✅ Stainless Steel Butt Weld Lap Joint Stub End – High Performance Stainless Steel Pipe Fittings

SSM supplies premium quality Stainless Steel Butt Weld Lap Joint Stub Ends, designed for flexible flange connections, easy installation, and reliable piping solutions in industrial, sanitary, chemical, marine, and process piping systems.

Manufactured from high-grade 304, 304L, 316, and 316L stainless steel, these lap joint stub ends provide excellent corrosion resistance, superior mechanical strength, and long service life in demanding operating environments. The lap joint design allows the stub end to be used together with a loose backing flange, enabling easy alignment, reduced installation stress, and convenient maintenance for piping systems requiring frequent dismantling.

With precision forming, accurate dimensions, and high-quality surface finishing, Stainless Steel Butt Weld Lap Joint Stub Ends ensure reliable weld connections, excellent sealing performance, and long-term durability in applications requiring corrosion-resistant and flexible flange connection solutions.

✅ Key Features

Product Type:
Stainless Steel Butt Weld Lap Joint Stub End / Stainless Steel LJ Stub End

Material:
Stainless Steel 304 / 304L / 316 / 316L / Duplex Stainless Steel

Standard:
ASME B16.9 / ASTM A403 / MSS SP-43 / DIN / EN / ISO / Custom Standards

Design Type:
Type A / Type B / Type C Lap Joint Stub End (Available Options)

Connection Type:
Butt Weld End + Lap Joint Flange Connection

Facing Type:
Smooth Face / Serrated Face / Customized Facing

Manufacturing Process:
Seamless Forming / Hot Forming / Welding Construction

Surface Finish:
Pickled / Passivated / Polished / Machined Finish

Surface Roughness:
Ra ≤ 0.8 μm or Customized

Size Range:
1/2" – 48" (DN15 – DN1200)
(Custom Sizes Available)

Wall Thickness:
SCH 5S / SCH 10S / SCH 40S / SCH 80S / Customized

⚙️ Advantages

✅ Flexible Flange Connection Design

The lap joint structure works with loose backing flanges, allowing easy pipe alignment and reducing installation difficulties during assembly.

✅ Easy Installation and Maintenance

The stub end can rotate independently from the backing flange, making bolt hole alignment easier and simplifying installation, inspection, and maintenance operations.

✅ Excellent Corrosion Resistance

Manufactured from stainless steel materials, providing outstanding resistance to corrosion, oxidation, chemicals, seawater, and harsh operating environments.

✅ Reduced Installation Stress

The lap joint design helps minimize stress on piping systems, making it suitable for applications involving thermal expansion, frequent maintenance, or system movement.

✅ Reliable Butt Weld Connection

The butt weld end provides a strong and permanent connection with excellent sealing performance and improved system integrity.

✅ Cost-Effective Flange Solution

Allows the use of more economical carbon steel backing flanges while maintaining stainless steel wetted surfaces for corrosion-resistant applications.

🔧 Typical Material Properties – Stainless Steel 316L

📋 Technical Specifications

✅ Applications

Oil & Gas Industry

Used in pipeline systems, refineries, offshore facilities, and process piping requiring corrosion-resistant flange connections.

Chemical Processing Plants

Suitable for chemical pipelines, reactors, storage systems, and corrosive fluid handling equipment.

Food & Beverage Processing Systems

Applied in sanitary piping networks where stainless steel surfaces and easy maintenance are required.

Pharmaceutical & Biotechnology Equipment

Used in high-purity process systems requiring hygienic connections and excellent corrosion resistance.

Marine Engineering Systems

Suitable for seawater piping, shipbuilding projects, cooling systems, and offshore applications.

Water Treatment & Desalination Systems

Used in filtration plants, purification systems, and high-corrosion water pipelines.

Industrial Process Piping

Applied in steam, oil, gas, liquid, and general industrial fluid transportation systems.

✅ Why Choose SSM

Over 30 years of experience in stainless steel pipe fittings manufacturing

Professional production according to ASME, ASTM, DIN, and ISO international standards

Complete material traceability with MTC / EN10204 3.1 certification

Supply of SS304, SS304L, SS316, SS316L, duplex stainless steel, and special alloy materials

Advanced forming, welding, machining, and surface treatment capabilities

Customized sizes, wall thicknesses, facing types, and connection configurations available

Strict quality control ensures dimensional accuracy and reliable performance

Reliable global supply capability with professional technical support

📩 Request A Quote

SSM can supply Stainless Steel Butt Weld Lap Joint Stub Ends in various sizes, materials, wall thicknesses, types, and surface finishes to meet industrial, sanitary, and high-performance piping requirements.

Contact SSM today for pricing, technical datasheets, material certificates, and worldwide shipping solutions.