Description
Product Specifications and Technical Data
An engineered stainless steel known for its high yield strength & decent corrosion resistance
- ✓High Strength – About 2x stronger yield than 316 stainless steel
- ✓Super Duplex – Decent general corrosion & cracking resistance
- ✓Duplex Grades: Duplex 2205, Super Duplex 2507, Zeron 100
- ✓Weld neck flange features and benefits
- ✓Datasheets for Super Duplex 2507 and Duplex 2205
Duplex 2205 and Super Duplex 2507 stainless steel weld neck flanges are characterized by their high yield strength, which is twice that of the annealed yield strength of typical austenitic stainless steels, like 304 and 316 stainless steel weld neck flanges. Because of this, Duplex 2205 and Super Duplex 2507 steel are some of the most common grades of duplex used for weld neck flanges with Super Duplex 2507 weld neck flanges being the more corrosion resistant grade of the two.
Super Duplex 2507 weld neck flanges improved corrosion resistance lends itself well too applications prone to stress-corrosion cracking, crevice corrosion, pitting, erosion and general corrosion. Because of the properties of Duplex and Super Duplex stainless steel weld neck flanges are often used in chemical processing, petrochemicals, power industry and seawater equipment.
Usage of both Duplex and Super Duplex stainless steel should be limited to temperatures below 570° F as extended elevated temperature exposure can embrittle this material.
The most common grades of Duplex flanges are Duplex 2205 and Super Duplex 2507. Gain more insight on these two grades by accessing our Duplex 2205 and Super Duplex 2507 overviews or by contacting our engineering experts.
Flange Types Available: Blind Flanges, Lap Joint Flanges, Slip On Flanges, Socket Weld Flanges, Threaded Flanges, Weld Neck Flanges
Flange Dimensions Reference
Precision-Engineered flange duplex welding neck for Critical Industrial Service
The flange duplex welding neck from SASA FLANGE delivers proven reliability for demanding piping systems.
Manufactured from certified Carbon Steel through precision forging and CNC machining processes.
Fully compliant with ANSI B16.5, ASME, DIN international standards, ensuring seamless global project integration.
The Carbon Steel construction provides excellent mechanical properties and long-term durability.
Widely trusted across oil and gas, chemical processing, power generation, and water treatment industries.
SASA FLANGE offers complete size and pressure class availability backed by 15 years of manufacturing expertise.
Complete Size and Pressure Coverage: flange duplex welding neck Specifications
SASA FLANGE manufactures the flange duplex welding neck in sizes from 1/2 inch to 60 inches per ANSI B16.5, ASME, DIN.
Available pressure ratings include Class 150-2500, suitable for utility services to ultra-high-pressure applications.
Sealing face configurations include Raised Face, Flat Face, Ring Type Joint, and Lap Joint options.
Surface treatments available: Anti-rust oil.
Every piece undergoes dimensional verification with calibrated instruments ensuring bolt hole accuracy and sealing surface integrity per applicable international standards.
From Refineries to Offshore Rigs: Where flange duplex welding neck Performs
Oil and gas facilities install the flange duplex welding neck in wellhead connections and process piping for critical pressure containment.
Chemical plants specify it for reactor vessels and heat exchanger connections requiring long-term corrosion resistance.
Power generation stations deploy it in steam cycle and cooling water systems.
Water treatment facilities use it throughout chemical dosing and distribution piping.
Marine and offshore installations rely on it for topside process piping in harsh saltwater environments.
Get Your flange duplex welding neck Shipped Fast – Request a Quote Today
SASA FLANGE manufactures the flange duplex welding neck to multiple international standards ensuring worldwide compatibility.
Standard sizes ship within 3-7 business days from stock; custom specifications manufactured in 15-30 days.
Every shipment includes Mill Test Certificate per EN 10204 3.1, PMI testing, and hydrostatic pressure testing under ISO 9001:2015 quality management.
