RapidBolt
Offshore
Topsides and seawater piping.
Duplex stainless
Duplex 2205 Heavy Hex Nuts
Duplex 2205 heavy hex nuts (UNS S31803/S32205) for offshore, marine and chloride service, paired with duplex studs and quoted buy-to-order.
SUPPLY
Buy-to-order
LEAD TIME
Quoted per RFQ
RECORDS
EN 10204 3.1 / 3.2
GRADE OVERVIEW
Duplex 2205 nuts, specified correctly.
Duplex 2205 combines austenitic and ferritic microstructure for higher strength and better chloride stress-corrosion resistance than 316 stainless.
Projects often add ferrite count, corrosion testing or NORSOK M-650 qualified manufacture. List these on your RFQ.
- GRADE
- ASTM A194 / A276 / A479 or project specification
- MATERIAL
- UNS S31803 / S32205 duplex stainless steel
- MATCHED STUD
- Duplex 2205 stud bolts
- SIZES
- 1/4"–6" · M5–M150
- FORM
- Heavy hex, to ASME B18.2.2 or your drawing
Reference information only. Your specification and the supplied certificates govern; no stock or equivalence is implied.
WHERE IT IS SPECIFIED01 02 03
Typical applications
Desalination
Brine and seawater flanges.
Pulp & chemical
Chloride process equipment.
WHAT TO PUT ON YOUR RFQ
Quoted right the first time.
Size & thread
Nominal size from 1/4" to 6" or M5 to M150, thread pitch (UNC/8UN or metric) and quantity per line.
Matching studs & coating
Pair with Duplex 2205 stud bolts; state coating such as zinc, HDG or Xylan/PTFE and any oversize tapping.
Records & testing
EN 10204 3.1 or 3.2, hardness, proof load, PMI or impact testing as your specification requires.
QUESTIONS
Duplex 2205 FAQs
REQUEST A QUOTE
Send your Duplex 2205 nut requirement.
Send sizes, quantities, matched studs, coating, certificates and required date, or attach a line list or drawing. EMG confirms sourcing, records and lead time against your RFQ.
ISO 9001:2015 quality-managed supply
