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Carbon Steel Flanges

In choosing flanges, forged carbon steel flange is by far the most popular option. There are different types of Carbon Steel Flanges like weld neck flange, lap joint flange, blind flange, and many others. These products are widely used in various industries and widely appreciated by clients for owning unmatchable characteristics.

1. Carbon Steel Pipe Flange Standards

ASME/ANSI B 16.5

Welding Neck Flange, Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange

PRESSURE CLASS

150, 300, 400, 600, 900, 1500, 2500

ASME/ANSI B 16.47

Welding Neck Flange, Blind Flange [Series A & B]

PRESSURE CLASS

75, 150, 300, 400, 600, 900

ASME/ANSI B 16.36

Welding Neck Flange, Slip on Flange, Threaded Flange

PRESSURE CLASS

300, 400, 600, 900, 1500, 2500

BS 4504 SEC 3.1

Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange

PRESSURE CLASS

PN 2.5 TO PN 40

BS10

Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange

TABLE

D, E, F, H

DIN FLANGES

DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673

PRESSURE CLASS

PN 6 TO PN 100

2. Carbon Steel Flange Types

Carbon Steel Flanges are corrosion resistant and have a wide variety of uses. We carry a variety of flanges types and of course, we can custom build Carbon Steel Flanges to your specifications. Here are some commonly used carbon steel flange types according to ASME B16.5.

Estan pipe fittings weld neck flange image

3. Carbon Steel Flange Dimensions

Dimensions of Class 150 Flanges as per ANSI B16.5.  Dimensions of Class 150 Flanges as per ANSI B16.5 for reference.

carbon steel flange dimensions

4. Carbon Steel Flange Material

The most common material used today is A105 forged carbon steel, with sizes ranging from 1/2”–24” in ASME B16.5, 26”–60” in ASME B16.47. The wide temperature and pressure range makes carbon steel flanges an attractive solution for industrial applications, and have proven to be one of the least expensive pricing options.

Carbon-Steel-Flange-manufacturer-supplier

ASTM A105 Carbon Steel Pipe Flanges


Carbon Steel A105 Flanges are operated under temperatures 500 Degree to 550 Degree. It is used in Hydro-carbon, Marine engineering processing. Heat exchangers, pumps manufacturing, petrochemical plants, valves manufacturing, oil & gas equipment, nuclear power projects, and so on.

ASTM A350 LF2 - Low Temperature Carbon Steel Pipe Flange

If your application calls for low temperature service, consider A350 LF2 forged carbon flanges (with Charpy V-Notch Impact Tests at -50°F) or the superior LF3 (CVNs at -150°F). These are very similar to A105 in most ways, but are rated for colder ambient utilization.

ASTM A694 - A Rigorous Carbon Steel Pipe Flange Material

carbon steel A694 flanges material, It is stringent to high-pressure fluid transmission of oil and gas piping. And because of this property of the steel grade, manufacturers have to develop even stronger steel to withstand both cryogenic and high temperatures.

Chemical Composition of ASTM A694

Grade CMnPSSi
ASTM A694 F420.26-0.2651.60-1.640.025-0.0300.025-0.0300.15-0.35
ASTM A694 F520.26-0.2651.60-1.640.025-0.0300.025-0.0300.15-0.35
ASTM A694 F600.26-0.2651.60-1.640.025-0.0300.025-0.0300.15-0.35
ASTM A694 F650.26-0.2651.60-1.640.025-0.0300.025-0.0300.15-0.35

Tensile Requirements of ASTM A694

GradeYield Strength (0.2 % Offset), min, ksi [MPa]Tensile Strength
min, ksi [MPa]
Elongation in 2 in. or 50 mm, min %
F4242 [290]60 [415]20
F4646 [315]60 [415]20
F4848 [330]62 [425]20
F5050 [345]64 [440]20
F5252 [360]66 [455]20
F5656 [385]68 [470]20
F6060 [415]75 [515]20
F6565 [450]77 [530]20
F7070 [485]82 [565]18

5. Weight of Carbon Steel Flanges

Class 150 carbon steel flange weight chart

class 150 carbon steel flange weight

6. Carbon Steel Flange Price List

Carbon Steel Flanges Price List is available from us for any type of flanges. The ASME B 16.5 Carbon Steel Flanges Price List lists the flanges of ½ NPS through 24 NPS flanges. These flanges are used in oil and gas, petroleum, water supply, and other lines of pipes.

Carbon Steel Weld Neck Flange Price Per Piece in China

Carbon Steel Weld Neck Flange Price in USD

FLANGES- WELD NECK, CARBON STEEL PER ASTM A350 GRADE LF2

USD $ 456.62

WELD NECK CARBON STEEL FLANGE LF2 B1

USD $ 2.30

WELD NECK CARBON STEEL FLANGE LF2 B1

USD $ 2.67

WELD NECK CARBON STEEL FLANGE LF2 B1

USD $ 1.90

WELD NECK CARBON STEEL FLANGE LF2 B1

USD $ 2.71

WELD NECK CARBON STEEL FLANGE LF2 B1

USD $ 5.13

WELD NECK CARBON STEEL FLANGE LF2 B1

USD $ 2.21

FLANGES CARBON STEEL GR :A105 FLG WN 300#RF STL STD BORE WELD NECK RATING -ASME CLASS 300 FAACING -RAISED FACE

USD $ 2.32

WELD NECK CARBON STEEL FLANGE LF2

USD $ 6.49

At Estan pipe fittings, we offer all types of flanges for various systems. Manufacturer of standard and custom flanges made from carbon steel. Types include socket weld flange, blind flange, weld neck flange, NPTF, BSPP, and BSPT threaded flanges, etc. Most items are available in stock.

If you’re in need of carbon steel flanges for your next project, give us a call, we will be your trusted flange manufacturer and supplier.

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