Name: ASTM A694 F42 Carbon Steel Flange Weld Neck RTJ High Pressure Pipeline 42ksi Yield Strength For API 5L X42
Brand: YUHONG HOLDING GROUP CO., LTD
SKU: ASTM A694 F42
Availability: InStock

Home > Products > Steel Flange >

ASTM A694 F42 Carbon Steel Flange Weld Neck RTJ High Pressure Pipeline 42ksi Yield Strength For API 5L X42

ASTM A694 F42 carbon steel flange

weld neck RTJ high pressure flange

API 5L X42 pipeline flange

Place of Origin:

CHINA

Brand Name:

YUHONG

Certification:

ISO 9001-2015

Model Number:

ASTM A694 F42

Chat Now

Request A Quote

Product Details

Standard:

ASTM A694

Material:

F42

Flange Type:

Flange

Pressure:

Class 150# To 2500#

Size Range:

Customizable

Flange Standard:

ANSI B16.5

Highlight:

ASTM A694 F42 carbon steel flange

weld neck RTJ high pressure flange

API 5L X42 pipeline flange

Payment & Shipping Terms

Minimum Order Quantity

1 PC

Price

NON

Packaging Details

WOODEN CASE, Ply-Wooden Cases with Steel Frames

Delivery Time

1 - 4 MONTH

Payment Terms

T/T

Supply Ability

300 TONS / MONTH

ASME SA266 GR.2N Tube Side Flange Connecting The Heat Exchanger Shell And The Tube Box

Chat Now

ASME SA105 Flange And ASME SA516 GR485 Shell

Chat Now

ASME SA336 F11 Cl2 alloy Steel Tube Side Flange For High temperature and high pressure environment

Chat Now

ASME SA105 Body Flange ASME B16.5 For Pressure vessels, Shell And Tube Heat Exchangers

Chat Now

+8613625745622

nirit@steelseamlesspipe.com

0086-574-88013900

Chat Now

Product Description

ASTM A694 F42 Carbon Steel Flange Weld Neck RTJ High Pressure Pipeline 42ksi Yield Strength For API 5L X42

ASME/ASTM A694 F42 is a high-strength carbon steel forged flange material specifically designed for high-pressure transmission pipelines. This standard covers forged or rolled steel pipe flanges, forged pipe fittings, valves, and components suitable for piping systems providing high-strength transmission services.

A significant characteristic of A694 F42 is its strength rating matching with API 5L X42 line pipe – a core requirement for flange and pipe material matching in long-distance oil and gas pipeline projects. The "42" in F42 represents its minimum yield strength of 42 ksi (approximately 290 MPa). The A694 series is divided into nine grades based on minimum yield strength: F42, F46, F48, F50, F52, F56, F60, F65, and F70, with F42 being the basic grade in this series.

Core positioning: The A694 F42 flange is a high-strength carbon steel flange solution for medium and high pressure oil and gas transmission pipeline systems, forming a complete pipeline matching system with API 5L X42 line pipe and A860 WPHY42 pipe fittings.

Chemical Composition
Element	Content (max, %)
C (Carbon)	≤ 0.30
Mn (Manganese)	≤ 1.60
P (Phosphorus)	≤ 0.025
S (Sulfur)	≤ 0.025
Si (Silicon)	0.15 – 0.35

Mechanical Properties (Room Temperature, Minimum) – F42 Grade

Parameter

F42 Value

Ambient to ~425°C

Yield Strength (0.2% offset)

≥ 290 MPa / 42 ksi

Tensile Strength

≥ 415 MPa / 60 ksi (range 415–585 MPa)

Elongation (gage length 50mm or 2 in.)

≥ 20%

Hardness (reference)

≤ 200 HB

A694 Full Grade Series Mechanical Properties Comparison
Grade	Min. Yield Strength (MPa)	Min. Tensile Strength (MPa)	Min. Elongation (%)
F42	290	415	20
F46	315	415	20
F48	330	425	20
F50	345	440	20
F52	360	455	20
F56	385	470	20
F60	415	515	20
F65	450	530	20
F70	485	565	18

Dimensional and Pressure Rating Range
Parameter	Range	Standard Reference
Nominal Pipe Size (NPS)	1/2″ – 48″ (DN15 – DN1200)	ASME B16.5 / B16.47 / MSS SP-44
Pressure Class	150# / 300# / 400# / 600# / 900# / 1500# / 2500#	ASME B16.5
Pressure Class (Metric)	PN6 – PN100	EN 1092-1
Flange Types	Socket Weld, Slip-On, Lap Joint, Weld Neck (WN), Blind, Threaded	ASME B16.5 / B16.47
Facing Types	RF (Raised Face) / FF (Flat Face) / RTJ (Ring Type Joint) / Tongue & Groove	ASME B16.5

Applications:

Oil & Gas (Onshore & Offshore) Long-distance oil and gas transmission pipelines – flange connections for high-pressure lines; wellhead Christmas trees; manifolds; pipeline valves and pump connections
Petrochemical & Chemical Processing Medium to high-pressure process piping systems in refineries and chemical plants
Power Generation High-pressure steam lines; boiler feedwater systems; steam turbine connections
General Industrial Marine piping systems (shipboard high-pressure lines); high-pressure water treatment pipelines; industrial utility piping

ASTM A694 F42 Carbon Steel Flange Weld Neck RTJ High Pressure Pipeline 42ksi Yield Strength For API 5L X42 0

Ratings& Review

Overall Rating

4.3

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

33%

4 stars

67%

3 stars

2 stars

1 stars

All Reviews

Robert Miller

United States Jan 7.2026

Helpful (2)

Fully meets the rigorous requirements of TEMA R standards. We used these SA266 Grade 2N flanges for a refinery project in Texas. The machining precision is impressive, and the sealing face finish is absolutely perfect.

A*d

United Arab Emirates Nov 26.2025

Helpful (3)

The packaging was very solid; even after long-distance sea freight, there were no dents on the sealing faces.

C*a

Brazil Dec 14.2024

Helpful (3)

We were looking for a reliable supplier for offshore platforms, and the quality of these tube side flanges exceeded expectations. The forging flow lines of the SA266 Gr.2N are very intact.

Tags：

ASTM A694 F42 Carbon Steel Flange Weld Neck RTJ High Pressure Pipeline 42ksi Yield Strength For API 5L X42

ASTM A694 F42 carbon steel flange

weld neck RTJ high pressure flange

API 5L X42 pipeline flange

ASTM A694 F42 carbon steel flange

weld neck RTJ high pressure flange

API 5L X42 pipeline flange

ASME SA266 GR.2N Tube Side Flange Connecting The Heat Exchanger Shell And The Tube Box

ASME SA105 Flange And ASME SA516 GR485 Shell

ASME SA336 F11 Cl2 alloy Steel Tube Side Flange For High temperature and high pressure environment

ASME SA105 Body Flange ASME B16.5 For Pressure vessels, Shell And Tube Heat Exchangers

Overall Rating

Rating Snapshot

All Reviews

pressure vessel flange

heat exchanger flange

stainless steel forged flange

ASME SA266 GR.2N Tube Side Flange Connecting The Heat Exchanger Shell And The Tube Box

ASME SA105 Flange And ASME SA516 GR485 Shell

ASME SA336 F11 Cl2 alloy Steel Tube Side Flange For High temperature and high pressure environment

ASME SA105 Body Flange ASME B16.5 For Pressure vessels, Shell And Tube Heat Exchangers

ASTM A182 F310 Weld Neck RTJ Flange For Oil And Gas Extraction Equipment