Description
Product Specifications and Technical Data
For strong acids and severe corrosion
- ✓Good mechanical & physical properties
- ✓Excellent corrosion resistance (HCl and H2SO4 iso-corrosion curves)
- ✓Zirconium 702 / 705: Grades, chemistry, specs
- ✓Datasheet for Zirconium
- ✓Weld neck flange features and benefits
Commercially pure zirconium weld neck flanges, also known as zirconium 702, are most well-known for their superior corrosion resistance in some of the harshest environments that include:
It is also a metal that offers industry unique properties. It does not absorb neutrons, making it ideal for use in nuclear power and at low temperatures it is superconductive, making it ideal for super magnets.
Hydrochloric Acid ResistanceWhat makes Zirconium weld neck flanges particularly useful to industry is their resistance to hydrochloric acid where they exhibit a corrosion rate of less than 5mpy at all concentrations and temperatures in excess of the boiling point. Even in 37% HCI, Zirconium fasteners do not begin to show substantial corrosion until 130°C (266°F). This performance is unmatched by any other engineering metal or alloy with the exception of tantalum. To give you a point of reference, Hastelloy C276 will experience 288 mpy (mils per year) of corrosion in just 10% HCl at the boiling point while Zirconium weld neck flanges will have a nil corrosion rate even when aerated. As a result, Zirconium fasteners are most beneficial when used is in hydrochloric acid processes with temperatures above the boiling point and in the absence of oxidizing impurities.
General Acid ResistanceIn addition to its impressive performance in hydrochloric acid, in sulfuric acid, Zirconium weld neck flanges are resistant to temperatures well above boiling and at acid concentrations up to 70%. Only one other metal, tantalum, is equal to zirconium in nitric acid, where zirconium can be used in all concentrations up to 90% and temperatures up to 200°C. Zirconium is also resistant to most organic media and is considered one of the most corrosion resistant materiala in virtually all acetic acid solutions.
When Zirconium Does Not PerformZirconium is known for its tough resistance to acid corrosion, but there are instances that it is not recommended to use Zirconium. Though aeration does not affect the resistance of Zirconium weld neck flanges, even small amounts of oxidizing media such as ferric or cupric chlorides will greatly decrease its corrosion resistance. This often occurs from upstream equipment that carry corrosion contaminants into the zirconium equipment, making process control of upstream equipment critical in maintaining the corrosion resistance of Zirconium. In addition, acid in the presence of oxidizing halide contaminants and can accelerate the rate of attack on Zirconium fasteners even at low concentrations. Use of Zirconium weld neck flanges in the presence of fluoride ions is also not recommended, even at low concentrations.
Applications• Nuclear industry utilize Zirconium weld neck flanges for its inability to absorb neutrons• Zirconium has been used for decades in over 20 years in dye manufacturing for its incredible corrosion resistance and inertness.• Chemical processing plants often utilized Zirconium in the production of polymers that utilize strong acids .• Commonly used with nitric acid for the production ammonium nitrate for fertilizers.
Flange Types Available: Blind Flanges, Lap Joint Flanges, Slip On Flanges, Socket Weld Flanges, Threaded Flanges, Weld Neck Flanges
Flange Dimensions Reference
Precision-Engineered flanges welding for Critical Industrial Service
The flanges welding 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: flanges welding Specifications
SASA FLANGE manufactures the flanges welding 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 flanges welding Performs
Oil and gas facilities install the flanges welding 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 flanges welding Shipped Fast – Request a Quote Today
SASA FLANGE manufactures the flanges welding 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. |
flanges welding Application Scenario
The flanges welding 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 flanges welding ensures leak-free connections and long-term service reliability in demanding environments.
flanges welding installed in industrial piping system
Frequently Asked Questions
Q: What is a flanges welding used for?
A: The flanges welding 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 flanges welding?
A: SASA FLANGE offers the flanges welding 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 flanges welding support?
A: The flanges welding 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 flanges welding comply with?
A: SASA FLANGEmanufactures the flanges welding 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 flanges welding?
A: SASA FLANGE maintains ready stock of standard flanges welding 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.
