ASTM A105 Forged Steel Socket Weld Flange ASME B16.5 Class 150 RF

Product Specification

ASTM A105 Forged Steel Socket Weld Flange ASME B16.5 Class 150 RF

1. Product Description 

Forged Steel Flanges are flange products manufactured through forging processes such as cutting and forging, using materials including carbon steel, alloy steel, and stainless steel. A forged flange is defined as a plate-type device, normally round, that is attached to the end of a pipe, fitting, valve, or other object to facilitate the assembly and disassembly of a piping system.

The manufacturing process involves plastic deformation of metal under high temperature and pressure, which refines the grain structure and eliminates internal defects such as porosity and segregation. Forged flanges are manufactured in accordance with international standards including ASME, ANSI, DIN, JIS, BS, GB, and EN. Common material grades include ASTM A105 (carbon steel), ASTM A182 (alloy and stainless steel grades such as F304, F316, F11, F22, F91), A350 LF2, and A694 series.

2. Product Applications 

Forged Steel Flanges are primarily used as connection components for pipes, valves, pumps, and other equipment to form a complete pipework system. They are suitable for connecting steel pipes conveying mediums such as steam, oil, gas, air, water, and various chemical substances.

The flanges are widely applied in the following industries:

• Oil and gas pipelines and refineries

• Chemical and petrochemical plants

• Power generation and thermal power plants

• Shipbuilding and offshore platforms

• Nuclear power facilities

• Water supply, drainage, and fire protection systems

• Food processing and pharmaceutical industries

• Aerospace and construction industries

They are especially suitable for high-pressure, high-temperature, and corrosive working conditions that demand superior reliability and safety.

3.Product Advantages 

Compared with cast steel flanges, forged steel flanges offer significant advantages:

1. Superior Mechanical Properties — Forging refines the grain structure and eliminates internal defects such as porosity and inclusions. The internal structure is uniform and dense, resulting in significantly higher tensile strength, yield strength, and hardness. Forged flanges can withstand higher shear forces and tensile loads compared to cast flanges.

2. Excellent Corrosion Resistance — Forged steel flanges have lower carbon content than cast flanges, making them less prone to rust. They also offer superior resistance to acids, alkalis, salts, and other corrosive media.

3. High Temperature and Pressure Resistance — The improved grain structure enables forged flanges to withstand elevated temperatures and high pressures without significant deformation or loss of strength. Typical operating temperature ranges from -40°C to 600°C.

4. Superior Sealing Performance — Forged flanges feature precision-machined sealing faces (flat, raised, male/female, tongue/groove) that ensure reliable, leak-proof connections when used with appropriate gaskets.

5. Precision Dimensional Control — Advanced CNC equipment and inspection technology ensure dimensional accuracy and tolerances conform to international standards, improving installation efficiency and reducing on-site processing time.

6. Long Service Life — Due to their superior mechanical properties and corrosion resistance, forged flanges offer extended service life, reducing replacement frequency and lifecycle costs.

4.Key Technical Parameters

FAQ

1. Are you trading company or manufacturer ? We are manufacturer ,You can see the 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.