Contact our engineering team at sales@sasaflange.com or WhatsApp +86 13764965049 for competitive quotations and technical support.
Why Choose SASA FLANGE?
15+ Years ExperienceEstablished flange manufacturer serving global industries since 2008. |
Multi-Standard ProductionManufacturing to ANSI, DIN, JIS, GOST standards with CMM inspection. |
Complete Material RangeCarbon, stainless, alloy steel with Mill Test Certificates. |
Fast DeliveryStock items ship 3-7 days. Custom orders 15-30 days. |
ISO 9001:2015 CertifiedQuality management ensuring consistent product reliability. |
Global ExportShipped to 50+ countries with professional packaging. |
flange duplex welding neck Application Scenario
The flange duplex welding neck is widely deployed across critical industrial sectors where reliable pipe sealing and pressure containment are essential. Typical application scenarios include:
From high-pressure refinery piping to municipal water distribution networks, the flange duplex welding neck ensures leak-free connections and long-term service reliability in demanding environments.
flange duplex welding neck installed in industrial piping system
Frequently Asked Questions
Q: What is a flange duplex welding neck used for?
A: The flange duplex welding neck creates secure, leak-proof pipe connections in industrial piping systems. Commonly installed in oil and gas, chemical processing, power generation, and water treatment facilities. Made from Carbon Steel per ANSI B16.5, ASME standards, it ensures reliable pressure containment. SASA FLANGE supplies full size range with certified quality documentation per EN 10204 3.1.
Q: What materials are available for the flange duplex welding neck?
A: SASA FLANGE offers the flange duplex welding neck in carbon steel (ASTM A105), stainless steel (A182 F304, F316, F316L), alloy steel (A182 F11, F22), and duplex (A182 F51, F53). Each grade provides specific advantages for different corrosion and temperature environments. Material selection depends on operating media, temperature, and pressure. Every piece includes Mill Test Certificate with verified chemical and mechanical properties.
Q: What pressure ratings does the flange duplex welding neck support?
A: The flange duplex welding neck is available in Class 150-2500 pressure classes per ASME standards. Pressure-temperature ratings depend on material grade and operating temperature. For example, A105 Class 150 handles 285 psi at ambient temperature. SASA FLANGE engineers can recommend the correct class for your specific operating conditions. Contact sales@sasaflange.com for pressure-temperature rating charts and selection guidance.
Q: What standards does the flange duplex welding neck comply with?
A: SASA FLANGEmanufactures the flange duplex welding neck per ANSI B16.5, ASME, DIN international standards. These standards govern dimensions, tolerances, materials, marking, and testing requirements. Our ISO 9001:2015 quality system ensures consistent compliance through calibrated inspection equipment and documented procedures. We also manufacture to project-specific specifications or customer drawings. Every product ships with full dimensional and material certification documentation.
Q: What is the delivery time for flange duplex welding neck?
A: SASA FLANGE maintains ready stock of standard flange duplex welding neck sizes and materials for 3-7 day delivery. Custom specifications require 15-30 days production time depending on complexity and quantity. We ship worldwide via sea freight, air freight, or express courier with professional packaging. Expedited production available for urgent orders. Contact sales@sasaflange.com or WhatsApp +86 13764965049 for current stock availability.
Packaging and Shipping
📦 Packing is quite important especially in the case of international shipments in which consignments pass through various channels to reach the ultimate destination, so we put special concern regarding packaging to ensure every piece arrives in perfect condition.
SASA FLANGE packs goods in numerous ways based on the product type and customer requirements. Our standard packaging options include:
- Plywood cases / crates – for heavy flanges and large-diameter products
- Pallets with shrink wrap – for bulk orders and standard sizes
- Individual poly bags + carton boxes – for small flanges and fittings
- Anti-rust oil coating + waterproof paper – for long-distance ocean freight
- Custom marking and labeling – per customer specifications or project requirements
All packaging meets international export standards. Special packing instructions are welcome upon request.
