Malleable iron Flange Fig 329 A197 NPT with holes ASTM

Product Overview

This malleable iron Flange Fig 329 A197 NPT with holes is manufactured in accordance with ASTM standards. It is used for bolt connection between pipelines and valves or equipment, with convenient disassembly and good sealing performance. Made of high-quality black heart malleable iron with high-temperature annealing, it features good toughness, high strength and impact resistance. With high-precision threads for tight and reliable sealing, it is available in black, electro-galvanized or hot-dip galvanized finish. Corrosion-resistant and easy to install, it is widely used in water, gas, steam, fire protection and various low-pressure industrial fluid piping systems.

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Product details

Malleable iron flange with holes is a crucial component in various industrial, commercial, and residential applications.

Product Features (Specifications – Plain English List)

Standard: ASTM A197
Type: Flange Fig 329 A197 NPTwith holes
Material: Black Heart Malleable Iron
Pressure Class: 150LB / 300LB
Temperature Range: -20℃ ~ 230℃
Thread Standard: NPT / BSP
Surface Treatment: Black / Electro-galvanized / Hot-dip Galvanized
Applicable Media: Water, hot water, oil, gas, compressed air, fire water, low-pressure steam

Specifications Table (Dimensions & Parameters)

Size	Inch	1/4	3/8	1/2	3/4	1	11/4
	mm	8	10	15	20	25	32
Dim.	A Min	12	14	14	16	17	19
(mm)
Size	Inch	11/2	2	21/2	3	4
	mm	40	50	65	80	100
Dim.	A Min	22	25	26.2	27.3	30.5
(mm)

Product Applications

Fire Protection Systems: Flange Fig 329 A197 NPTconnection between sprinkler networks and valves or equipment
Water Supply & Drainage: Flange Fig 329 A197 NPTfixing between building pipelines and water pumps or water meters
HVAC & Heating: Flange Fig 329 A197 NPTconnection for boiler and radiator system pipelines
Industrial Pipelines: Equipment connection for compressed air and low-pressure steam pipelines
Gas Engineering: Connection between gas pipelines and valves or pressure regulating equipment
Marine & Mining: Flange Fig 329 A197 NPTfixing systems for general low-pressure fluid pipelines

Installation and Maintenance

Installation

Inspect the Flange Fig 329 A197 NPTbefore installation to ensure no sand holes, cracks, deformation and intact threads and sealing surface
Clean impurities at pipe ends, Flange Fig 329 A197 NPTsealing surfaces and bolt holes to ensure clean connection
Wind PTFE tape clockwise or apply pipe thread sealant on male threads
Install the Flange Fig 329 A197 NPTon the pipeline, align the mating Flange Fig 329 A197 NPT and tighten bolts evenly
Pressure test after installation; put into use only after confirming no leakage and looseness

Maintenance

Regularly check Flange Fig 329 A197 NPTseals for leakage, loose bolts and surface corrosion
Paint anti-rust paint regularly in outdoor or humid environments to extend service life
Replace immediately in case of cracks, deformation, seal failure or serious corrosion

FAQ

Can you supply OEM?

OEM is available. We can customize the product according to your specific requirements, including logo printing and packaging design.

What’s the MOQ?

The MOQ is 500 pieces. For customized products with special sizes or surface treatments, the MOQ may vary.

How about the order processing and lead time?

After order confirmation and receipt of the advance payment, we will arrange production. Generally, the products can be ready for shipment within 15-20 working days. Once dispatched, we will notify you and provide all necessary documents for customs clearance.

What quality will be ensured?

All products are 100% new and undergo strict quality inspections, including pressure testing and dimensional checks, before delivery. We use sturdy wooden crates or cartons to ensure the products are well-protected during transportation.

Can you guide the installation?

Yes, we provide detailed installation instructions in English and other major languages. Our technical support team is also available for online consultation and guidance if needed.

Contact Information

Sales Inquiry:
Provide contact information for sales inquiries.

Email: [email protected]

Phone: +86 13012223295

Technical Support

If you have any questions regarding product installation, commissioning, operation or maintenance, please contact our technical support team for professional assistance:

Email: [email protected]