Amardeep Steel Center is a certified manufacturer and global exporter of Stainless Steel 316 Pipe Fittings and Stainless Steel 316L Pipe Fittings, supplying industries across the USA, UAE, Europe, and Southeast Asia. Our 316 SS pipe fittings conform to ASTM A403 WP316 and ASTM A403 WP316L standards, covering buttweld, seamless, and fabricated forms in sizes from 1/2 inch to 48 inch and schedules SCH 10S to SCH 160. The 2-3% molybdenum content in 316 SS fittings provides superior resistance to chlorides and industrial acids making them the preferred choice for marine, chemical, and pharmaceutical applications. Whether you need 316 SS fittings for high-pressure service or 316L pipe fittings for welded assemblies, Amardeep Steel delivers certified quality with fast global dispatch.
What Are Stainless Steel 316/316L Pipe Fittings?
316/316L Pipe Fittings are components used to connect, control, and change the direction of piping systems. What makes them special is the addition of molybdenum to their chemical composition. This key element gives them significantly enhanced corrosion resistance compared to the more common 304 grade, particularly against chlorides and other industrial chemicals. This makes them the go-to choice for marine applications, chemical processing, and other harsh environments. The two primary grades in this family are:
- Stainless Steel 316 Pipe Fittings (SS 316 Pipe Fittings): This is the standard molybdenum-bearing grade. It offers excellent strength and outstanding corrosion resistance in a wide range of aggressive environments.
- Stainless Steel 316L Pipe Fittings (SS 316L Pipe Fittings): The 'L' stands for low carbon. This variant is designed for welded applications. The reduced carbon content in 316L stainless steel fittings minimizes harmful carbide precipitation during welding, which prevents corrosion at the weld seam. This makes it the preferred material for heavy-gauge welded components that cannot be heat-treated after fabrication.
These products are governed by standards like ASTM A403, with designations such as ASTM A403 WP316 fittings and ASTM A403 WP316L fittings. This ensures they meet the strict chemical and mechanical requirements for pressure piping systems.
Table of Contents
- Stainless Steel 316/316L Pipe Fittings Specifications
- Manufacturing Standards for Stainless Steel 316 Pipe Fittings
- Types of Stainless Steel 316 & 316L Pipe Fittings
- Chemical Composition of Stainless Steel 316 & 316L Pipe Fittings
- Mechanical Properties of 316 SS Pipe Fittings and 316L Stainless Steel Pipe Fittings
- Temperature Range of Stainless Steel 316 & 316L Pipe Fittings
- Physical Properties of Stainless Steel 316 & 316L Pipe Fittings
- Corrosion Resistance of Stainless Steel 316 Pipe Fittings and 316L Pipe Fittings
- Corrosion Resistance Properties (316 Plumbing)
- Equivalent Material Standards for Stainless Steel 316 / 316L Pipe Fittings
- Dimensions & Size Charts of 316 SS Pipe Fittings
- Pressure Ratings of Stainless Steel 316 Pipe Fittings
- Schedule Chart & Weight of 316L Pipe Fittings
- SS 316 Short Radius Pipe Elbows - Weight Chart
- SS 316L Available Schedules by NPS
- Heat Treatment of Stainless Steel 316/316L Pipe Fittings
