Zhejiang Yuhao Stainless Steel Co., Ltd
                                                                                                           
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8 Years
Since 2018
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Stainless Steel Weld Neck Flange – Industrial-Grade Corrosion Resistance & Precision Welding Performance

Price Negotiable
Price: Negotation
MOQ: 100KGS
Delivery Time: 2-10 work days
Brand: Yuhao
Product Description

Stainless Steel Weld Neck Flange



►Product Description

The stainless steel weld neck flange is a vital component in industrial piping, renowned for its robust construction and ability to maintain structural integrity in challenging operating environments. As a preferred choice for engineers, this weld neck flange is fabricated from top-tier stainless steel grades like 304 and 316L, offering exceptional corrosion resistance and compatibility with high-pressure, high-temperature (HPHT) applications across multiple sectors.

A key advantage of the stainless steel weld neck flange lies in its tapered hub design, which enables smooth integration with piping systems and uniform stress distribution at the joint. This design not only strengthens the connection but also supports full penetration welding, eliminating leak risks—a critical factor for handling corrosive fluids, gases, and abrasive media. Unlike standard flanges, the stainless steel weld neck flange adapts to extreme temperature variations, ensuring stable performance in long-term operations.

Our stainless steel weld neck flanges are customized to meet diverse project needs, with a full range of sizes, pressure ratings (150–2500 class), and surface finishes. The 304 stainless steel weld neck flange excels in general-purpose applications such as food processing, water treatment, and light chemical plants, while the 316L stainless steel weld neck flange is optimized for marine environments, chloride-rich settings, and heavy-duty chemical processing due to its enhanced pitting and crevice corrosion resistance.

Every stainless steel weld neck flange undergoes rigorous quality assurance processes, from material composition analysis to dimensional precision checks, adhering to global standards like ANSI/ASME B16.5, DIN 2633, and EN 1092-1. This strict quality control ensures that each weld neck flange fits seamlessly into existing piping setups, reducing installation complexity and lowering maintenance costs over its service life.

The stainless steel weld neck flange is widely utilized in core industries including oil and gas exploration, petrochemical refining, power generation, and pharmaceutical manufacturing. Its versatility makes it suitable for both new construction and system upgrades, providing a cost-effective, long-lasting solution that balances performance and reliability. Contractors and plant operators worldwide trust our stainless steel weld neck flanges for critical piping connections.

Choose our stainless steel weld neck flange for a piping component that combines durability, corrosion resistance, and precision engineering. Supported by professional technical guidance and competitive pricing, our weld neck flanges are engineered to meet the strictest industrial demands, ensuring seamless operation and long-term value for your projects.


►Product  Size

DN Pipe OD Connection Size Flange Thickness(mm)
C
Flagne ID
A B Flange OD Bolt Hole Circle Diameter A B
10 17.2 14 90 60 14 18 15
15 21.3 18 95 65 14 22.5 19
20 26.9 25 105 75 16 27.5 26
25 33.7 32 115 85 16 34.5 33
32 42.4 38 140 100 18 43.5 39
40 48.3 45 150 110 18 49.5 46
50 60.3 57 165 125 19 61.5 59
65 76.1 76 185 145 20 77.5 78
80 88.9 89 200 160 20 90.5 91
100 114.3 108 220 180 22 116 110
125 139.7 133 250 210 22 143.5 135
150 168.3 159 285 240 24 170.5 161
200 219.1 219 340 295 24 221.5 222
250 273 273 395 350 26 276.5 276
300 323.9 325 445 400 26 328 328
350 355.6 377 505 460 28 360 381
400 406.4 426 565 515 32 411 430
450 457 480 615 565 36 462 485
500 508 530 670 620 38 513.5 535
600 610 630 780 725 42 616.5 636


►Shot Shoot


►FAQ

Q1: Delivery time?

A: 1- 7 days for small order.10- 20 days for big order.


Q2: Are you manufacturer or trading company?

A: We are not only manufacturer but also a trading company,we have more than 12years export experience.


Q3: What is your minimum order quantity?

A: The MOQ for each product is different, so it would be recommended to refer to the detail page of the product you are interested in. If you need further clarification, send me the product link, and I will reply as soon as possible.


Q4: Do you provide samples ? Is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.


Q5: How long is your production lead time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Zhejiang Yuhao Stainless Steel Co., Ltd
Location NO.81, LIUZHAI SECTION, LUODONG SOUTH ROAD, YONGZHONG STREET, LONGWAN DISTRICT, WENZHOU, CHINA
Contact Person Department 1

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