Long Welding Neck

Price 550 INR/ Piece

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MOQ : 10 Pieces

Long Welding Neck Specification

Feature
Long neck for reinforcement, High strength, Accurate dimensions

Dimension (L*W*H)
As per standard or customer request

Grade
ASTM A105, A182 F304/304L, F316/316L, F11, F22, etc.

Application
Pipeline, Oil & Gas, Petrochemical, Power Plant

Purity
Industrial Grade

Product Type
Long Welding Neck Flange

Material
Carbon Steel, Stainless Steel, Alloy Steel

Standard
ANSI B16.5, ASME B16.47, DIN, EN1092-1, BS, JIS, GOST

Shape
Round

Surface
Rust-Proof Oil Coating / Machined / Polished

Connection
Welded

Technics
Forged

Pressure
Class 150 to 2500 (PN 2.5 to PN 400)

Size
1/2 to 48 (DN15~DN1200)

Color
Metallic / Silver Grey

Finish
Smooth machined finish

Hardness
187~235 HB (varies by material)

Corrosion Resistance
Yes

MOQ
1 Piece

Wall Thickness
Sch 10S, 20, 40, 60, 80, 100, 160, XXS or as specified

Testing
Ultrasonic Testing, PMI, Hydrostatic Test, Visual Inspection

Packing
Plywood Cases / Wooden Pallets / as per customer requirement

Face Type
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

End Type
Butt-weld

Temperature Range
-29°C to 600°C (Depending on material)

Long Welding Neck Trade Information

Minimum Order Quantity
10 Pieces

Supply Ability
500 Pieces Per Day

Delivery Time
1 Week

About Long Welding Neck

Long Welding Neck

Technical Details:

Product Type	LWN Forged Flange,Long welding neck flange
Size	0-1 inch,>30 inch,AS PER CUSTOMER'S REQUIREMENT,20-30 inch,10-20 inch,5-10 inch,1-5 inch
Features	Corrosion resistant,Accurate dimensions,Can sustain high pressure & temperature load,Rust proof f
Usage/Application	Paper & Pulp Companies,High Pressure Applications,Oil and Gas Industry,Chemical Refinery,Pipeline
Material Standard	ASTM A105,ANSI B16.5,ASTM A351,ASTM A182
Rated Pressure	Corrosion resistant,Accurate dimensions,Can sustain high pressure & temperature load,Rust proof f
Brand	NASCENT
Class	Class 150,Class 300,Class 400,Class 600,Class 900,Class1500,Class 2500 \| PN6,PN10,PN16,PN25
Type	LWN Forged Flange,Long welding neck flange
Material	Carbon Steel
Packaging Type	Standard
Pressure	# 150,# 300,# 400,# 600,# 900,#1500,# 2500 \| PN6,PN10,PN16,PN25

Exceptional Durability & Precision

Engineered through forging and strict standards such as ANSI B16.5, ASME B16.47, EN1092-1, our Long Welding Neck flanges deliver robust performance. Each piece undergoes comprehensive testinghydrostatic, ultrasonic, and visual inspectionsensuring accurate dimensions and long service life even in harsh conditions.

Versatile Material & Customization Options

Choose from a range of grades including ASTM A105, A182 F304/304L, and F316/316L, in metallic and silver-grey finishes. Customize wall thickness, face types, surface finish, and dimensions to fit project requirements. Flanges are supplied with rust-proof coatings or polished finishes and can be packed per customer request.

Industrial Grade for Demanding Applications

Ideal for pipeline, oil & gas, petrochemical, and power plant settings, these flanges withstand demanding environments. The reinforced long neck design supports optimal stress distribution, high strength, and corrosion resistance for safe, efficient operations in both low and high-pressure systems.

FAQs of Long Welding Neck:

Q: How are Long Welding Neck flanges typically used in industrial applications?

A: Long Welding Neck flanges are primarily used to provide reinforcement in high-pressure, high-temperature piping systems such as oil & gas, petrochemical, and power plants. Their long neck offers gradual stress distribution, preventing weld failures and ensuring piping integrity.

Q: What face types are available for Long Welding Neck flanges and why choose among them?

A: These flanges are offered with Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) options. The choice depends on the sealing requirements and operating pressure; RF is common for general uses, FF is often used where design dictates full gasket contact, and RTJ is preferred for high-pressure, leak-tight applications.

Q: What is the process for quality assurance of Long Welding Neck flanges?

A: Every flange undergoes rigorous inspections, including Ultrasonic Testing, Positive Material Identification (PMI), hydrostatic tests, and visual checks. This ensures the flanges meet stringent quality standards for mechanical properties, material composition, and dimensional accuracy.

Q: When should a specific wall thickness or pressure rating be selected?

A: Wall thickness (Sch 10S, 20, 40, up to XXS) and pressure class (Class 150 to 2500, PN 2.5PN 400) should be chosen based on the operating parameters such as fluid pressure, temperature, and the piping code requirements of your project to ensure safety and longevity.

Q: Where can these flanges be installed, and are they corrosion resistant?

A: Long Welding Neck flanges are installed in pipeline systems requiring structural support and leak-proof connections, such as oil refineries, chemical plants, and power stations. Their corrosion-resistant properties make them suitable for both aggressive and general industrial environments.

Q: How does the long neck design benefit the performance of these flanges?

A: The long neck provides added reinforcement by distributing stress over a broader area, reducing the risk of weld failure. This design enhances the flanges mechanical strength, making it suitable for heavy-duty or critical service pipelines.

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