- Dimensional Tolerances of Stainless Steel 316/316L Pipe Fittings
- Applications of Stainless Steel 316 & 316L Pipe Fittings
- Why Choose Amardeep Steel for Stainless Steel 316 Pipe Fittings
- Get a Competitive Price on Stainless Steel 316 / 316L Pipe Fittings
- Related Products
- Frequently Asked Questions – Stainless Steel 316 Pipe Fittings & 316L Pipe Fittings
Stainless Steel 316/316L Pipe Fittings Specifications
|
Specification |
Details |
|---|---|
|
Standard |
ASTM A403 / ASME SA403 |
|
Grades |
WP316, WP316L, WP316H |
|
UNS / WNR (316) |
S31600 / 1.4401 / 1.4436 |
|
UNS / WNR (316L) |
S31603 / 1.4404 / 1.4435 |
|
Types |
Seamless / Welded / Fabricated |
|
Buttweld Fittings Size |
½" to 48" NB |
Buttweld Fittings Size |
½" to 48" NB |
Forged Fittings Size |
¼" to 4" – 2000 to 9000 LBS |
Wall Thickness / Schedule |
SCH 5S, 10S, 40S, 80S, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS |
Bending Radius |
1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
Dimension Standards |
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, MSS SP-75 |
Surface Finish |
Polished / Pickled & Passivated (PA) / Mill Finish (2B / BA) |
Testing |
Ultrasonic, HIC, PMI, 100% Radiography |
Certification |
ISO 9001:2015 | MTC EN 10204 3.1 / 3.2 |
HS Code (316) |
7307.23 (Butt Welding Fittings, Stainless Steel) |
HS Code (316L) |
72192112 |
Packaging |
Bubble wrap / Wooden boxes / As per customer requirement |
Documentation |
MTC, Radiography Report, Third Party Inspection, QAP, Raw Material Test Reports |
Manufacturing Standards for Stainless Steel 316 Pipe Fittings
Amardeep Steel manufactures stainless steel 316 and 316L pipe fittings in line with globally accepted dimensional and material standards so they integrate smoothly into refinery, marine, and chemical process piping systems.
Product Type |
Applicable Standard |
|---|---|
ASTM A403 / ASME SA403 |
Wrought austenitic stainless steel buttweld fittings |
ASME/ANSI B16.9 |
Factory-made wrought buttwelding fittings |
ASME B16.28 |
Short radius elbows and returns |
MSS-SP-43 |
Light-wall stainless steel buttwelding fittings |
MSS SP-75 |
High-test wrought buttwelding fittings |
ASTM A182 / ASME SA182 |
Forged or rolled alloy steel fittings |
GOST 17375 / 17376 / 17378 / 17379 |
Russian standard (available on request) |
Types of Stainless Steel 316 & 316L Pipe Fittings
- SS 316/316L 45° Long Radius Elbow
- SS 316/316L 90° Long Radius Elbow
- SS 316/316L 180° Return Bend (Short & Long Radius)
- SS 316/316L Short Radius Elbow
- SS 316/316L Reducing Elbow (UNS S31600)
- SS 316/316L Equal Tee
- SS 316/316L Unequal / Reducing Tee
- SS 316/316L Concentric Reducer
- SS 316/316L Eccentric Reducer
- SS 316/316L Pipe Cap (ASTM A403 WP316)
- SS 316/316L Stub End / Lap Joint (AISI 316)
- SS 316/316L Cross (SUS 316 / SUS 316L) — For intersecting pipeline connections requiring a four-branch junction.
- SS 316/316L Coupling (WNR 1.4401 / 1.4404)
- SS 316/316L Nipple (INOX 316 / INOX 316L)
- SS 316/316L Collar Pipe Fittings — For smaller bore connections using a socket weld joint.
- SS 316/316L Swage Nipple
Chemical Composition of Stainless Steel 316 & 316L Pipe Fittings
The molybdenum content is the key to the enhanced corrosion resistance of the 316 grade family.
