ASME B16.5 Carbon Steel Flange

ASME B16.5 is a standard developed by the American Society of Mechanical Engineers (ASME), which specifies in detail the dimensions, tolerances, markings, materials, and other related requirements for pipeline flanges and flange connections. Carbon steel flange refers to a flange forged from carbon steel material. ASME B16.5 carbon steel flanges typically refer to flanges that comply with ASME B16.5 standards and are manufactured using carbon steel materials. Carbon steel is a commonly used metal material with good strength, plasticity, and weld ability, therefore it has been widely used in industrial manufacturing. This type of flange can be used in various pipeline systems, especially in environments that require high pressure and temperature resistance.

The Types Of ASME B16.5 Carbon Steel Flange

ASME B16.5 carbon flange has a variety of types:welding neck flange, slip on flange, socket flange, threaded flange, lap joint flange, and blind flange.

The flange with a size range of DN15-DN600 (1/2IN-24IN) follows the production standard of ASME B16.5.Pressure levels: Class150, 300, 400, 600, 900, 1500, 2500.

Flange sealing surface types: raised face (RF), flat face (FF), male face (M), famale face(FM),tongue face (TG), ring joint face(RTJ). There are three common types of sealing surfaces: RF, FF, and RTJ.

The Dimension Of ASME B16.5 CLASS 600 Carbon Steel Flange

Material Characteristics

Common ASME B16.5 carbon steel flange materials include ASTM A105, ASTM A350 LF2, ASTM A694, 20#, 16Mn, etc.

Chemical Composition

Mechanical Properties

ASTM A350 LF2 Impact Test 

CLASS1 The test temperature is-46℃，At this point, the average value of the three specimens should achieve an impact toughness AK requirement of ≥ 20J, and at least one of the three specimens should have an impact toughness AK value of ≥ 16J.

CLASS2 The test temperature is -18 ℃. At this time, the average value of the three samples should achieve an impact toughness AK requirement of ≥ 27J, but the requirement for the minimum impact toughness AK value among the three samples was not mentioned.

The requirement for low-temperature impact testing is to ensure that the material has good impact resistance under low-temperature conditions. As a high-quality cryogenic steel flange, ASTM A350 LF2 flange has been widely used in the connection of cryogenic pipeline systems, vessels and equipment in petroleum, natural gas, chemical, shipbuilding, aerospace and other industries.

Advantages

High strength and durability：

Good plasticity and weldability

Wide application range

Standardization and Interchangeability

Excellent cost-effectiveness

Application

Oil and gas Industry

Chemical industry

Power industry

Shipbuilding industry

Construction industry

It should be noted that although ASME B16.5 carbon steel flanges are suitable for the above scenarios, they still need to be selected and used according to actual needs and conditions in specific applications. At the same time, it is necessary to follow relevant standards, specifications, and installation requirements to ensure the safety and reliability of the flange.