Stainless Steel 321 Pipe Fittings

 Stainless Steel 321 Pipe Fittings

An alloy with austenitic microstructure, they have good weldability because they are stabilised with titanium. The chemical composition of 321 fittings is similar to grade 304.

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Buy ASTM A403 WP321 elbow and SS 321 tee from verified suppliers in UAE

A403 WP321 buttweld fittings specification

A403 Gr WP321 buttweld fittings sizes A403 WP321 buttweld fittings strength 321 stainless steel welded fittings life
  • SA 403 Grade 321 welded fittings : 24 – 96″ (BW)
  • ASME SA403 WP321 fabricated fittings : custom
  • ASTM A403 WP 321 seamless fittings : 1/2″ – 24″ (BW)
  • Tensile stress: 515
  • Yield strength: 205
  • For 20 years
ASTM A403 Gr WP 321 BW fittings meet the requirements AISI 321 stainless steel butt welded fittings American standard 321 stainless steel pipe fittings thickness tolerance
  • MTC EN 10204 3.1/ 3.2 certificate
  • ISO 15156
  • NACE TM-0284
  • HIC tested
  • IBR
  • NORSOK
  • Sour service
  • NACE MR0175
  • NACE MR0103
  • ANSI/ ASME B16.28 (1/2″-24″)
  • ANSI/ ASME B16.9 (1/2″-48″)
  • ANSI/ ASME B16.25 (butt welding ends)
  • MSS-SP-83
  • MSS-SP-43 (1/2″-24″ )
  • MSS-SP-95
  • MSS-SP 119 (SA 403 WP321 belled end elbow)
  • custom
  • +/-12.5%
American standard & specification ASTM A403 Grade WP321 buttweld pipe fittings manufacturing technique ASTM A403 WP321 elbow temperature
  • Seamless fittings: ASTM A403 WP321-s
  • Welded fittings: ASTM A403 WP321-x

All above Stainless Steel 321 Pipe Fittings suppliers are verified & exports
Stainless Steel 321 Pipe Fittings with MTC 3.1 to Saudi Arabia, USA, South Africa, Egypt & Oman

  • Mandrel
  • Hot forming
  • 538-870°C
SA 403 WP 321 butt welded joint schedule chart AISI 321 stainless steel butt welded fittings testing reqirements Ends of AISI 321 stainless steel buttweld fittings
  • SCH 60
  • STD
  • XH
  • XXH
  • SCH 80
  • SCH 160
  • SCH 10
  • SCH 20
  • SCH 40
  • HIC tested
  • Positive Material Identification (PMI)
  • Hyrdrostatic test (according to ASTM A960/ A960M)
  • Magnetic Particle Examination (For above Sch 80 SS 321 fittings bevel ends)
  • Ultrasonic test

Order custom size to verified Stainless Steel 321 Pipe Fittings suppliers in UAE,
European, USA contact now via mail or live chat

  • Plain Bevel
  • Compound Bevel
  • Bevelled
SS 321 butt weld fittings bend radius ASME SA403 WP321 pipe bend angle 7 manufacturing forms of SA 403 Grade 321 butt welded fittings
  • 3D
  • 6D
  • 8D
  • 10D
  • 4D
  • 5D
  • 15°
  • 22.5
  • 60°
  • 90°
  • 135°
  • 180°
  • 30°
  • 45°
  • SUS 321 stainless elbow
  • 321 Stainless Steel cap
  • ASME SA403 WP321 stub end
  • AISI 321 material pipe bend
  • Stainless 321 cross
  • A403 WP321 tee
  • SA403 WP321 reducer
AISI 321 stainless steel butt welded fittings testing & inspection SA 403 WP 321 butt welded joint DIN standards (Germany) SA 403 Grade 321 weldable pipe fittings bending method
  • Ultrasonic test
  • HIC tested
  • Positive Material Identification (PMI)
  • 100% Radiography Tested
  • DIN 2617 (Caps)
  • DIN 2605-1 (Elbow)
  • DIN 2618 (saddle)
  • DIN 2615-1 (Tee)
  • DIN 2615-2 (Tee)
  • DIN 28011 (Torispherical heads)
  • DIN 2605-2 (Elbow)
  • DIN 2616-2 (Concentric Reducer)
  • DIN 2616-1 (Eccentric Reducer)
  • Roll Bending
  • Mandrel Bending
  • Rotary Draw Bending
  • Hot Induction Bending
  • Ram-Type Bending
ASTM A403 Gr WP 321 BW fittings JIS standard
(Japan)
GOST standard (Russia) 321 stainless steel welded fittings EN standards (Europe)
  • JIS B2313
  • JIS B2312
  • GOST 17375 (induction elbow)
  • GOST 17378
  • GOST 17379
  • GOST 17375
  • GOST 17376
  • EN 10253-2
S32100 stainless steel weld fittings marking SA 403 Grade 321 weldable pipe fittings packaging A403 WP321 buttweld fittings applicable fluids
  • Size
  • Dimensional standard – ASME B16.9
  • Manufacturers name
  • Grade
  • Heat number
  • Carton Box
  • Custom as per buyer choice
  • Wooden Cases
  • Wooden Pallet
  • Steam
  • Gas
  • Oil
  • Water
  • Air
SS 321 butt weld fittings standard Classes Of A403 Gr WP321 welded fittings
  • ISO 5251 – 321 SS butt welding fittings
  • ASTM A403 WP321-WX
  • ASTM A403 WP321-WU
  • ASTM A403 WP321-S : seamless fittings
  • ASTM A403 WP321-W : welded fittings
  • CR321 : corrosion resistant