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
N |
|---|---|---|---|---|---|---|---|---|---|
|
SS 316 (WP316) |
0.08 max |
2.00 max |
0.75 max |
0.045 max |
0.030 max |
16.0-18.0 |
10.0-14.0 |
2.00-3.00 |
0.10% max |
|
SS 316L (WP316L) |
0.03 max |
2.00 max |
0.75 max |
0.045 max |
0.030 max |
16.0-18.0 |
10.0-14.0 |
2.00-3.00 |
0.10% max |
Mechanical Properties of 316 SS Pipe Fittings and 316L Stainless Steel Pipe Fittings
|
Property |
SS 316 – WP316 |
SS 316L – WP316L |
|---|---|---|
|
Tensile Strength (min) |
515 MPa (75 ksi) |
485 MPa (70 ksi) |
|
Yield Strength (min) |
205 MPa (30 ksi) |
170 MPa (25 ksi) |
|
Elongation in 2" (min) |
35% |
35% |
|
Hardness (max) |
95 HRB |
95 HRB |
Temperature Range of Stainless Steel 316 & 316L Pipe Fittings
Grade |
Temperature Range (°C) |
Temperature Range (°F) |
Max Service Temp (°C) |
|---|---|---|---|
SS 316 (WP316) |
1371 – 1399°C (melting) |
2500 – 2550°F |
870°C (continuous) |
SS 316L (WP316L) |
1038 – 1149°C (annealing) |
1900 – 2100°F |
870°C (continuous) |
Physical Properties of Stainless Steel 316 & 316L Pipe Fittings
| Property | SS 316 (WP316) | SS 316L (WP316L) |
|---|---|---|
| Density | 8.0 g/cm³ | 8.0 g/cm³ |
| Melting Point | 1400°C (2552°F) | 1371 – 1399°C |
| Thermal Conductivity at 100°C | 16.2 W/m·K | 16.2 W/m·K |
| Thermal Conductivity at 500°C | 21.5 W/m·K | 21.5 W/m·K |
| Elastic Modulus | 193 GPa | 193 GPa |
| Electrical Resistivity | 740 nΩ·m | 740 nΩ·m |
| Specific Heat Capacity | 500 J/kg·K | 500 J/kg·K |
| Alloying Elements | 17% Cr, 11% Ni, 2% Mo | 17% Cr, 11% Ni, 2% Mo |
Corrosion Resistance of Stainless Steel 316 Pipe Fittings and 316L Pipe Fittings
|
Environment |
Max Temp (°F / °C) |
Corrosion Resistance |
|---|---|---|
|
Phosphoric Acid |
203°F / 95°C |
Good |
|
Sulfuric Acid (dilute) |
<54°C |
Moderate |
|
Sulfuric Acid (conc.) |
122°F / 50°C |
Moderate |
|
Nitric Acid |
212°F / 100°C |
Good |
|
Sodium Hydroxide |
194°F / 90°C |
Good |
|
Hydrochloric Acid |
>Boiling |
Not recommended |
|
Seawater |
15°C – 80°C |
Excellent |
|
Acidic Environments |
0°C – 89°C |
Moderate |
Corrosion Resistance Properties (316 Plumbing)
| Property | Value |
|---|---|
| Mo (wt%) | 2.1 |
| Cr (wt%) | 16.5 |
| N (wt%) | 0.05 |
| PRE (Pitting Resistance Equivalent) | 24.2 |
| CPT (Critical Pitting Temp) | 15°C / -59°F |
| CCT (Critical Crevice Corrosion Temp) | -2.5°C / -27.5°F |
Equivalent Material Standards for Stainless Steel 316 / 316L Pipe Fittings
| Standard | SS 316 Grade | SS 316L Grade |
|---|---|---|
| UNS | S31600 | S31603 |
| WERKSTOFF NR. | 1.4401 / 1.4436 | 1.4404 / 1.4435 |
