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Stainless Steel 321 Pipe Fittings

Stainless steel 321 buttweld fittings


Table of Content



Find ASTM A403 WP321 Elbow Properties and Chemical Composition Below

Chemical Composition of SS 321 BW Fittings


C Si Mn S P Ni Cr
0.08 max
0.75 Max
2 max
0.030 max
0.045 max
8 - 11
18 - 20

Africa's favourite supplier ship to Lagos with in 15 to 20 days

A403 WP321 Butt Welded Fittings Delivery Schedules


Country  Name  Delivery Time (Days)
Nigeria  15-20
Madagascar  15-20
Ghana  15-20
Kenya  15-20
Angola  15-20

Specification of stainless steel 321 buttweld fittings


ASTM A403 WP304L Buttweld Fitting

321 Stainless Steel Pipe Fitting Size

  • 1/2" – 24" (Seamless fittings)
  • 24 – 96" (Welded fittings)
  • Fabricated fittings : custom
A403 WP321 BW Fittings

A403 WP321 BW Fittings Thickness Tolerance

  • +/-12.5%
  • custom
A403 Gr WP321 Welded Fittings

A403 Gr WP321 Welded Fittings Strength

  • Yield strength: 205 MPa
  • Tensile stress: 515 MPa

AISI 321 Stainless Steel Seamless Fittings

AISI 321 Stainless Steel Seamless Fittings American Standard

  • ANSI/ ASME B16.9
  • ANSI/ ASME B16.25
  • ANSI/ ASME B16.28
  • MSS-SP 119
  • MSS-SP-43
  • MSS-SP-95
  • MSS-SP-83
ASTM A403 Gr WP 321 BW Fittings

ASTM A403 Gr WP 321 BW Fittings Meet Requirements

  • ISO 15156
  • NACE TM-0284
  • HIC tested
  • Sour service
  • IBR
  • NACE MR0175
  • MTC EN 10204 3.1/ 3.2 certificate
  • NACE MR0103
  • NORSOK
ASTM A403 Grade WP321 Pipe Fittings

ASTM A403 Grade WP321 Pipe Fittings Manufacturing Methods

  • Hot forming
  • Mandrel
SA 403 WP 321 Stub End

SA 403 WP 321 Stub End ASTM Standard and Specification

  • ASTM A403 WP321-s (Seamless fittings)
  • ASTM A403 WP321-x (Welded fittings)
AISI 321 Stainless Steel BW Fittings

AISI 321 Stainless Steel BW Fittings Temperature Range

  • 538-870°C
SS 321 Seamless Fitting

SS 321 Seamless Fitting Schedules

  • XXH
  • SCH 60
  • SCH 80
  • SCH 10
  • SCH 160
  • STD
  • SCH 20
  • XH
  • SCH 40
ASME SA403 WP321 Pipe Fittings

ASME SA403 WP321 Pipe Fittings Ends

  • Bevelled
  • Plain Bevel
AISI 321 Stainless Steel BW Fittings

AISI 321 Stainless Steel BW Fittings Manufacturing Forms

  • ASME SA403 WP321 elbow
  • SUS 321 stainless stub end
  • Stainless 321 tee
  • 321 Stainless Steel pipe bend
  • A403 WP321 cross
  • Reducer
  • AISI 321 material cap
SA 403 WP 321 Butt Welded Fittings

SA 403 WP 321 Butt Welded Fittings DIN Standards

  • DIN 2616-2 (Concentric Reducer)
  • DIN 2615-1 (Tee)
  • DIN 28011 (Torispherical heads)
  • DIN 2618 (saddle)
  • DIN 2617 (Caps)
  • DIN 2616-1 (Eccentric Reducer)
  • DIN 2605-2 (Elbow)
  • DIN 2615-2 (Tee)
  • DIN 2605-1 (Elbow)
ASTM A403 Gr WP 321 Welded Fittings

ASTM A403 Gr WP 321 Welded Fittings Bending Methods

  • Mandrel Bending
  • Hot Induction Bending
  • Ram-Type Bending
  • Roll Bending
  • Rotary Draw Bending
SA 403 Grade 321 Pipe Bend

SA 403 Grade 321 Pipe Bend Radius

  • 5D
  • 3D
  • 10D
  • 8D
  • 4D
  • 6D
321 Stainless Steel Bend

321 Stainless Steel Bend Angle

  • 60°
  • 90°
  • 180°
  • 15°
  • 30°
  • 45°
  • 135°
A403 WP321 Buttweld Pipe Fittings

A403 WP321 Buttweld Pipe Fittings JIS Standard

  • JIS B2312
  • JIS B2313
SS 321 Weld Fittings

SS 321 Weld Fittings GOST Standards

  • GOST 17375
  • GOST 17375
  • GOST 17379
  • GOST 17378
  • GOST 17376
A403 Gr WP321 Seamless Pipe Fittings

A403 Gr WP321 Seamless Pipe Fittings

  • EN 10253-2
AISI 321 SS Butt Welded Joint

AISI 321 SS Butt Welded Joint Applicable Fluid

  • Gas
  • Oil
  • Air
  • Steam
  • Water
SA 403 WP 321 Seamless Fittings

SA 403 WP 321 Seamless Fittings Marking

  • Heat number
  • Grade
  • Size
  • Dimensional standard – ASME B16.9
A403 Gr WP321 Welded Fittings