ASME SA403 WP321 concentric/eccentric reducer at factory price, get quotations from different seamless 321 stainless steel pipe cap manufacturers in Dubai

Types 321 Stainless Steel pipe bend

SA 403 WP321 45 degree bend

SA 403 WP321 45 degree bend

A403 WP321 90 deg bend

A403 WP321 90 deg bend

ASME SA403 WP321 180 deg pipe bend

ASME SA403 WP321 180 deg pipe bend

SA 403 Gr 321 long radius bend

SA 403 Gr 321 long radius bend

SA 403 Grade 321 short radius bend

SA 403 Grade 321 short radius bend

SAE 321 2.5D pipe bend

SAE 321 2.5D pipe bend

321 SS 3D pipe bend

321 SS 3D pipe bend

SS UNS S32100 hot induction bend

SS UNS S32100 hot induction bend

Type 321 stainless steel mitered pipe bend

Type 321 stainless steel mitered pipe bend

Types of ASTM A403 WP321 elbow

Stainless Steel 321 45 deg elbow

Stainless Steel 321 45 deg elbow

ASTM A403 WP321 90 deg elbow

ASTM A403 WP321 90 deg elbow

ASTM A403 Grade WP321 180 deg elbow

ASTM A403 Grade WP321 180 deg elbow

SS 321 long radius elbow

SS 321 long radius elbow

321 stainless steel short radius elbow

321 stainless steel short radius elbow

ASTM A403 Gr WP 321 90 deg long radius elbow

ASTM A403 Gr WP 321 90 deg long radius elbow

ASTM A 403 Gr.WP321-WX 90 deg short radius elbow

ASTM A 403 Gr.WP321-WX 90 deg short radius elbow

ASTM A403 WP321 45 deg short radius elbow

ASTM A403 WP321 45 deg short radius elbow

A403 Gr WP321 45 deg long radius elbow

A403 Gr WP321 45 deg long radius elbow

ASTM A 403 WP 321 1.5D elbow

ASTM A 403 WP 321 1.5D elbow

A 403 WP 321 3D elbow

A 403 WP 321 3D elbow

SA 403 WP 321 2D elbow

SA 403 WP 321 2D elbow

 

Contact top 10 Stainless Steel 321 Pipe Fittings suppliers & stockists for beveled edge or custom drawing.

AISI 321 stainless steel tee

UNS S32100 buttweld tee

UNS S32100 buttweld tee

A403 WP321 equal tee

A403 WP321 equal tee

SA403 WP321 reducing tee

SA403 WP321 reducing tee

WP321 lateral tee

WP321 lateral tee

1.4541 stainless steel barred tee

1.4541 stainless steel barred tee

EN 1.4541 Y tee

EN 1.4541 Y tee

 

  • ASTM A403 WP321 reducing outlet tees
  • AISI 321 swept tee
  • SS 321 straight tees
  • A403 WP321 saddle tee

Type 321 Stainless Steel reducer

ASTM A403 WP321 SCH40 pipe reducer

ASTM A403 WP321 SCH40 pipe reducer

AISI 321 stainless concentric reducer

AISI 321 stainless concentric reducer

A403 Gr WP321 eccentric reducer

A403 Gr WP321 eccentric reducer

 

