Alloy Threaded Flanges: Versatile Non-Welded Connections for ASME B16.5 CLASS 150-600 Lines

Alloy Threaded Flanges: Versatile Non-Welded Connections for ASME B16.5 CLASS 150-600 Lines

Alloy Steel Threaded Flanges provide a practical solution for creating flanged connections without welding. They feature an internal thread that mates with the external thread on a pipe or fitting. This makes them ideal for low-pressure systems, explosive atmospheres where welding is hazardous, or for connections to threaded equipment. They are commonly used in utilities, instrumentation, and plant modifications.

Product Description:
This flange type has a tapered (NPT) or straight (BSP) internal thread machined into its bore. It is screwed onto the threaded pipe end and often secured with a seal weld at the hub or by using thread sealants. Manufactured from forgeable alloy steels per ASTM A105 (forged) or equivalent plate materials.

Key Parameters:
Standardized under ASME B16.5 for pressure classes Class 150 to Class 600. Available in sizes from 1/2" to 4" (larger sizes are less common due to threading challenges). Thread specifications typically follow ASME B1.20.1 (NPT). Face types are usually Raised Face (RF).

Applications:
Suitable for air, water, and low-pressure steam services. Frequently used in galvanized piping systems, fire protection lines, fuel gas lines to appliances, and for connections to pre-threaded valves or equipment. Ideal for temporary installations or systems where future disassembly is anticipated.

Advantages:
Enables quick and easy installation without specialized welding equipment or skilled welders. Allows for easy disassembly and reassembly for maintenance or modifications. Safe to use in environments where hot work (welding) is prohibited due to fire or explosion risks. No welding stresses are introduced into the piping system.

Functionality:
Provides a detachable, sealed connection point. It converts a threaded pipe end into a standard flanged interface, allowing connection to valves, pumps, or other flanged components. The seal is achieved through thread engagement, often supplemented with sealant or a small stabilizing weld.

Payment & Invoicing

1. First-Time Clients: 50% advance payment, 50% balance before shipment.
2. Strategic Clients: 30% advance, 70% payment against copy of Bill of Lading.
3. Long-Term Agreements: 60-day credit terms available (subject to credit approval).
4. Invoicing: 13% VAT Special Invoice provided; FORM A Certificate of Origin for exports.
5. fication System: Laser marking includes material code, pressure rating, and flow direction arrows

FAQ

1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the Alibaba certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.