• An ISO 9001:2015 Certified Company
  • Call

    +91 9930108105

  • Address

    Sanghvi Galaxy, Shop No.2, Khetwadi
    10th Lane, Mumbai-400004, India

Stainless Steel 321 Buttweld fittings

Stainless steel 321 buttweld fittings specifications

What are the safety and reliability considerations for using Stainless Steel 321 Buttweld Fittings in demanding applications?

An austenitic stainless steel with good corrosion resistance, this material uses titanium to stabilize the conventional nickel-chromium microstructure. Stainless steel 321 buttweld fittings deliver reliable performance in food processing, exhaust stacks in aircraft, etc.

When selecting stainless steel 321 pipe fittings, buyers must consider:

  • Environmental conditions: These products withstand stress fractures and temperatures up to 1500°F or 816°C.
  • Corrosion resistance: An ASTM A403 WP321 tee endures attacks from many acids and alkalis. It also resists intergranular corrosion and polythionic acid stress cracking.
  • Heat treatment: This grade doesn't support heat-treatment hardening but responds to annealing, followed by quenching.

Sainless steel 321 tee supplier in India

Value added services of SS 321 buttweld fittings


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


Specification of stainless steel 321 buttweld fittings


Specifications Size Wall thickness of SS 321 fittings
ASTM A182 / A403 & ASME SA182 / SA403 1/2"NB to 48"NB SCH10S-SCHXXS
Finishes Bending radius Types
2B,BA ,HL ,8K R=1D, 2D, 3D, 5D, 6D, 8D, 10D, custom available Elbow, tee, reducer, cap, stub end
Surface treatment of SS 321 elbow Connection American standard
Rolling sand Welding ASTM, EN, JIS, GB, BS, AISI, DIN

Find here pressure rating for ASTM A403 WP321 elbow based on the specific requirements of your application

Which quality control measures are in place for the production of Stainless Steel 321 Buttweld fittings?

An ASTM A403 WP321 stub end produced from premium raw materials has a clear edge in long-term performance. We underscore the need for integrated quality control at each production stage.

Quality-management (micro and macro) for WNR 1.4541 wp321 pipe fittings entails chemical analysis, radiography, IGC and pitting testing (corrosion), and ultrasonic examination. Impact tests cover tensile strength, hardness, compression, and leakage risks.

Customers can verify the consistency of SS 321 bends from the relevant documentation: MTC, heat treatment charts, raw material certificate, specification guide, etc.

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

We produce stainless steel 321 reducer with exceptional sizes, standard, and quality, call us for more information on ready stock

What are the latest technologies used for manufacturing Stainless Steel 321 Buttweld Fittings?

A stainless steel 321 reducer gets coveted by industries for its sturdiness and toughness (Brinell hardness of 175). These fittings are easily weldable using standard techniques, although automation technologies, robots, and hybrid approaches have emerged.

An A403 Gr WP321 end cap gets manufactured from seamless or welded pipes. In hot-forming, a die decides the final result, and high-pressure welding shapes tees, reducers, etc. Cold-forming operates below the recrystallisation temperature. It offers more precision and a smoother surface finish for a UNS S32100 SS 321 elbow.

Incorporating CNC (computer numerical control), artificial intelligence, and the Internet of Things (IoT) into large-scale production boosts efficiency and quality.

Chemical composition of SS 321 elbow


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
Discover the precise details of stainless steel 321 cap at the lowest price

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
To check the different types ASTM A403 WP321 pipe fittings, contact us we can offer a wide range of options

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

Testing methods of SS 321 pipe fittings


  • → Hydrotest
  • → Non destructive testing
  • → Destructive testing
  • → Proof test
  • → Metallurgical test

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

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