ASTM A403 WP321 stub end & cap

A403 gr WP321 pipe cap

A403 gr WP321 pipe cap

Large diameter SS 321 end caps

Large diameter SS 321 end caps

S32100 stainless steel big size pipe end cap

S32100 stainless steel big size pipe end cap

A403 WP321 long stub end

A403 WP321 long stub end

ASTM A403 WP321 short stub end

ASTM A403 WP321 short stub end

DIN 1.4541 lap joint stub end

DIN 1.4541 lap joint stub end

 

  • ASTM A403 WP 321 SS lap joint stub end
  • AISI 321 stainless steel butt welded hemi-head pipe cap
  • SA403 WP321 collar

Inox 321 buttweld cross fittings

Werkstoff No 1.4541 equal cross

Werkstoff No 1.4541 equal cross

321 stainless steel reducing cross

321 stainless steel reducing cross

SUS 321 straight crosses

SUS 321 straight crosses

 

  • AISI 321 stainless steel reducing outlet crosses
  • ASME SA403 WP321 equal cross
  • ASTM A403 WP 321 SS straight crosses
  • SA 403 Grade 321 unequal cross (reducing)

AISI 321 material swage nipple

  • SA 403 Grade 321 eccentric swage nipple (reducing)
  • ASME SA403 WP321 concentric swage nipple

SS 321 stub end specification

ASTM A403 Gr WP 321 stub end standard A403 Gr WP321 stub end schedule Types Installed with
MSS SP-43
  • Schedule 5S
  • Schedule 10S
Type B Slip On flange
MSS SP-43
  • Schedule 10S
  • Schedule 5S
Type A Lap Joint flange
ASME B16.9
  • Schedule STD
  • Schedule XS
butt weld Lap Joint flange

Stainless steel 321 pipe fittings equivalent standard

ASTM Grade UNS JIS WNR. EN
A403 WP321 S32100 SUS 321 1.4541 X6CrNiTi18-10

Chemical composition of A403 WP321 material

% Cr Ti Ni C Si Mn P S N Fe
321 min:17.0 / max:19.0 min:5*(C+N) / max:0.70 min: 9.0 / max:12.0 max:0.08 max:0.75 max:2.0 max:0.045 max:0.03 max:0.10 Balance

Mechanical properties of A403 Gr WP321 welded fittings

Grade Elongation – % in 50 mm (min.) Hardness (Brinell) MAX Tensile Strength Yield Strength 0.2% Offset ksi(min.)
321 40 217 75 30

Talk to multiple genuine stockists of SUS 321 equal/ unequal/ lateral tee, UNS S32109 45/ 90/ 180 degree elbow in the schedule the 40s/ 80/ 120 in Middle East countries

These fittings are used in applications like petrochemical, mineral processing, furnace, aircraft, bellows, heat exchangers and flues.

Corrosion resistance properties for the elbow are at par with grade 304. Though, the ASTM A403 WP321 Elbow is resistant to potable water where chloride content is about 200 mg/L at room temperatures. But an increase in temperature leads to a reduction in its corrosion resistance properties.

To increase the corrosion resistance properties of the alloy, solution annealing is carried out between 950°C -1120°C, followed by rapid cooling. To stabilize the material, it is given a heat treatment of 870°C – 900°C for 1 hour per 25mm of thickness, and it is then cooled by air. Stabilizing is carried out on the SS 321 Tee for severe service applications. The fitting undergoes stress relieving at 700°C, for 1 to 2 hours, and is cooled by air.

AISI 321 return bends and WNR 1.4541 3D/ 5D elbow as per ASME B16.9 standard, stainless steel 321 buttweld fittings available in all types and wall thickness

The material has excellent weldability and can be welded using all conventional fusing techniques. Usually, austenitic stainless steel alloys need to undergo pre and post-welding operations to successfully evade corrosion and prevent cracking. The stabilizing element in the alloy is titanium, which proves to be beneficial while welding. However, Stainless Steel 321 Pipe Fittings are more likely to lose titanium during welding, making it a prerequisite to preserving the element. A common practice to achieve a high-quality weld in the system is to ensure the use of good inert gas. One must also pay special attention during welding to prevent the pick up of nitrogen from the atmosphere and carbon from oils. Since the UNS S32109 reducer has an austenite microstructure, the fitting is highly susceptible to cracking while welding. But because the alloy gets resolidifies with a small amount of ferrite, its risk of cracking becomes smaller.

Check DIN 1.4541 stainless steel pipe bend chemical composition, mechanical properties, and alloy 321 cross equivalent

There are two advantages of using grade 321 Stainless Steel Pipe Fittings –

  • They have good resistance to intergranular corrosion
  • The fittings can be used in elevated temperatures ranging between 800°F to 1850°F.