordering.
- Professional welding and accepted installation procedures should be followed to maintain system integrity.
- Verify nominal size, wall thickness, material compatibility, pressure requirements, and application conditions before installation.
