ANSI Weld Neck Flanges are designed for reliable butt-weld connections in industrial piping systems. Manufactured in accordance with ASME B16.5 and ASME B16.47 standards, they cover sizes from NPS 1/2–24 and NPS 26–60, with pressure classes ranging from Class 75 to 2500.
Jinhang Pipeline supplies weld neck flanges in carbon steel, stainless steel, and alloy steel, including ASTM A105/A105N, A694 F42–F70, A350 LF1/LF2, A182 F304/304L, F316/316L, F321, F11, F12, and F22. Custom specifications are available upon request to meet project requirements for oil and gas, petrochemical, power generation, and other industrial piping applications.
| Item | Specification |
|---|---|
|
Product Name |
ANSI Weld Neck Flanges |
|
Applicable Standards |
ASME B16.5 / ASME B16.47 |
|
Nominal Size |
NPS 1/2–24; NPS 26–60 |
|
Pressure Class |
Class 150–2500; Class 75–900 |
|
Flange Type |
Weld Neck |
|
Connection Type |
Butt-Weld |
|
Customization |
Available |
|
Material Category |
Material Grades |
|---|---|
|
Carbon Steel |
ASTM A105/A105N, ASTM A694 F42–F70, ASTM A350 LF1/LF2 |
|
Stainless Steel |
ASTM A182 F304/304L, F316/316L, F321 |
|
Alloy Steel |
ASTM A182 F11/F12/F22 |
Jinhang Pipeline manufactures ANSI Weld Neck Flanges in accordance with ASME B16.5 and ASME B16.47, covering applicable sizes, pressure classes, dimensions, and tolerances. These standards help ensure proper fit and reliable integration into industrial piping systems. Available materials include carbon steel, stainless steel, and alloy steel grades specified for project requirements.
Quality control focuses on material verification, forging and machining processes, dimensional accuracy, weld-end preparation, and surface inspection. These measures help ensure consistent product quality, reliable butt-weld connections, and compatibility with customer piping systems. Material grades, pressure ratings, and dimensions are selected according to the applicable standards and project specifications.
Oil and Gas Industry: Connect pipelines for oil, natural gas, and high-pressure fluid transport.
Petrochemical Plants: Support piping systems handling chemicals and process fluids.
Power Generation: Connect piping in power plants and steam systems.
Refineries: Provide reliable flange connections for process piping and equipment.
Water and Industrial Processing: Connect piping systems for water treatment and industrial fluid transport.
Offshore and Marine Projects: Serve in piping systems requiring suitable materials and pressure ratings.
What standards do ANSI Weld Neck Flanges comply with?
Our ANSI Weld Neck Flanges are manufactured to applicable ASME B16.5 and ASME B16.47 requirements, depending on flange size and pressure class.
What materials are available for weld neck flanges?
We supply carbon steel, stainless steel, and alloy steel flanges, including ASTM A105, A694, A350, and A182 grades.
What sizes and pressure classes are available?
Manufactured to ASME B16.5, the size range is NPS 1/2–24; per ASME B16.47, the size range is NPS 26–60. Pressure classes span Class 75 to 2500.
Can you customize ANSI Weld Neck Flanges?
Yes, we can customize products based on customer-provided specifications, drawings, or project requirements.
Which industries use ANSI Weld Neck Flanges?
They are widely used in oil and gas, petrochemical plants, refineries, power generation, and industrial piping systems.
Send us your drawings or requirements and get a fast quotation today.
