Haihao Group Delivers ASME B16.5 Carbon Steel Flanges to Singapore

Haihao Group recently completed the delivery of carbon steel flanges for a customer in Singapore. The shipment included a range of weld neck (WN) flanges and socket weld flanges, manufactured in accordance with ASME B16.5, widely used in industrial piping systems.

These flanges are designed for stable pressure performance, reliable sealing, and long-term service, meeting the requirements of general industrial and energy-related projects.

Supplied Flange Details

The order covered multiple sizes and flange types to match different pipeline connections.

Key specifications include:

• Flange types:
  • Weld Neck (WN) Flange, RF
  • Socket Weld Flange, RF
• Standard: ASME B16.5
• Material: ASTM A105N carbon steel
• Pressure class: Class 150 (150#)
• Sizes supplied: 2″, 3″, 4″, 8″, 14″, and 20″
• Pipe schedules: SCH 40 / STD, SCH 80 / XS

All products were produced with raised face (RF) sealing surfaces to ensure proper gasket performance.

ASME B16.5 A105N carbon steel weld neck flanges manufactured by Haihao Group for Singapore customer

Material Selection: ASTM A105N Carbon Steel

ASTM A105N is one of the most commonly used carbon steel materials for forged flanges due to its:

• Good mechanical strength and toughness
• Stable performance under moderate pressure and temperature
• Excellent machinability and weldability
• Wide acceptance in international pipeline standards

These advantages make A105N flanges ideal for pipelines carrying water, oil, gas, and other non-corrosive or mildly corrosive media.

Application Scenarios

ASME B16.5 A105N flanges are widely used in:

• Oil and gas pipelines
• Petrochemical and chemical plants
• Power generation systems
• Industrial piping and utility lines

Both weld neck flanges and socket weld flanges are commonly selected to ensure strong joints and reliable sealing in Class 150 piping systems.

Quality Control and Manufacturing

Haihao Group applies strict quality control throughout production, including:

• Raw material inspection and traceability
• Dimensional checks in accordance with ASME B16.5
• Pressure class and schedule verification
• Final visual inspection before packing and shipment

This ensures that every flange delivered meets project specifications and customer expectations.

Your Reliable ASME B16.5 Flange Supplier

With extensive experience supplying carbon steel, stainless steel, duplex, and alloy steel flanges, Haihao Group supports customers worldwide with standard and customized piping solutions.

From small-diameter socket weld flanges to large-size weld neck flanges, we provide consistent quality, competitive lead times, and professional technical support.