ASME B16.5 Threaded Flange China Factory and Professional Suppliers

Looking for high-quality ASME B16.5 threaded flanges? Our China factory provides weld-free pipe fittings for water, oil, and gas systems. As leading suppliers, we offer reliable sealing, easy installation, and cost-effective solutions for moderate pressure environments.

SupplierCangzhou Weihuan Pipeline Equipment Co.,Ltd.www.weihuantube.com

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About this product

Product information from the supplier.

The Threaded Flange (ASME B16.5) is a high-precision pipe fitting engineered for seamless integration through a mechanical screwing mechanism. By pairing internal flange threads with external pipe threads, this solution eliminates the need for welding, making it an indispensable component for pipeline systems that require frequent disassembly, routine maintenance, or rapid deployment in moderate pressure environments.

Constructed with a robust flange disc, precision-machined sealing faces, and strategically placed bolt holes, our threaded flanges ensure leak-proof performance and exceptional cost-effectiveness. Whether transporting water, oil, or gas, these fittings provide a reliable connection that maintains structural integrity while offering the flexibility needed for complex industrial configurations.

Detailed Parameters

Design Standard	ASME B16.5 Pipe Flanges & Fittings	Pressure Ratings	Class 150, 300, 600, 900, 1500, 2500
Size Range	1/2" (DN15) to 24" (DN600)	Thread Standard	NPT (Tapered) / NPSM (Straight)
Materials	Carbon Steel (A105), Stainless Steel (304, 316), Alloy Steel	Temperature Range	-29℃ to +650℃ (Material dependent)
Sealing Faces	Raised Face (RF), Flat Face (FF), Male-Female (MFM)	Thread Precision	ANSI/ASME B1.20.1 / B1.20.3
Surface Treatment	Hot-dip Galvanized, Painted, Pickled, or Mirror-polished	Max Pressure	Up to PN42.0MPa (Class 2500)

Key Advantages

Weld-Free Installation

Eliminates the need for expensive welding equipment, removing the risk of heat-induced material degradation.

Rapid Maintenance

Easy to disassemble and reassemble, significantly reducing downtime during system repairs or replacements.

Material Versatility

Highly adaptable to various pipe materials, including non-ferrous and thin-walled pipes, reducing defect risks.

Standardized Fit

Strict adherence to ASME B16.5 ensures 100% interchangeability with valves and other global standard fittings.

Cost Efficiency

Lowers total installation costs by reducing labor hours and specialized equipment requirements.

Reliable Sealing

Precision-cut 60° thread profiles ensure a tight, secure seal for water, oil, and gas transmission.

Product Gallery

Management Platforms

Inventory Control

Real-time tracking of flange sizes and material grades for rapid order fulfillment.

Precision Machining

CNC-controlled threading processes ensuring strict compliance with ASME B1.20.1.

Quality Assurance

Rigorous pressure testing and material certification for every batch produced.

Logistics Network

Global shipping capabilities with specialized packaging for heavy structural metal parts.

Custom Engineering

Tailored specifications for special diameters and unique material requirements.

Surface Treatment

Advanced anti-corrosion coatings including hot-dip galvanization and passivating.

Investment Return Comparison

Comparison Factor	Threaded Flange	Welded Flange
Installation Speed	Ultra-Fast (Screw-in)	Slow (Welding/Cooling)
Labor Costs	Low (General Technician)	High (Certified Welder)
Equipment Cost	Minimal (Basic Tools)	High (Welding Machines)
Maintenance Ease	Excellent (Easy removal)	Difficult (Cutting required)
Initial Setup Time	Immediate	Extended (Prep & Weld)

Frequently Asked Questions

Q: What is the primary difference between NPT and NPSM threads in flanges?

NPT (National Pipe Tapered) threads create a seal through the tapered interference fit of the threads, while NPSM (National Pipe Straight Mechanical) threads are straight and typically require a gasket to achieve a leak-proof seal.

Q: Can threaded flanges be used in high-vibration environments?

Threaded joints are generally more susceptible to loosening under severe vibration. In such cases, we recommend using additional supports or threaded flanges equipped with specific locking/stop devices.

Q: Which material is best for corrosive chemical environments?

For corrosive media, stainless steel (Grade 304 or 316) is highly recommended due to its inherent corrosion resistance. For extreme conditions, alloy steels or specialized surface treatments like passivation should be selected.

Q: What is the maximum pressure rating for ASME B16.5 threaded flanges?

The ratings range from Class 150 to Class 2500. While Class 2500 can handle up to PN42.0MPa, the actual allowable pressure decreases as the operating temperature increases.

Q: Are threaded flanges suitable for high-temperature applications?

Yes, depending on the material. Carbon steel is suitable up to 425℃, stainless steel up to 600℃, and certain alloy steels can withstand even higher temperatures.

Q: Why choose a threaded flange over a welded one for instrumentation pipes?

Instrumentation and sampling pipes often require frequent calibration or replacement. Threaded flanges allow for quick disassembly without damaging the pipe, making maintenance significantly more efficient.