Super Duplex Hex Plug Delivery by Haihao Group for High-Pressure Piping Systems

Haihao Group has successfully completed the production and shipment of high-performance hex plug products designed for demanding industrial piping systems. This delivery demonstrates our expertise in manufacturing precision threaded fittings using advanced materials and strict quality control standards.

Each hex plug is engineered to provide reliable sealing performance, excellent corrosion resistance, and long service life in harsh environments.

Project Overview

This order includes premium hex plug fittings manufactured in accordance with ASME standards and produced from super duplex stainless steel for superior strength and corrosion resistance.

Product Specifications:

• Product Name: Hex Plug
• Size: 1″ NB
• Pressure Rating: Class 3000
• Standard: ASME B16.11
• Material: ASTM A182 F53 (UNS S32750)
• Surface: Uncoated
• Marking: Blue identification dot

This hex plug is designed for secure pipe end closure in high-pressure systems.

Haihao Group ASME B16.11 hex plugs ASTM A182 F53 UNS S32750

Material Advantage: Super Duplex Stainless Steel S32750

The ASTM A182 F53 material (UNS S32750) is a super duplex stainless steel known for its exceptional performance in aggressive environments.

Key Properties:

• PREN ≥ 40.0 for outstanding pitting corrosion resistance
• Nitrogen Content ≥ 0.20% for enhanced strength
• Ferrite Content: 40–60% for optimal phase balance
• Low Temperature Impact Test: -50°C
• Impact Value: Average 45J, minimum 35J

These features ensure that every hex plug performs reliably under high pressure, corrosive media, and low-temperature conditions.

Manufacturing and Heat Treatment

Each hex plug undergoes controlled heat treatment to achieve the required metallurgical structure and mechanical properties. Protective caps are applied to ensure thread protection during transportation.

Strict process control guarantees:

• Balanced microstructure
• Stable mechanical performance
• Enhanced durability in service

Comprehensive Inspection and Testing

Haihao Group provides complete quality documentation for every hex plug, ensuring full traceability and compliance with project requirements.

Inspection and Test Reports Include:

• Chemical composition analysis
• Tensile test report
• Impact test report
• Hardness test report
• PMI (Positive Material Identification)
• Heat treatment report
• Ferrite content and metallographic analysis
• Pitting corrosion test
• Non-destructive testing (PT, UT)

Each hex plug is thoroughly inspected before shipment to ensure safety and performance.

Why Choose a Hex Plug?

A hex plug is a threaded fitting used to seal the end of a pipeline or fitting. Its hexagonal head allows easy installation and removal using standard tools.

Key Benefits:

• Reliable sealing performance
• High pressure resistance
• Easy installation and maintenance
• Suitable for harsh and corrosive environments

These advantages make the hex plug an essential component in industrial piping systems.

Applications

The hex plug is widely used in:

• Oil & gas pipeline systems
• Petrochemical plants
• Offshore engineering
• Chemical processing industries

Its durability and corrosion resistance make the hex plug ideal for critical service conditions.

This successful shipment highlights Haihao Group’s capability to deliver high-quality hex plug solutions made from super duplex stainless steel. With strict quality control, advanced manufacturing, and comprehensive testing, we continue to provide reliable piping components for global industries.

If you are looking for a trusted supplier of hex plug, Haihao Group is your dependable partner.

If you’d like to learn more about size standards for pipe fittings, flanges, and steel pipes, please click here.