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Stainless Steel 321 Pipe Fittings stockist, ASTM A403 WP321 Stainless Steel Pipe Fittings, ASME B16.9 321 Fittings


Highly acclaimed stockist, presents best prices ever on ASTM A403 wp321 Pipe Fittings, ASTM A403 WP 321 Elbow, Stainless Steel 321 Buttweld Pipe Fittings


SS 321 Buttweld Fittings, MSS SP-43/SP-79 Grade 321 Stub End,Werkstoff No 1.4306 Buttweld Fitting, ASME/ANSI B16.9 WP 321 Reducer, ANSI B16.28 SS 321L Tee



321 Stainless Steel Pipe Fittings stockist
321 Stainless Steel Buttweld Pipe Fittings

We are stockist of Stainless Steel 321 Butt Weld Fittings that are produced in a variety of designs, style, specifications, grades and sizes, with each fitting serving an industry's need. Cromwell Distribution is a stockist & Stockholder of ASTM A403 WP 321 Pipe FittingsSS 321 Butt weld Pipe FittingsASTM A403 WP321 Stainless Steel Buttweld Pipe FittingsUNS S32100 Buttweld FittingStainless Steel 321 Butt weld Pipe FittingsSS 321 Elbow, ANSI B16.9 Stainless Steel 321 Reducer, ASTM A403 WP321 Fittings, Werkstoff No 1.4301 SS Buttweld Pipe Fittings ,  SS UNS S32100 Equal Tee ASTM A403 SS 321 Elbow, Stainless Steel 321 Butt weld Pipe Fitting for the petrochemical, nuclear, gas and oil industries, Norsok Ed4, BP, Saudi Aramco, SABIC and Shell approved, producing 321 Stainless Steel Pipe Fittings, WP321 Tee in accordance to ANSI B16.9, ANSI B16.28, MSS SP-43, or MSS SP-79 .

We are Stockist & (ASME B16.9, DIN, EN), ASTM A403 WP321 Stainless Steel Reducer, A403 WP321 Stainless Steel Long/ Short Radius Elbows, A403 WP321 Stainless Steel 90º Elbows, 45º Elbows, ASTM A403 WP321 Stainless Steel ElbowStainless Steel 321 Long Radius Elbow , SS 321 Tees, SS 321 Crosses, 321 SS Pipe Fittings, SS 321 Couplings, SS 321 Reducers, SS 321 Inserts, SS 321 Caps, Stainless Steel 321 Nipples, SS Grade WP321 Pipe Elbow, ASTM A403 WP321 Stainless Steel Cross, SS WP321 Pipe Fittings, SS UNS S32100 Buttweld FittingASME SA403M SS 321 Reducer, Stainless Steel 321 Bends, 321 Stainless Steel socket weld tees, 321 Stainless Steel socket weld cross, SS 321 Unions for the Oil, Gas, Nuclear, Petro-Chemical and Process Industries.


What is 321 Stainless Steel Buttweld Fittings ?

Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850 °C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900 °C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.

Like other austenitic grades, 321 have excellent forming and welding characteristics, are readily brake or roll formed and have outstanding welding characteristics. Post-weld annealing is not required. They also have excellent toughness, even down to cryogenic temperatures. Grade 321 does not polish well, so is not recommended for decorative applications.


Buttweld Stainless Steel 321 Pipe Fittings Specifications


Specifications : ASTM A403 wp321 / ASME SA403 wp321
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type : Seamless / Welded / Fabricated
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS, Custom Thickness
Specification : ASME: ANSI B16.9, ANSI B16.28, MSS-SP-43, DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, EN: EN10253-1, EN10253-2


321 Stainless Steel Pipe Fittings

Seamless/Welded 100% Radiography Tested
Products Size
ASTM A403 WP321 Stainless Steel Elbows – Long Radius ASTM A403 WP321 Stainless Steel Stub Ends Sizes 1/2″ – 48″
ASTM A403 WP321 Stainless Steel Elbows – Short Radius ASTM A403 WP321 Stainless Steel Crosses
ASTM A403 WP321 Stainless Steel Reducing Elbows ASTM A403 WP321 Stainless Steel Reducing Crosses
ASTM A403 WP321 Stainless Steel 45° Elbows ASTM A403 WP321 Stainless Steel 180° LR Return Bends
ASTM A403 WP321 Stainless Steel Tees ASTM A403 WP321 Stainless Steel 180° SR Return Bends
ASTM A403 WP321 Stainless Steel Tees ASTM A403 WP321 Stainless Steel Pipe Bends / Piggable Bends
ASTM A403 WP321 Stainless Steel Reducers ASTM A403 WP321 Stainless Steel Couplings
ASTM A403 WP321 Stainless Steel Concentric Reducers ASTM A403 WP321 Stainless Steel Pipe Nipples
ASTM A403 WP321 Stainless Steel Eccentric Reducers ASTM A403 WP321 Stainless Steel 90° LR / SR Elbow
ASTM A403 WP321 Stainless Steel 3D Elbow ASTM A403 WP321 Stainless Steel End Caps
ASTM A403 WP321 Stainless Steel 5D Elbow ASTM A403 WP321 Stainless Steel 45° LR / SR Elbow


