Threaded Flange

• 

Product Description

1. Product Introduction

Threaded Flanges offer a unique advantage in industrial piping: they can be installed without welding, which eliminates the need for hot-work permits, certified welders, and weld inspection on the flange joint itself. The flange simply screws onto a male-threaded pipe end and is drawn up tight against the pipe face. A back-weld around the hub OD may be specified for higher-pressure or critical service to reinforce the thread joint. The primary limitation of threaded flanges is the thread itself: the stress concentration in the threaded bore and the limited engagement depth mean they are only suitable for lower-pressure service — typically CL300 or below. They are also not suitable for toxic, flammable, or high-pressure gas service where thread leakage would be hazardous. The key applications are in water distribution, compressed air, firewater, and utility systems where the ability to disassemble the joint without cutting the pipe is a significant maintenance advantage. In practice, threaded flanges are most commonly used for pipe sizes 1/2" to 4", as the torque required to make up the joint becomes impractical for larger sizes. The NPT (National Pipe Thread) form is the US standard; BSP (British Standard Pipe) is used in Europe and many export markets.

2. Product Features

- Sizes from 1/2" to 6" NPS — standard threaded connection range

- Pressure ratings up to CL300 (ASME B16.5); PN10/PN16/PN25/PN40 (EN)

- NPT (American) and BSP (European) thread forms available

- Weld-free installation eliminates hot-work permits and certified welding

- Demountable joint allows rapid pipework removal for maintenance

- RF, FF facing options for all standard gasket types

3. Core Specifications

4. Materials

5. Product Standards

- ASME B16.5 — Pipe Flangesand Flanged Fittings (1/2" – 6")

6. Applications

- Water treatment plant and municipal water distribution piping connections

- Firewater ring main and hydrant connections in industrial facilities

- Compressed air distribution in factories and process plants

- Low-pressure steam and condensate return lines in heating systems

- Tank vent and overflow connections in storage tank farms

- Instrument air and plant air header connections in industrial facilities

7. Packaging

8. Customization

BSP and NPT thread combinations for different market requirements, special back-weld preparations for higher-pressure threaded service, and special alloys for seawater or corrosive water service.

For detailed specifications and applications, explore this product page.

Другие товары поставщика

	Slip-On Flange	Product Description 1. Product Introduction The Slip On Flange is one of the simplest and most economical flange types, designed for straightfo...
	Olet Fittings	Product Description 1. Product Introduction An Olet — short for outlet — is a specialized branch outlet fitting engineered to addre...
	Socket Weld Flange	Product Description 1. Product Introduction The Socket Weld Flange is specifically designed for small-bore, high-pressure piping systems where ...
	Steel Pipe Bend Manufacturer | 3D, 5D & 10D Bends	Product Description 1. Product Introduction Unlike standard elbows which are manufactured from pipe or forgings in fixed angle increments, bend...
	Oil and Gas Pipe Fittings	Industry Overview Refined petroleum products—including gasoline, diesel, jet fuel, and fuel oil—are distributed through extensive pi...

Похожие товары

	Oil and Gas Pipe Fittings	Продавец: Hebei Longrun Pipeline Group CO., Ltd	Industry Overview Refined petroleum products—including gasoline, diesel, jet fuel, and f...
	Spectacle Blind Flange	Продавец: Hebei Longrun Pipeline Group CO., Ltd	Product Description 1. Product Introduction The Spectacle Blind Flange is named for its shape...
	Blind Flange	Продавец: Hebei Longrun Pipeline Group CO., Ltd	Product Description 1. Product Introduction A Blind Flange is a flange with no bore — a...
	Threaded Flange	Продавец: Hebei Longrun Pipeline Group CO., Ltd	Product Description 1. Product Introduction Threaded Flanges offer a unique advantage in indu...
	Socket Weld Flange	Продавец: Hebei Longrun Pipeline Group CO., Ltd	Product Description 1. Product Introduction The Socket Weld Flange is specifically designed f...