Super Duplex 2507 Stud & Nut Sets
ASME B18.31.2 · ASME B18.2.2ASTM A276 / A479 — bar
Super Duplex 2507 stud and nut sets for desalination pressure flanges, combining chloride-resistant studs with explicitly matched nuts and traceable component lots.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution annealed and quenched
EN 10204 3.1 MTC + heat-number traceability
Super Duplex 2507 in this connection
High chromium, molybdenum and nitrogen support resistance to chloride pitting, alongside high duplex-stainless strength.
- Connection
- High-pressure seawater & concentrate flanges
- Critical dimensions
- Stud length · nut pattern · external / internal thread fit
Which standard is on your order?
Raw Material Specifications
Finished-Component Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Solution annealed and rapidly cooledSolution annealing followed by rapid cooling controls harmful precipitates and preserves the ferrite–austenite structure.
What we can make in Super Duplex 2507
Forms & dimension guide
Stud
Finished stud length covers the flange stack, gasket and both nut engagements. Full-length thread permits nut positioning from either end for cover removal and flange assembly.
Nuts
Match nut thread class and proof-load requirements to the stud. Regular and heavy-hex patterns need different socket clearances and bearing footprints around the flange holes.
- Product forms
- Full-thread stud + 2 nuts · Stud + 2 nuts + washers
- Dimensional control
- Stud length · nut pattern · external / internal thread fit
- Manufacturing
- Machine and thread the stud; manufacture mating nuts to their own pattern and thread class. Inspect each component before packing by set.
- Final condition
- Solution annealing and rapid cooling control phase balance and limit harmful intermetallic phases.
- Inspection
- Heat traceability · mechanical properties · specified phase-balance and corrosion tests
Where Super Duplex 2507 fits — and what matters
Water Treatment & Desalination
Filter housings and treatment-pump coversSuper Duplex 2507 fully threaded stud & nut sets supply the stud and two mating nuts for filter housings and treatment-pump covers as one assembly line item. Thread fit, nut pattern and stud length are coordinated before packing. The water stream, cleaning cycle and retained liquid define exposure at the installed part.
Offshore & Marine
Seawater pump and cooling-system coversSuper Duplex 2507 fully threaded stud & nut sets supply the stud and two mating nuts for seawater pump and cooling-system covers as one assembly line item. Thread fit, nut pattern and stud length are coordinated before packing. The assembled contact is exposed to saltwater, deposits and neighbouring metals.
Oil & Gas
Process valves and equipment closuresSuper Duplex 2507 fully threaded stud & nut sets supply the stud and two mating nuts for process valves and equipment closures as one assembly line item. Thread fit, nut pattern and stud length are coordinated before packing. Utility connections and pressure-boundary parts have separate acceptance requirements on the equipment drawing.
Same stud & nut set. Different material priorities.
Super Duplex 2507 material dataDuplex 2205
Duplex stainless combines higher yield strength than conventional austenitic grades with improved resistance to chloride stress-corrosion cracking.
Duplex 2205 Stud & Nut SetsInconel 625
Molybdenum and niobium provide solid-solution strength, combined with resistance to chloride pitting and crevice corrosion.
Inconel 625 Stud & Nut SetsHastelloy C-276
A nickel-chromium-molybdenum-tungsten alloy for severe process corrosion, including reducing acids and wet-chlorine environments.
Hastelloy C-276 Stud & Nut Sets316L
Molybdenum-bearing, low-carbon austenitic stainless steel for wet equipment and routine washdown.
316L Stud & Nut SetsFrom drawing to documented delivery
- 01Drawing & BOMGrade, condition and part dimensions
- 02Sample lotOptional · typically ~20 days
- 03Production & testingTypically 25–35 days
- 04Documents & dispatchHeat-linked lots and packing
Connection & acceptance
High-pressure seawater & concentrate flanges: Concentrate chemistry · flange pressure · phase-balance acceptance.
Material & final condition
Solution annealing and rapid cooling control phase balance and limit harmful intermetallic phases.
Connection inspection
Stud length · nut pattern · external / internal thread fit. Heat traceability · mechanical properties · specified phase-balance and corrosion tests.
Matching Kit
Flange Stud Bolt Kits
Build your Super Duplex 2507 stud & nut set enquiry
Upload drawing insteadQuestions about Super Duplex 2507 fully threaded stud & nut sets
What matters beyond choosing 2507 for the set?
Both stud and nut grades, thread fit and mechanical requirements belong on the order. Phase-balance and corrosion-test requirements apply to the specified component condition, with traceability maintained through set packing.
Technical references & photo credits
Catalogue photography shows product form. Application examples connect alloy properties to equipment duties; they are not customer installation records. Quantities, schedules and the inspection scope are confirmed in the quotation.