ASME B16.11 Union Supplier

Quality control begins at the raw material stage and continues through every phase of production to ensure that each forged pipe union meets the highest standards of dimensional accuracy, pressure integrity, and durability. All unions are manufactured as per ASME B16.11, BS 3799, and MSS-SP-83 specifications, ensuring consistency with global industrial requirements.

Our quality assurance process includes:

• Positive Material Identification (PMI) for chemical composition verification
• Ultrasonic Testing (UT) and Magnetic Particle Inspection (MPI) for surface and sub-surface defect detection
• Hydrostatic Pressure Testing to verify leak-tightness under working and test pressure ratings
• Dimensional Inspection using calibrated instruments to ensure tight manufacturing tolerances
• Visual and Surface Finish Inspection under controlled lighting conditions under controlled lighting conditions

All forged unions are accompanied by complete documentation and certification, including:

• EN 10204 3.1 Mill Test Certificates
• NACE MR0175 / MR0103 Compliance for sour service applications
• IBR Certification for use in Indian boilers and piping systems (where applicable)
• CE Marking for compliance with European Pressure Equipment Directive (PED)

We prioritize both product integrity and logistical efficiency when it comes to packaging and global delivery of ASME B16.11 Forged Pipe Unions. Our packaging solutions are designed to prevent any risk of mechanical damage, corrosion, or contamination during transit and long-term storage.

Packaging Highlights:

• Small-size forged unions (¼” to 2”) are packed in high-density polyethylene (HDPE) sealed bags or poly-wrapped bundles, ensuring dust-free and moisture-protected handling.
• Larger sizes and heavy unions are placed in custom-built, fumigated wooden crates or plywood boxes, with each item wrapped in anti-corrosive VCI film or oiled kraft paper.
• Heat numbers, material grades, pressure ratings, size, and quantity are clearly labeled on every package for easy traceability.
• For special alloy materials (Duplex, Super Duplex, Inconel, etc.), individual marking and soft foam padding are used to prevent surface abrasion or pitting.
• Export packaging complies with ISPM-15 standards for wooden materials, ensuring customs clearance across all international ports.

Delivery Options:

• We offer FOB, CIF based on customer preference and port of delivery.
• Orders are shipped via sea, air, or courier freight, depending on urgency and volume.
• Our strategic inventory and partner logistics network ensure fast dispatch times, typically ranging from 3 to 15 working days, based on order size and material availability.

We routinely export forged pipe unions to critical sectors such as oil & gas terminals, petrochemical facilities, LNG units, desalination plants, and power generation sites, ensuring on-time delivery and compliance with client-specific packing protocols.

Unions come in different types to accommodate various piping system requirements, installation methods, and pressure classes. At Nutech Overseas, we manufacture and supply the following key types of forged unions to meet diverse industrial needs:

1. Socket Weld Forged Union:

   This type features a socket weld end on both sides, where the pipe is inserted into a recessed area of the fitting and then welded around the joint. Socket weld unions provide excellent structural integrity and leak resistance, making them ideal for high-pressure and high-temperature applications in critical systems such as chemical plants, power generation, and hydraulic lines.

2. Threaded (NPT/BSP) Forged Union:

   Threaded unions use tapered threads (NPT or BSP) on the ends to join pipes without welding. These unions are widely preferred in low to medium pressure systems, especially where ease of assembly and disassembly is important, such as instrumentation lines, water treatment, and compressed air systems. They provide a secure mechanical connection but are limited to pressures defined by the thread and material strength.

3. Combination Unions:

   In some cases, forged unions may have one end threaded and the other socket welded to facilitate connections between different types of pipe joints within the same system, enhancing versatility.

4. Special Material Variants:

   Forged unions are also produced in specialized materials like Duplex & Super Duplex Stainless Steel, Inconel, Alloy Steel, and Copper Nickel to serve corrosive or extreme temperature environments.

Unions are in high demand worldwide, especially in regions with heavy oil and gas, petrochemical, and industrial activities. The major export markets include the United States, where stringent ASME standards are a prerequisite for refinery and pipeline projects. European countries such as Germany, Spain, and the UK rely on high-quality forged unions for their advanced manufacturing and energy sectors.

The Middle East remains a key consumer, with countries like Saudi Arabia, UAE, and Qatar utilizing these fittings extensively in oil exploration, petrochemical plants, and power projects. In Southeast Asia, nations including Singapore, Malaysia, and Indonesia incorporate forged unions in LNG terminals and chemical industries.

African markets such as Nigeria, South Africa, and Egypt are increasingly adopting forged pipe unions for expanding energy and water infrastructure projects. Additionally, Australia and New Zealand use these fittings in mining and offshore operations, while South American countries like Brazil and Argentina rely on them for oil and chemical processing industries.

This global presence reflects the growing preference for durable, high-pressure rated forged unions that comply with international standards and meet rigorous performance criteria.

Forged steel union offer significant benefits in systems where high pressure and temperature resistance are essential. Their robust construction ensures leak-proof joints, even under mechanical stress or thermal expansion. Unlike welded joints, unions can be disassembled without cutting the pipe, which simplifies routine maintenance, inspection, or part replacement. Additionally, they ensure excellent mechanical strength and fatigue resistance due to the forging process, making them ideal for critical installations in refineries, offshore rigs, and chemical plants.

The choice depends on the specific application and pressure rating. Threaded unions are preferred in systems where welding is not feasible or when frequent disassembly is needed, such as in low- to medium-pressure utility lines and instrumentation piping. On the other hand, socket weld unions provide stronger, permanent joints and are better suited for high-pressure and high-temperature applications, like steam pipelines or hydraulic systems. It’s crucial to consider factors such as fluid type, service conditions, pressure class, and code compliance when selecting the appropriate type.