SS 321 Pipe Fittings Chemical Composition

Grade C Mn Si P S Cr Mo Ni N Other
321 min.
max

0.08
2.00 0.75 0.045 0.030 17.0
19.0
9.0
12.0
0.10 Ti=5(C+N)
0.70

SS 321 Pipe Fittings Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
321 515 205 40 95 217

SS 321 Pipe Fittings Equivalent Grades

Stainless Steel Tradename UNS no. Werkstoff No. Density (g/cm3)
321 321 Stainless S32100 1.4541 7.92

ASTM A403 WP321 SS Pipe Fittings Dimensions

Nominal
Pipe
Size
Outside
Diameter
Reducers
Reduced from
(inches)
(mm) (inches) Reduced to
(inches)
Concentric & Eccentric Length
(inches)
1/2 21.3 0.840 1/4 1 1/2
3/8 1 1/2
3/4 26.7 1.050 3/8 2
1/2 2
1 33.4 1.315 3/8 2
1/2 2
3/4 2
1 1/4 42.2 1.660 1/2 2
3/4 2
1 2
1 1/2 48.3 1.900 1/2 2 1/2
3/4 2 1/2
1 2 1/2
1 1/4 2 1/2
2 60.3 2.375 3/4 3
1 3
1 1/4 3
1 1/2 3
2 1/2 73.0 2.875 1 3 1/2
1 1/4 3 1/2
1 1/2 3 1/2
2 3 1/2
3 88.9 3.500 1 3 1/2
1 1/2 3 1/2
2 3 1/2
2 1/2 3 1/2
3 1/2 101.6 4.000 1 1/4 4
1 1/2 4
2 4
2 1/2 4
3 4
4 114.3 4.500 1 1/2 4
2 4
2 1/2 4
3 4
3 1/2 4
5 141.3 5.563 2 5
2 1/2 5
3 5
3 1/2 5
4 5
6 168.3 6.625 2 1/2 5 1/2
3 5 1/2
3 1/2 5 1/2
4 5 1/2
5 5 1/2
8 219.1 8.625 3 6
3 1/2 6
4 6
5 6
6 6
10 273.1 10.750 4 7
5 7
6 7
8 7
12 323.9 12.750 5 8
6 8
8 8
10 8

ASTM A403 WP321 SS Caps, Straight Tees & Crosses, Stub Ends Pipe Fittings Dimension:
Nominal
Pipe
Size
(inches)
Outside
Diameter
Caps Straight Tees Straight Crosses Stub Ends
(mm) (inches) Length
(inches)
Center to End
(inches)
Center to End
(inches)
Lap Diameter
(inches)
Long Length
(inches)
Short Length
(inches)
1/2 21.3 0.840 1 1 1 3/8 3 2
3/4 26.7 1.050 1 1 1/8 1 11/16 3 2
1 33.4 1.315 1 1/2 1 1/2 1 1/2 2 4 2
1 1/4 42.2 1.660 1 1/2 1 7/8 1 7/8 2 1/2 4 2
1 1/2 48.3 1.900 1 1/2 2 1/4 2 1/4 2 7/8 4 2
2 60.3 2.375 1 1/2 2 1/2 2 1/2 3 5/8 6 2 1/2
2 1/2 73.0 2.875 1 1/2 3 3 4 1/8 6 2 1/2
3 88.9 3.500 2 3 3/8 3 3/8 5 6 2 1/2
3 1/2 101.6 4.000 2 1/2 3 3/4 3 3/4 5 1/2 6 3
4 114.3 4.500 2 1/2 4 1/8 4 1/8 6 3/16 6 3
5 141.3 5.563 3 4 7/8 4 7/8 7 5/16 8 3
6 168.3 6.625 3 1/2 5 5/8 5 5/8 8 1/2 8 3 1/2
8 219.1 8.625 4 7 7 10 5/8 8 4
10 273.1 10.750 5 8 1/2 8 1/2 12 3/4 10 5
12 323.9 12.750 6 10 10 15 10 6

