ASME B16.9 Stub End
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ASME B16.9 Stub End
ASME B16.9 Stub End Manufacturer & Supplier
ASME B16.9 Stub End is a factory-made butt weld pipe fitting manufactured in accordance with the ASME B16.9 standard. It is designed to be used with a lap joint flange to create a detachable piping connection, making installation, maintenance, and inspection easier. Stub ends are widely used in piping systems where frequent dismantling, alignment, or flange rotation is required.
The ASME B16.9 standard specifies the dimensions, tolerances, manufacturing, marking, materials, inspection, and testing requirements for wrought butt welding fittings. Our ASME B16.9 stub ends are manufactured using premium-quality raw materials and advanced forming techniques to ensure excellent dimensional accuracy, superior mechanical strength, corrosion resistance, and long service life.
Available in various sizes, schedules, and material grades, our ASME B16.9 stub ends are widely used in oil & gas, petrochemical, chemical processing, power generation, offshore, marine, pharmaceutical, food processing, water treatment, and other industrial piping systems.
ASME B16.9 Stub End Specifications
ASME B16.9 Stub End Dimensions
ASME B16.9 stub ends are manufactured according to the dimensional requirements specified by the ASME B16.9 standard. They are available in Long Pattern and Short Pattern designs to suit different piping applications and lap joint flange assemblies.
Dimension charts generally include:
- Nominal Pipe Size (NPS)
- Outside Diameter (OD)
- Lap Diameter
- Overall Length
- Wall Thickness
- Weight
- Pipe Schedule
Detailed dimension tables and engineering drawings are available upon request.
Available Material Grades
Our ASME B16.9 stub ends are available in a wide range of material grades.
Carbon Steel
- ASTM A234 WPB
- ASTM A234 WPC
Low Temperature Carbon Steel
- ASTM A420 WPL6
Stainless Steel
- ASTM A403 WP304
- ASTM A403 WP304L
- ASTM A403 WP316
- ASTM A403 WP316L
- ASTM A403 WP321
- ASTM A403 WP347
Alloy Steel
- ASTM A234 WP5
- ASTM A234 WP9
- ASTM A234 WP11
- ASTM A234 WP22
- ASTM A234 WP91
Duplex Stainless Steel
- ASTM A815 UNS S31803
- ASTM A815 UNS S32205
Super Duplex Stainless Steel
- ASTM A815 UNS S32750
- ASTM A815 UNS S32760
Nickel Alloys
- Inconel
- Monel
- Hastelloy
- Incoloy
- Nickel 200
- Nickel 201
Available Types
We manufacture and supply a complete range of ASME B16.9 stub ends, including:
- Long Pattern Stub End
- Short Pattern Stub End
- Seamless Stub End
- Welded Stub End
Key Features
- Manufactured according to ASME B16.9 standard
- Designed for use with lap joint flanges
- Allows easy pipe alignment and flange rotation
- Factory-made butt weld construction
- Excellent corrosion resistance
- High mechanical strength
- Precision-manufactured dimensions
- Suitable for high-pressure and high-temperature service
- Long service life with minimal maintenance
Inspection & Testing
Every ASME B16.9 stub end undergoes comprehensive quality inspection before dispatch. Testing includes:
- Positive Material Identification (PMI)
- Visual Inspection
- Dimensional Inspection
- Hydrostatic Testing (when required)
- Radiographic Testing (RT)
- Ultrasonic Testing (UT)
- Chemical Analysis
- Mechanical Testing
- Third-Party Inspection
- Material Test Certificate (EN 10204 3.1)
Applications
ASME B16.9 stub ends are widely used in:
- Oil & Gas Industry
- Petrochemical Plants
- Chemical Processing
- Refineries
- Power Generation Plants
- Offshore Platforms
- Marine Industry
- LNG & LPG Plants
- Water Treatment Plants
- Pharmaceutical Industry
- Food & Beverage Processing
- Paper & Pulp Industry
- Fertilizer Plants
- Fire Protection Systems
Standards & Compliance
Our ASME B16.9 stub ends are manufactured in compliance with internationally recognized standards, including:
- ASME B16.9
- ASTM A234
- ASTM A403
- ASTM A420
- ASTM A815
- MSS SP-75 (where applicable)
- EN 10204 3.1 Certification
- ISO Quality Standards (where applicable)
Packaging & Shipping
To ensure safe transportation and delivery, our ASME B16.9 stub ends are packed using export-quality packaging.
- Wooden Boxes
- Plywood Boxes
- Corrugated Cartons
- Bubble Wrap Protection
- Sea Worthy Export Packing
- Customer-Specific Packaging Available
Why Choose Our ASME B16.9 Stub Ends?
We manufacture and supply premium-quality ASME B16.9 stub ends using certified raw materials and advanced manufacturing processes. Every stub end is precision-formed, machined, inspected, and tested to ensure excellent dimensional accuracy, leak-proof performance, and long-term reliability.
With competitive pricing, strict quality assurance, worldwide shipping, and customized manufacturing capabilities, we provide dependable butt weld fittings for industrial piping projects across the globe.
Frequently Asked Questions
What is an ASME B16.9 Stub End?
An ASME B16.9 stub end is a butt weld fitting that is used with a lap joint flange to create a detachable piping connection for easy installation and maintenance.
What are the types of stub ends?
The most common types are Long Pattern Stub Ends and Short Pattern Stub Ends.
Which flange is used with a stub end?
Stub ends are designed to be used with Lap Joint Flanges.
Which material grades are available?
We manufacture stub ends in Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Low Temperature Carbon Steel, and Nickel Alloy materials.
Which industries use ASME B16.9 Stub Ends?
They are widely used in oil & gas, petrochemical, chemical processing, marine, offshore, pharmaceutical, food processing, water treatment, and power generation industries.
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