Stainless steel 321/321H Buttweld Fittings
What is Stainless steel 321/321H Buttweld Fittings
Sumit Impex is a remarkable producer, sellers, supplier and exporter of an extent of Stainless Steel 321/321H Pipe Fittings. Compound 321 is a Titanium settled Austenitic steel which bears a better than average wide utilization obstacle. It executes dumbfounding insurance from intergranular utilization after prologue to chromium carbide precipitation keep running at temperatures of 800–1500°F. Beside this the mix moreover contradicts oxidation at 1500°F. It shows a high extent of snap and stress break properties than 304/304L Alloys. Blend 321 contains high carbon content and was made to give improved killjoy check. It furthermore exhibits higher quality at temperatures above 1000°F. Warmth treatment can’t harden Alloy 321. Our SS UNS S32100 Pipe Elbow find application in Chemical Processing, Expansion Joints and anything is possible from that point.

321 SS 5D Elbow, DIN 1.4541 Exhaust Pipe Reducer, DIN 1.4541 Reducing Tee, SS 321H Buttweld Welded Cap Exporter, UNS S32100 Lateral Tee, DIN 1.4541 SR Return Bend Stockist, SS 321H Contcentric Reducer Supplier, 321 SS Elbow, ASME SA403 SS 321 Buttweld Reducer.
Flight related exchange also uses these SS WNR 1.4541/WNR 1.4878 Butt Weld Reducer as chamber manifolds use. We offer aftereffects of the most critical quality to our customers. All of our things are absolutely flexible to meet customer unequivocal necessities. We utilize bleeding edge equipment in the age strategy to ensure all of our things agree to all inclusive measures of significant worth.
At Sumit Impex the amassing of these mechanical things are done with the unadulterated idea of unrefined material and as per the overall benchmarks. These Pipe Fittings are commonly popular for their sturdiness, quality and accurate estimations. These Pipe Fittings have a high restriction towards the utilization and as such used in a wide extent of mechanical applications.
These are used in various basic organizations that fuse the vehicle undertakings, invention adventures, and various other power plants. There are various tests and appraisal driven before the last division of product, the creators are inviting pariah survey and are conduction tests like cementing test, flaring tests mixture assessments, intergranular disintegration resistance tests and various other specific examinations to check the predominance of the manufactured items.
Specification:- Stainless steel 321/321H Buttweld Fittings
Specification | ASTM A403 / ASME SA403 |
Standard | EN, ISO, DIN, JIS, NPT |
Dimension Standard | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
Type | Seamless / Welded / Fabricated |
Pressure-Temperature Class | 150LB, 300LB, 600LB, 1500LB, 2500LB. |
Schedule | Schedule 5 TO Schedule XXS. |
Type Of Dimension | BS1640, EN 10253 - 4, DIN 2605, JIS B2312, ANSI B16.9, MSS SP-75, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2313 |
Equivalent Grade:- Stainless steel 321/321H Buttweld Fittings
STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Chemical Composition:- Stainless steel 321/321H Buttweld Fittings
Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 5(C+N) – 0.70 max |
SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
Mechanical Properties:- Stainless steel 321/321H Buttweld Fittings
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Dimensions:- Stainless steel 321/321H Buttweld Fittings

