Female Threaded Flange

 

The female threaded flange is a type of flange that allows for quick connection of pipes via internal threads. It is suitable for low-pressure, weld-free applications, is easy to install, and provides a reliable seal. It is widely used in water treatment, fire protection, and chemical systems.

 

 

Raw Materials: High-quality carbon steel or stainless steel conforming to ASTM/ASME standards.

 

Forging/Casting: Forming a dense blank to improve strength and stability.

 

Machining: CNC machining of threads, sealing surfaces, and holes to ensure consistency.

 

Inspection: Dimensional inspection + thread gauge inspection + PMI material analysis (pressure/NDT optional).

 

 

Specifications: DN15–DN300 (ASME/EN/DIN/JIS)

 

Material: CS / SS304 / SS316 / SS316L

 

Threads: NPT, BSPP, BSPT, G Thread

 

Surface Finishes: Rust-preventive oil, galvanized, painted, inkjet printed

 

Packaging: Carton, pallet, wooden crate

 

 

Threaded protective caps + rust-preventive oil treatment

 

Flange compartmentalized packaging, impact-resistant reinforcement

 

Heavy-duty flanges use reinforced wooden crates and steel straps

 

Supports sea/air/LCL shipping, container loading photos available

 

 

20+ years of experience in flange manufacturing, specializing in threaded flanges and stainless steel precision machining.

 

End-to-end CNC machining ensures high thread consistency with a pass rate of ≥99.5%.

 

Materials conform to ASTM/ASME standards and are equipped with PMI, thread gauges, and UT/RT testing equipment.

 

Supports customization for multiple standards including ASME/EN/DIN/JIS, with stable and controllable lead times for bulk orders.

 

Exports to over 60 countries, with a high repurchase rate from wholesale customers.

 

 

Advantages	Technological breakthrough	Engineering benefits
Millimeter-level space conquest	Flange inner cavity thread design · Axial length reduced by 60% · No protruding structure	Save 70% installation space in the equipment compartment
90-second blind mounting lock	360° free screw in · No wrench space required · Done with one hand	Increase installation efficiency in narrow Spaces by 85%
Double seal zero leakage	End face metal gasket + threaded sealant · Certified zero leakage by ISO 5208	Sealing in the full pressure range from 0 to 40MPa
Vibration absolute immunity	Serrated locking thread · ANSYS vibration simulation life ≥ 100,000 times	Compressor/pump room pipeline maintenance costs are reduced by 60%
Cost cuts of a thousand yuan	Eliminating butt flange/bolt assemblies · connectors costs cut by 75%	Instrument piping costs have been optimized by 40%

 

 

1. Core parameter matrix

Parameters	Standard Specifications	Special Customization
Nominal diameter	DN8(1/4")-DN150(6") (Regular stock of 304/316L)	DN200-DN300 extra-large caliber
Pressure rating	Class 150 | 300 | 600	Class 900 High voltage
Thread type	NPT (American standard 60° cone thread) | BSPT (British Standard 55° cone thread) | Metric G thread	Wyeth 55° trapezoidal thread
Sealing surface type	FF Full plane (90%) | RF face (high pressure) | Integrated O-ring groove (Dynamic seal)	Metal C-ring seal

 

2. Detailed explanation of innovative structure

Main structure	Integrally forged · Inner cavity reverse knife turned thread · No welding stress concentration
Sealing system	Double safety mechanism: - End face: Stainless steel toothed gasket - Thread: Anaerobic sealant +PTFE raw tape
Material options	Carbon steel: A105 galvanized · Stainless steel: 316L electrolytically polished · Alloy: Brass H62 · Titanium Alloy GR5
enforce standards	ASME B16.5 | ISO 1179-2 | DIN 3852-2 | JIS B0203

 

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