A403 Gr WP321 Welded Fittings ISO Standard

  • ISO 5251
ASTM A403 Grade WP321 Butt Welding Fittings

ASTM A403 Grade WP321 Butt Welding Fittings

  • Custom
  • Carton Box
  • Wooden Cases
  • Wooden Pallet
321 Stainless Steel Weldable Pipe Fittings

321 Stainless Steel Weldable Pipe Fittings Classes

  • CR321 : Corrosion Resistant
  • ASTM A403 WP321-S (Seamless Fittings)
  • ASTM A403 WP321-W (Welded Fittings)
  • ASTM A403 WP321-WU
  • ASTM A403 WP321-WX
SA 403 WP 321 Pipe Fittings

SA 403 WP 321 Pipe Fittings Packaging

  • Wooden Pallet
  • Custom as per buyer choice
  • Wooden Cases
  • Carton Box

Stainless steel 321 buttweld fittings specifications  

Value added services of SS 321 buttweld fittings


  • → Heat treatment
  • → Electro polish
  • → Annealed
  • → Rolling
  • → Pickling
  • → Bending
  • → Minor fabrication
  • → Forging
ss 321 buttweld fittings


Manufacturer of SS 321 Buttweld Fittings in Size Ranging From 1/2" - 24", Check Dimension Chart

Dimensions of ASTM A403 WP321 elbow


Nominal fitting Size OD 45° Elbows 180° Returns 90° Elbows
(inch)   LR LR SR LR SR
  (inch) (mm) Center to face (inch) Radius (inch) Back to face (inch) Center to center (inch) Center to face (inch) Center to face (inch)
1/2 0.840 21.3 5/8   1 7/8 2 – 1 1/2
1 1.315 33.4 7/8   2 3/16 3 1 1 1/2
1 1/4 1.660 42.2 1   2 3/4 3 3/4 1 1/4 1 7/8
2 2.375 60.3 1 3/8 4 4 3/16 6 2 3
3 1/2 4.000 101.6 2 1/4 7 7 1/4 10 1/2 3 1/2 5 1/4
3 3.500 88.9 2 6 6 1/4 9 3 4 1/2
2 1/2 2.875 73.0 1 3/4 5 5 3/16 7 1/2 2 1/2 3 3/4
5 5.563 141.3 3 1/8 10 10 5/16 15 5 7 1/2
3/4 1.050 26.7 7/16   1 11/16 2 1/4 – 1 1/8
4 4.500 114.3 2 1/2 8 8 1/4 12 4 6
10 10.750 273.1 6 1/4 15 20 3/8 30 10 15
6 6.625 168.3 3 3/4 12 12 5/16 18 6 9
12 12.750 323.9 7 1/2 18 24 3/8 36 12 18
1 1/2 1.900 48.3 1 1/8 3 3 1/4 4 1/2 1 1/2 2 1/4
8 8.625 219.1 5 12 16 5/16 24 8 12

Types of stainless steel 321 pipe fittings


321 stainless steel elbow

Stainless steel 321 elbow

321 stainless steel bends

SS 321 bends

Stainless steel 321 tee

ASTM A403 WP321 321 tee

Stainless steel 321 buttweld fittings

Stainless steel 321 buttweld fittings

To Know About ASME SA403 WP321 Tee Tensile and Yield Strength, Check Mechanical Properties

Mechanical properties of SS 321 reducer


Grade Density Tensile strength Melting points Elongation Yield strength(0.2% offset)
SS 8.0g/ cm3 PSI-75000, MPa-515 1400°C (255°F) 35% PSi-30000, MPa-205
Get PMI and HIC Tested 321 Stainless Steel Reducer at Low Cost

Testing methods of SS 321 pipe fittings


  • → Hydrotest
  • → Non destructive testing
  • → Destructive testing
  • → Proof test
  • → Metallurgical test
A403 Gr WP321 Seamless Pipe Fittings in Plain, Compound Bevel and Bevelled Ends, Check Equivalent Properties

Equivalent properties of stainless steel 321 tee


Standard Werkstoff nr. UNS JIS BS GOST AFNOR EN
SS 1.4301 S30400 SUS 304 304S31 08X18H10 Z7CN18-09 X5CrNi18-10

Applications of SS 321 tee


  • Petrochemical Industry
  • Chemical Industry
  • Power Plant Industry
  • Pharmaceuticals Industry
  • Energy Industry
  • Food Processing Industry
  • Aerospace Industry
  • Pulp & Paper Indusry
  • Refining Industry

Other types of WNR. 1.4541 SS 321 pipe fittings


Stainless steel 321 pipe fittings SS 321 buttweld fittings
ASME 16.9 SS piggable bend AISI B16.28 SS reducing elbow
SS 321 pipe fittings SS 321 buttweld fitting supplier
Stainless steel 321 unions SS 321 Cross
SS 321 pipe fittings SS 321 buttweld fitting supplier
ANSI B16.9 SS buttweld elbow exporter SS 321 end cap manufacturer
Stainless Steel UNS S32100 Caps SS 321 Elbow
Industrial SS 321 pipe fittings SS 321 tee exporter
SS 321 Inserts SS 321 Street Elbows
ASTM A403 90° elbow supplier SS 321 Reducing Nipple
SS 321 reducers SS 321 45° Elbows
SS 321 buttweld elbow Stainless Steel WNR. 1.4541 Fittings
SSl 321 Stub ends stockists SS 321 seamless Buttweld Fittings