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TOBO STEEL GROUP CHINA
TOBO GROUP TOBO International Trading(Shanghia)Co.,Ltd Tianda Oil Pipe Co., Ltd TOBO Pipeline Equipment Co.,Ltd TPCO & TISCO Pipe(Tianjin)Co.,Ltd.
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Long Type Lap Joint Stub End Fittings Easy Disassembly

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Long Type Lap Joint Stub End Fittings Easy Disassembly

Application : Pump and Valve Connections

Supply Ability : 30,000 Pieces per Month

Size Range : 1/2 Inch to 24 Inch

Place of Origin : China

Wall Thickness : Sch5S to Sch160

Delivery Time : 10-30 days depending on quantity

Payment Terms : L/C,T/T,Western Union

Material Grade : SS304, SS316L

MOQ : 1 Piece

Price : USD 3-50 / Piece (Depends on material and size)

Packaging Details : Plywood cases or wooden pallets with waterproof wrapping, export standard

Standard : ASME B16.9, MSS SP-43

Model Number : SS-STUBEND-LONG

Product Name : Long Type Lap Joint Stub End Fittings

Certification : ISO 9001:2015, SGS, BV

Type : Long Type (ANSI Long Pattern)

Brand Name : Tobo

Maintenance : Easy Disassembly and Reassembly

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Long Type Lap Joint Stub End Fittings Easy Disassembly
Product Overview
The Long Type Lap Joint Stub End Fittings are specially designed for piping systems that require frequent maintenance and equipment access. The long pattern body provides extended reach for the lap joint flange, allowing the flange to slide freely along the pipe and making disassembly of pumps, valves and other inline equipment quick and simple.
Manufactured to ASME B16.9 and MSS SP-43 standards, these long type stub ends are available in SS304 and SS316L stainless steel. The key advantage of the lap joint design is that the flange is not welded to the pipe, so rotating or removing the flange does not disturb the welded joint. This easy disassembly feature dramatically reduces maintenance downtime and labor cost in chemical plants, water treatment facilities and process industries where equipment must be serviced regularly.
Specifications
Standard ASME B16.9, MSS SP-43
Type Long Type (ANSI Long Pattern)
Material Grade SS304, SS316L
Size Range 1/2 Inch to 24 Inch
Wall Thickness Sch5S to Sch160
Connection Type Butt Weld to Pipe, Lap Joint to Flange
Surface Treatment Pickling, Passivation
Certification ISO 9001:2015
Key Features
  • Long type design allows flange rotation and easy alignment during installation
  • Easy disassembly of pumps, valves and instruments without cutting the pipe
  • Flange freely rotates around the stub end for simplified bolt hole alignment
  • Reduces maintenance downtime and lowers total cost of ownership
  • Butt weld connection provides a permanent, leak free pipe joint
  • Precision machined surface ensures smooth flange seating
  • Ideal for systems requiring periodic cleaning and inspection
Applications
  • Pump suction and discharge connections
  • Valve and instrument removal points
  • Heat exchanger and vessel nozzles
  • Water treatment and desalination plants
  • Chemical processing lines requiring frequent maintenance
Quality Assurance
Our long type lap joint stub end fittings are produced with strict dimensional control to ensure the flange seating area and weld preparation meet ASME B16.9 requirements. Each fitting is inspected for length tolerance, wall thickness and surface quality before packing. The production facility operates under ISO 9001:2015, and every shipment can be accompanied by mill test certificates, inspection reports and third party verification. Our team has supplied easy disassembly piping solutions to maintenance intensive industries for over 15 years, helping customers reduce downtime and improve operational efficiency.
Frequently Asked Questions
Q1: How does the long type stub end make disassembly easier?
A: With a long type lap joint stub end, the flange is not welded to the fitting, so it can slide back along the pipe. When you need to remove a pump or valve, simply loosen the flange bolts and slide the flange away, no pipe cutting is needed.
Q2: What is the difference between long type and short type?
A: The long type has a longer hub that extends further from the flange face, providing more space for flange movement and bolt access. Short type is more compact and is used where space is limited or the pipe end is close to the equipment.
Q3: Can the flange be rotated after welding?
A: Yes. Because the lap joint flange is not welded to the stub end, it can rotate freely around the fitting even after the stub end is welded to the pipe. This makes bolt hole alignment very convenient.
Q4: Are these fittings suitable for food processing environments?
A: Yes, SS316L long type stub ends with passivated surfaces are suitable for food and beverage processing. They allow easy disassembly for cleaning and inspection, which is essential for hygienic applications.

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Lap Joint Flange Stub End

      
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