ASME B16.5 1500# Welding Neck Flange UNS S32750 Super Duplex Stainless Steel
This high-performance super duplex stainless steel welding neck flange is strictly manufactured in accordance with ASME B16.5 standard, crafted from premium UNS S32750 super duplex stainless steel, featuring a welding neck (WN) design and a high pressure rating of 1500#. It is engineered for extreme harsh industrial pipeline environments, delivering superior corrosion resistance, high strength, and reliable leak-proof performance for critical high-pressure applications.
UNS S32750 (also known as F53) is a high-alloy super duplex stainless steel, combining the advantages of austenitic and ferritic stainless steels. It boasts exceptional resistance to pitting, crevice corrosion, stress corrosion cracking, and general corrosion, even in aggressive media such as seawater, acidic solutions, and industrial chemicals. With high tensile strength, yield strength, and fatigue resistance, it can withstand long-term operation under high pressure (1500#) and harsh temperature conditions, outperforming conventional stainless steels in demanding scenarios.
The welding neck design ensures a seamless, smooth transition between the flange and pipeline, minimizing stress concentration and enabling full penetration welding. This design enhances structural integrity, prevents fluid turbulence, and ensures a permanent, secure connection that can withstand high pressure and thermal expansion. The flange is precision forged and machined, with strict dimensional accuracy, a smooth sealing surface (RF, RTJ available on request), and consistent material uniformity, ensuring tight sealing and compatibility with standard pipeline components.
Widely applied in offshore oil and gas, marine engineering, chemical processing, desalination plants, and high-pressure pipeline systems where corrosion resistance and high strength are critical. All flanges undergo rigorous quality control, including chemical composition analysis, mechanical performance testing, pressure testing, and dimensional inspection, fully complying with ASME B16.5 standards and international industrial requirements.
Key Specifications:
- Standard: ASME B16.5
- Material: UNS S32750 (F53) Super Duplex Stainless Steel
- Type: Welding Neck Flange (WN)
- Pressure Rating: 1500#
- Size Range: DN15 - DN600 (custom sizes available)
- Face Type: Raised Face (RF) as standard, Ring Type Joint (RTJ) optional
- Application: Offshore, petrochemical, desalination, chemical, marine, high-pressure piping systems
With outstanding durability, stable performance, and excellent interchangeability, it provides a cost-effective and reliable connection solution for high-pressure, high-corrosion industrial pipeline projects.
| Test |
Chemical Component Analysis, Mechanical Properties, Metallurgical Analysis, Impact Testing, Hardness testing , Ferrite Testing, Intergranular corrosion testing, X-ray Inspection (RT), PMI, PT, UT, HIC & SSC test, etc. or as your requirement |
| Brand |
TOBO |
| Certificates |
API, ISO, SGS, BV, CE, PED, KOC, CCRC, PDO, CH2M HILL and etc. |
| Advantages |
1. Abundant stock and prompt delivery
2. Reasonable for whole packages and processes.
3. 15 years' QC team service & sales management API& ASTM trained engineers.
4. More than 150 customers spread worldwide. |
| MOQ |
1pcs |
| Delivery time |
10-100 days depending on quantity |
| Payment terms |
T/T or Western Union or LC |
| Shipment |
FCA Tianjin/Shanghai, CFR, CIF, etc |
| Application |
Petroleum/Power/Chemical/Construction/Gas/Metallurgy/Shipbuilding etc |
| Remarks |
Other materials and drawings are available. |
N08800 features
1. High temperature strength
2. High creep breaking strength
3. Resistance to oxidation and Carburization in high temperature environment
4. Good corrosion resistance in many acidic environments
5. Good tolerance to many sulfur-containing atmospheres
FAQ.
Q: Are you trading company or manufacturer ?
A: We are manufacturer ,You can see the certification.
Q: How long is your delivery 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.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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