Nominal Pipe Size | Outside Diameter | Caps | Straight Tees | Straight Crosses | Stub Ends | |||
inch | mm | inch | Length (inch) | Center to End (inch) | Center to End (inch) | Lap Diameter (inch) | Long Length (inch) | Short Length (inch) |
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 |
Pressure Rating:- Stainless steel 321/321H Buttweld Fittings
(oF) | (oC) | 150 |
-20 to 150 | -29 to 66 | 300 |
200 | 93 | 265 |
250 | 121 | 225 |
300 | 149 | 185 |
350 | 177 | 150 |
400 | 204 | - |
450 | 232 | - |
500 | 260 | - |
550 | 288 | - |
Weight Chart:- Stainless steel 321/321H Buttweld Fittings
DN | Schedule 10S | Schedule 40S | Schedule 80S | ||||||
900 Elbow | 450 Elbow | Equal tee | 900 Elbow | 450 Elbow | Equal tee | 900 Elbow | 450 Elbow | Equal tee | |
8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.4 | 1.28 | 0.91 | 0.59 | 1.59 |
65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
90 | 1.70 | 0.75 | 2.67 | 2.83 | 1.42 | 4.08 | 4.00 | 2.00 | 5.44 |
100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
DN | Schedule 10S | Schedule 40S | Schedule 80S | ||||||
Con reducer | Ecc reducer | Reducing tee | Con reducer | Ecc reducer | Reducing tee | Con reducer | Ecc reducer | Reducing tee | |
40x.25 | 0.19 | 0.19 | 0.60 | 0.26 | 0.26 | 0.76 | 0.34 | 0.34 | 0.90 |
50x25 | 0.28 | 0.28 | 0.73 | 0.40 | 0.40 | 1.10 | 0.54 | 0.54 | 1.37 |
50x40 | 0.31 | 0.31 | 0.76 | 0.45 | 0.45 | 1.15 | 0.59 | 0.59 | 1.43 |
80x.50 | 0.55 | 0.55 | 1.56 | 1.00 | 1.00 | 2.91 | 1.79 | 1.79 | 3.91 |
100x50 | 0.78 | 0.78 | 2.94 | 1.50 | 1.50 | 4.48 | 1.95 | 1.95 | 6.55 |
100x80 | 0.87 | 0.87 | 3.04 | 1.74 | 1.74 | 4.64 | 2.33 | 2.33 | 6.79 |
150x80 | 1.82 | 1.82 | 6.86 | 3.95 | 3.95 | 9.68 | 5.51 | 5.51 | 11.57 |
150x100 | 1.96 | 1.96 | 7.10 | 4.07 | 4.07 | 11.94 | 5.96 | 5.96 | 11.97 |
200x100 | 3.01 | 3.01 | 13.46 | 6.55 | 6.55 | 17.98 | 9.23 | 9.23 | 24.18 |
200x150 | 3.19 | 3.19 | 14.08 | 6.74 | 6.74 | 18.82 | 10.12 | 10.12 | 25.31 |
Different Types:- Stainless steel 321/321H Buttweld Fittings
SS 321 90 Elbow | Stainless Steel 321 45 Elbow |
SS 321 Long Radius Elbow | Stainless Steel 321 Short Radius Elbow |
UNS S32100 Eccentric Reducer | SS 321 Equal Tee |
Stainless Steel 321H Welded Fitting | SS 321H 90 Elbow |
SS 321H Long Radius Elbow | Stainless Steel 321H Short Radius Elbow |
UNS S32103 Eccentric Reducer | SS 321H Equal Tee |
Price List:- Stainless steel 321/321H Buttweld Fittings
- Stainless Steel 321 Reducer
USD $2.1 – $10.01 / Kg - Stainless Steel 321H Elbow
USD $2.05 – $10.15 / Kg - SS 321 Bend
USD $2.45 – $10.45 / Kg - Stainless Steel 321H Stud End
USD $2.18 – $10.78 / Kg - UNS S32100 Cross
USD $2.14 – $10.39 / Kg - Astm A403 SS 321H Long Radius Elbow
USD $2.11 – $8 / Kg - DIN 1.4878 Nipple
USD $2.13 – $10.89 / Kg

Application Industries
- Construction
- Bridges
- Petrochemical Industry
- Ship Building
- Engineering
- General Structural Purposes
- Offshore and Onshore Services

Packaging Industries
We Sumit Impex Metal Ensure the Best Quality of Packing, Because It Plays an Important Role Especially in the Case of International Shipments in Which Consignment Passes Through Various Channels to Reach the Ultimate Destination, So We Put Extraordinary Concern Regarding Packaging.
We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,
- Boxes and Crates
- Shrink-wrapped
- Carton boxes
- Wooden pallets
- Wooden boxes
- Wooden crates

Testings (Destructive, Non Destructive)
- Mechanical Testing Such as Tensile, Elongation, Reduction of Area
- Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
- Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
- Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
- Positive Material Identification – PMI Testing
- Chemical Analysis – Spectro Analysis
- Intergranular Corrosion (IGC) Test
- Pitting Resistance Test
- Dye Penetrant Test (DP Test)
- Bend Test
- Micro Test
- Macro Test
- Hardness Test
- Flaring Test
- Flattening Test
- Hydrostatic Test
- Radiography Test
- Ultra Sonic Test (UT)
- Eddy Current Testing
- Impact Test
