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ASTM A815 UNS S31803 Duplex Steel Fitting ASME B16.9 Buttweld Duplex 2205 Equal Tee

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ASTM A815 UNS S31803 Duplex Steel Fitting ASME B16.9 Buttweld Duplex 2205 Equal Tee

Brand Name : YUHONG

Model Number : ASTM A815 WPS31803 Duplex Steel Equal Tee

Certification : ABS , BV, LR , DNV, GL , KR, TUV , ISO

Place of Origin : CHINA

MOQ : 1pc

Payment Terms : L/C, T/T

Delivery Time : 7days

Packaging Details : Ply-wooden Case /Pallet

Product Name : Equal Tee

Standard : ASTM A815, ASME SA815

Material : Duplex Steel UNS S32750, S31803, S32760,

O.D. : 1/8”NB To 48”NB

W.T. : Schedule 10s - Schedule XXS

Form : Equal Tee, Reducer Tee

Type : Seamless, Welded

High Light : ASTM A815 WPS31803 Duplex Steel Tee, ASME B16.9 Buttweld Pipe Fittings

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ASTM A815 WPS31803 Duplex Steel Equal Tee ANSI ASME B16.9 Buttweld Pipe Fittings

ASTM A815 UNS S31803 Duplex Steel Fitting ASME B16.9 Buttweld Duplex 2205 Equal Tee" refers to a pipe fitting that is an equal tee (all three openings the same size) manufactured from duplex stainless steel grade UNS S31803 (commonly known as 2205), produced as a wrought buttweld fitting in compliance with ASTM A815 for material and heat treatment requirements, and dimensioned according to ASME B16.9 for factory-made buttwelding fittings.

Advantage: Duplex steels offers double the strength of 316L plus superior resistance to chloride corrosion and stress cracking.
Usage: The buttweld equal tee is widely used in offshore oil & gas, desalination, chemical processing, and heat exchanger systems to split flow into three equal paths under demanding corrosive conditions.

Equivalent Grades of ASTM A815 UNS S31803 Duplex Steel Pipe Fitting Equal Tee

JIS EN ISO UNS KS
SUS 329J3L 1.4462 X2CrNiMoN 22-5-3 S31803 STS 329J3L

Chemical Composition of ASTM A815 UNS S31803 Duplex Steel Pipe Fitting Equal Tee

Cr

Ni

Mo

C

W

Cu
24.0-26.0 6.0-8.0 3.0-4.0 0.030 Max 0.5-1.0 0.50-1.0

N

Mn

Si

P

S

Fe
0.2-0.3 1.00 Max 1.0 Max 0.03 Max 0.01 Max Balance

Mechanical Properties of ASTM A815 UNS S31803 Duplex Steel Pipe Fitting Equal Tee

Tensile Strength, ksi

.2% Yield Strength, ksi

% Elongation in 50mm

Hardness Max.
109 80 25 28 HRC

ASTM A815 covers wrought ferritic, ferritic/austenitic, and martensitic stainless steel pipe fittings. For duplex grades (UNS S31803/S32205), it specifies:

  • Fitting types: Elbows, tees, reducers, caps, lap joint stub ends, etc.

  • Manufacturing processes: Seamless or welded (with welding filler if required)

  • Heat treatment: Solution annealing followed by quenching (water or other rapid cooling)

  • Corrosion testing: Intergranular corrosion test per ASTM A262 (Practice E) may be required

  • Marking: Standard markings include ASTM A815, grade (e.g., WP-S31803 or S31803), size, schedule, heat number

Applications

  • Chemical & petrochemical processing
  • Oil & gas offshore platforms (seawater systems)
  • Desalination plants
  • Pulp & paper industry (digester, bleach plants)
  • Marine exhaust and firewater systems
  • Heat exchangers (as mentioned in your previous order – fin tube & tubesheet)

ASTM A815 UNS S31803 Duplex Steel Fitting ASME B16.9 Buttweld Duplex 2205 Equal Tee


Product Tags:

ASTM A815 Duplex Steel Fitting

      

UNS S31803 Buttweld Equal Tee

      

ASME B16.9 Duplex 2205 Tee

      
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