Top WNRF Long Weldneck Flange Suppliers in India

Prayag Precitech is a renowned manufacturer and exporter of Long Weld Neck Flanges in India and across the globe. We are dedicated to delivering cost-effective, reliable, and top-quality flanges to our valued customers.

Long Weld Neck Flanges (LWN flanges) are specifically employed in high-pressure scenarios, with integral hub weld neck flanges being utilized for elevated pressure applications. In such situations, the welds are strategically positioned away from the flange’s ring to prevent the amalgamation of bending and weld stresses.

The design of the Long Weld Neck Flange serves as a substitute for a Weld Neck Flange and a piece of pipe in a bolt-up connection to the vessel. This innovative design minimizes stress on the flange neck by transferring it to the base, where it connects with the vessel. Among the various self-reinforced nozzle designs, the Long Weld Neck Flange is the most commonly used, with two distinct types available: the heavy barrel featuring a long weld neck and the equal long weld neck barrel, which comes in a variety of shapes.

• Size: 1/2″ NB to 80″ NB
• Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
• Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
• Schedule: 10/20/40/80/100/120/160/XXS
• Carbon Steel: ASTM A 105
• Carbon Steel DIN Standard: EN 10222-2/ EN 10222-4 – P235GH / P245GH / P265GH / P280GH / P295GH / P355N / P355NH / P285NH / P285QH
• Other Services: Hot Dip Galvanizing, Sand Blasting, Special Threading.

Alloy Steel & LTCS Specification:

• Size: 1/2″ NB to 80″ NB
• Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
• Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
• Schedule: 10/20/40/80/100/120/160/XXS
• Alloy Steel: ASTM A 182-F5, F9, F11, F21, F22 & F91
• Low Temp. CS: A 350 LF2
• Other Services: Hot Dip Galvanizing, Sand Blasting, Special Threading.

Stainless Steel & Duplex Steel Specification:

• Size: 1/2″ NB to 64″ NB
• Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
• Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
• Schedule: 10/20/40/80/100/120/160/XXS
• Stainless Steel: ASTM A 182 F -304/304H/304L/316/316H/316L/316Ti/309/310/317L/321/347/904L,XM19
• Stainless Steel DIN Standard: EN 10222-5 1.4301/1.4307/1.4401/1.4404/1.4529/1.4571/1.4541/1.4410/1.4550/1.4335/1.4539
• Duplex Steel: ASTM A 182 F -51, F 53, F 55

Nickel Alloys Specifications:

• Size: 1/2″ NB to 48″ NB
• Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
• Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
• Schedule: 10/20/40/80/100/120/160/XXS
• Copper Nickel: C70600(90:10), C71500(70:30), C71640
• Nickel: UNS N02200, N02201
• Monel: UNS N04400, N05500, Alloy 20
• Inconel: UNS N06600, N06601, N06625, N08800, N08810, N08825
• Hastelloy: UNS N10276, N06022, N10665, N06455
• SMO 254 Grade: UNS S31254
• Aluminium: ASTM B247, B361 – 2024, 6061, 6063, 6101, 7075.
• Titanium: ASTM B381 – Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23

Why Choose Us

• Quality Assurance: We adhere to stringent quality control measures to ensure that our flanges meet international standards.
• Expertise: With years of experience in the industry, our team possesses the knowledge and skills necessary to provide exceptional products.
• Cost-Effectiveness: We offer competitive pricing without compromising on quality, making our products accessible for all applications.
• Custom Solutions: We provide tailored solutions to meet the specific needs of our clients, ensuring optimal performance in their applications.
• Timely Delivery: Our efficient production and logistics systems ensure that you receive your orders on time, every time.

Choose Prayag Precitech for reliable, innovative, and high-quality Long Weld Neck Flanges that cater to all your requirements!