ASTM A403 WP321 Stainless Steel Elbows and Returns Pipe Fittings Dimension:
Nominal
Pipe
Size
(inches)
Outside
Diameter
90° Elbows 45°Elbows 180° Returns
Long Radius Short Radius Long Radius Long Radius
(mm) (inches) Center to Face
(inches)
Center to Face
(inches)
Center to Face
(inches)
Radius
(inches)
Center to Center
(inches)
Back to face
(inches)
1/2 21.3 0.840 1 1/2 5/8 2 1 7/8
3/4 26.7 1.050 1 1/8 7/16 2 1/4 1 11/16
1 33.4 1.315 1 1/2 1 7/8 3 2 3/16
1 1/4 42.2 1.660 1 7/8 1 1/4 1 3 3/4 2 3/4
1 1/2 48.3 1.900 2 1/4 1 1/2 1 1/8 3 4 1/2 3 1/4
2 60.3 2.375 3 2 1 3/8 4 6 4 3/16
2 1/2 73.0 2.875 3 3/4 2 1/2 1 3/4 5 7 1/2 5 3/16
3 88.9 3.500 4 1/2 3 2 6 9 6 1/4
3 1/2 101.6 4.000 5 1/4 3 1/2 2 1/4 7 10 1/2 7 1/4
4 114.3 4.500 6 4 2 1/2 8 12 8 1/4
5 141.3 5.563 7 1/2 5 3 1/8 10 15 10 5/16
6 168.3 6.625 9 6 3 3/4 12 18 12 5/16
8 219.1 8.625 12 8 5 12 24 16 5/16
10 273.1 10.750 15 10 6 1/4 15 30 20 3/8
12 323.9 12.750 18 12 7 1/2 18 36 24 3/8

Stainless Steel 321 High Pressure Pipe Fittings Standards


ASTM A403 – ASME SA403 Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ASME B16.9 Factory-Made Wrought Buttwelding Fittings
MSS SP-43 Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
MSS SP-95 Swage(d) Nipples and Bull Plugs
BS3799 Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry
Origin & Mills Japanese Origin, Korean Origin, European Origin, US Origin, Ukraine Origin, Russian Origin, Japanese Mills, Korean Mills, European Mills, US Mills, Russian Mills, Ukraine Mills

ASTM A403 wp321 Pipe Fittings

  •  321 Stainless Steel Elbow
  •  321 Stainless Steel Tee
  •  321 Stainless Steel Reducer
  •  321 Stainless Steel Bends
  •  321 Stainless Steel Crosses
  •  321 Stainless Steel End Caps
  •  321 Stainless Steel Lap Joint Stub End
  •  321 Stainless Steel 90° Long Radius Elbow
  •  321 Stainless Steel 90° Short Radius Elbow
  •  321 Stainless Steel 45° Long Radius Elbow
  •  321 Stainless Steel 45° Short Radius Elbow
  •  321 Stainless Steel 180° Long Radius Elbow
  •  321 Stainless Steel 180° Short Radius Elbow
  •  321 Stainless Steel 1D Elbow
  •  321 Stainless Steel 1.5D Elbow
  •  321 Stainless Steel 3D Elbow
  •  321 Stainless Steel 5D Elbow
  •  321 Stainless Steel Seamless Buttwelding 45° and 90° Elbows
  •  321 Stainless Steel welded elbow
  •  321 Stainless Steel Seamless Buttwelding 180° Returns
  •  321 Stainless Steel Straight Tees and Crosses
  •  321 Stainless Steel Reducing Outlet Tees and Crosses
  •  321 Stainless Steel Equal Tee
  •  321 Stainless Steel Reducing Tee
  •  321 Stainless Steel Equal Cross
  •  321 Stainless Steel Rducing Cross
  •  321 Stainless Steel Reducers
  •  321 Stainless Steel Concentric Reducer
  •  321 Stainless Steel Eccentric Reducer
  •  321 Stainless Steel Stub End
  •  321 Stainless Steel Lap Joint Stub Ends
  •  321 Stainless Steel Long Stubend
  •  321 Stainless Steel Short Stubend
  •  321 Stainless Steel Pipe Cap
  •  321 Stainless Steel End Cap
  •  321 Stainless Steel Collar
  •  321 Stainless Steel Swedge Nipple
  •  321 Stainless Steel Pipe Nipples
  •  321 Stainless Steel Barrel Nipple
  •  321 Stainless Steel Reducing Nipple
  •  321 Stainless Steel Bend
  •  321 Stainless Steel Long Radius Bend
  •  321 Stainless Steel Piggable Bend

Stainless Steel 321 Buttweld Pipe Fittings - Marking & Packing

Products are packaged to ensure that there is no damage during transit. packaging is done in wooden cases. All 321 SS buttweld fittings are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.


321 SS Pipe Fittings - Value Added Services


  • Hot Dipped Galvanizing
  • Epoxy & FBE Coating
  • Electro Polish

Contact Cromwell Distribution for best offer of Stainless Steel 321 Butt weld Fittings
Call: (361) 510-2964
Emailsales@cromwelldistribution.com