Product Attributes

• Product Type: Stub End
• Connection Type: Butt Weld
• Material: Carbon Steel / Stainless Steel / Alloy Steel
• Type: Long Pattern / Short Pattern
• Standard: ASME B16.9 / ASTM A403 / DIN / EN
• Size Range: DN15–DN1200 (1/2”–48”)
• Thickness: SCH10 / SCH20 / SCH40 / SCH80 / SCH160
• Surface Treatment: Pickled / Sand Blasted / Anti-rust oil
• Application: Lap joint flange connection system

Product Specification

• Size: DN15–DN1200
• Pattern: Long Type / Short Type
• Thickness: SCH10 / SCH20 / SCH40 / SCH80 / SCH160
• Material Grades:
  • ASTM A403 WPB
  • ASTM A403 WP304 / WP304L
  • ASTM A403 WP316 / WP316L
• Standards:
  • ASME B16.9
  • ASTM A403
  • DIN 2615
• End Type: Butt Weld

Product Overview

Stub End is a type of butt weld pipe fitting used together with lap joint flanges to form a flexible and cost-effective pipeline connection system. It is designed to allow easy alignment and rotation of flanges, making installation and maintenance more convenient.

It is widely used in piping systems where frequent disassembly and inspection are required.

Applications

Stub Ends are widely used in:

• Oil and gas pipeline systems
• Petrochemical and refinery plants
• Power generation systems
• Water treatment and supply systems
• HVAC and industrial piping systems
• Marine engineering applications
• Chemical processing industries

Product Features

• Works with lap joint flange systems
• Easy alignment and installation
• High strength butt weld connection
• Suitable for frequent maintenance systems
• Available in long and short pattern types
• Corrosion resistant material options

Material & Standards

Manufactured from high-quality carbon steel, stainless steel, and alloy steel materials. Common grades include ASTM A403 WP304, WP316, and carbon steel ASTM A234.

All products comply with ASME B16.9, ASTM A403, DIN, and EN standards for global engineering compatibility.

Manufacturing Process

Produced through seamless forming or welding processes, followed by precision machining and surface treatment to ensure dimensional accuracy, welding strength, and corrosion resistance.

Each product is strictly inspected for size tolerance, surface quality, and mechanical performance.

Quality Assurance

• Strict dimensional inspection
• Welding strength verification
• Surface quality control
• Long-term durability testing

After-Sales Service

We provide full technical support including product selection guidance, installation consultation, and engineering application support. Replacement or technical solutions are available in case of quality-related issues.

Company Strength

Hanyang Machinery Technology Co., Ltd. specializes in industrial piping system solutions including steel pipes, fittings, flanges, valves, and sealing products. With strong manufacturing capability and engineering support, we serve global industries with reliable pipeline solutions.