Explore Creative Piping's collection for premium ASTM A694 weld neck flanges, combining quality with affordability.

Cabon steel flanges are essential components in various industrial applications, offering durability and reliability. These flanges are commonly manufactured using ASTM standards such as A105, A105N, LTCS A350 LF2, and A694. ASTM A350 LF2 specifically caters to low-temperature applications, ensuring robust performance even in challenging environments. Meanwhile, ASTM A694 encompasses both high-yield and high-temperature variants, providing versatility in different operational conditions. These flanges adhere to industry standards like MSS SP-44 and DIN 2533, ensuring compatibility and consistency across installations.

The composition of cabon steel flanges varies based on the required properties, with different carbon content defining their characteristics. Low carbon steel flanges, containing carbon in the range of 0.005% to 0.3%, are suitable for general-purpose applications. Medium carbon steel, with carbon content ranging from 0.3% to 0.8%, offers improved strength and hardness. High carbon steel flanges, with carbon content from 0.8% to 2.0%, are ideal for applications requiring exceptional strength and wear resistance. Additionally, ultra-high carbon steel flanges, with carbon content between 1.25% to 2.0%, provide unparalleled hardness and durability, suitable for demanding environments.

Cabon steel flanges

Our CS ASTM A105/A105N spectacle blind flange, Low Temperature ASTM A350 LF2 slip-on flange, High-Temperature ASTM A694 blind flange offered in various thicknesses and sizes, provide versatile solutions tailored to the needs of the oil and gas industries.

Carbon steel threaded flange specification

Standards 01

ASTM A105, A105N, LTCS A350 LF2, A694

Size range 02

1/2″ (15 NB) to 48″ (1200NB)

Pressure Rating 03

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Dimensions 04

ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API-605, ASA, AWWA, Custom Drawings

Connection Type 05

Flat Face, Raised Face, RTJ, Lap Joint, Male and Female (M&F), Large and Small Tongue-and-Groove

MTC 06

EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103

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These cabon steel flanges conform to industry standards set by ASME, such as ASME B16.5 for pipe flanges and flanged fittings ranging from NPS ½” to 24”, and ASME B16.47 for large diameter steel flanges covering NPS 26” to 60”. These standards ensure uniformity, compatibility, and reliability in the design, manufacturing, and installation processes. Whether for low, medium, or high-temperature applications, cabon steel flanges offer a robust solution, meeting the diverse needs of industries ranging from oil and gas to petrochemicals and beyond.

01 What are the common specifications for carbon steel flanges?

Carbon steel flanges are typically manufactured to ASTM A105, A105N, A350 LF2, and A694 standards. These specifications cover various grades suitable for different temperature and pressure applications, including low temperature (LTCS), high yield, and high-temperature carbon steel flanges.

ASTM A105 and A105N are standard grades for carbon steel flanges suitable for ambient and higher-temperature service. A350 LF2 is a low-temperature grade, while A694 encompasses both high-yield and high-temperature carbon steel flanges, providing options for different operating conditions.

Carbon steel compositions vary based on carbon content. Low carbon steel (C content: 0.005% to 0.3%) offers good weldability and formability. Medium carbon steel (C content: 0.3% to 0.8%) provides increased strength and hardness. High carbon steel (C content: 0.8% to 2.0%) offers further enhanced strength and wear resistance, while ultra-high carbon steel (C content: 1.25% to 2.0%) is exceptionally strong but less ductile.

Carbon steel flanges conform to standards such as MSS SP-44 and DIN 2533 for various sizes and pressure ratings. Additionally, ASME B16.5 covers pipe flanges and flanged fittings ranging from NPS ½” to 24”, while ASME B16.47 addresses large diameter steel flanges from NPS 26” to 60”, ensuring compatibility and uniformity in design and dimensions.

Carbon steel flanges are widely used in industries such as oil and gas, petrochemical, power generation, and water treatment, among others. They are employed in piping systems handling fluids and gases at different temperatures and pressures, offering reliable performance and cost-effectiveness.

Low-temperature carbon steel industrial flanges