| JIS | SUS 316 | SUS 316L |
| EN | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
| BS | 316S31 / 316S33 | 316S11 / 316S13 |
| AFNOR | Z7CND17-11-02 | Z3CND17-11-02 / Z3CND18-14-03 |
| GOST | — | 03Ch17N14M3 / 03Ch17N14M2 |
| AISI / Trade Name | AISI 316 / INOX 316 / SUS 316 | AISI 316L / INOX 316L / SUS 316L |
Dimensions & Size Charts of 316 SS Pipe Fittings
SS 316 Fittings Size Chart (Cap Heights)
| NPS (inch) | O.D (mm) | Length / Height (mm) |
|---|---|---|
| 1/2 | 21.3 | 25 |
| 3/4 | 26.7 | 25 |
| 1 | 33.4 | 38 |
| 1 1/4 | 42.2 | 38 |
| 1 1/2 | 48.3 | 38 |
| 2 | 60.3 | 38 |
| 2 1/2 | 73.0 | 38 |
| 3 | 88.9 | 51 |
| 3 1/2 | 101.6 | 64 |
| 4 | 114.3 | 64 |
| 5 | 141.3 | 76 |
| 6 | 168.3 | 89 |
| 8 | 219.1 | 102 |
| 10 | 273.0 | 127 |
| 12 | 323.8 | 152 |
| 14 | 355.6 | 165 |
| 16 | 406.4 | 178 |
| 18 | 457.0 | 203 |
| 20 | 508.0 | 229 |
| 22 | 559.0 | 254 |
| 24 | 610.0 | 267 |
| 26 | 660.0 | 267 |
| 28 | 711.0 | 267 |
| 30 | 762.0 | 267 |
| 32 | 813.0 | 267 |
| 34 | 864.0 | 237 |
| 36 | 914.0 | 267 |
| 38 | 965.0 | 305 |
| 40 | 1016.0 | 305 |
SS 316 Fittings Size Chart (Cap Heights)
| NPS | O.D (mm) | Length / Height (mm) | Length / Height 1 (mm) |
|---|---|---|---|
| 1/2 | 21.3 | 25 | 25 |
| 3/4 | 26.7 | 25 | 25 |
| 1 | 33.4 | 38 | 38 |
| 1 1/4 | 42.2 | 38 | 38 |
| 1 1/2 | 48.3 | 38 | 38 |
| 2 | 60.3 | 38 | 44 |
| 2 1/2 | 73.0 | 38 | 51 |
| 3 | 88.9 | 51 | 64 |
| 3 1/2 | 101.6 | 64 | 76 |
| 4 | 114.3 | 64 | 76 |
| 5 | 141.3 | 76 | 89 |
| 6 | 168.3 | 89 | 102 |
| 8 | 219.1 | 102 | 127 |
| 10 | 273.0 | 127 | 152 |
| 12 | 323.8 | 152 | 178 |
| 14 | 355.6 | 165 | 191 |
| 16 | 406.4 | 178 | 203 |
| 18 | 457.0 | 203 | 229 |
| 20 | 508.0 | 229 | 254 |
| 22 | 559.0 | 254 | 254 |
| 24 | 610.0 | 267 | 305 |
| 26 | 660.0 | 267 | — |
| 28 | 711.0 | 267 | — |
| 30 | 762.0 | 267 | — |
Dimensions of UNS S31600 Reducing Elbow
|
NPS (inch) |
O.D (mm) |
Center-End A (mm) |
Center-End B (mm) |
|---|---|---|---|
|
½ |
21.3 |
38 |
16 |
|
¾ |
26.7 |
38 |
19 |
|
1 |
33.4 |
38 |
22 |
|
1¼ |
42.2 |
48 |
25 |
|
1½ |
48.3 |
57 |
29 |
|
2 |
60.3 |
76 |
35 |
|
2½ |
73.0 |
95 |
44 |
|
3 |
88.9 |
114 |
51 |
|
3½ |
101.6 |
133 |
57 |
|
4 |
114.3 |
152 |
64 |
|
5 |
141.3 |
190 |
79 |
|
6 |
168.3 |
229 |
95 |
|
8 |
219.1 |
305 |
127 |
|
10 |
273.0 |
381 |
159 |
|
12 |
323.8 |
457 |
190 |
|
14 |
355.6 |
533 |
222 |
|
16 |
406.4 |
610 |
254 |
|
18 |
457.0 |
686 |
286 |
|
20 |
508.0 |
762 |
318 |
|
22 |
559.0 |
838 |
343 |
|
24 |
610.0 |
914 |
381 |
|
26 |
660.0 |
991 |
406 |
|
28 |
711.0 |
1067 |
438 |
|
30 |
762.0 |
1143 |
470 |
|
32 |
813.0 |
1219 |
502 |
|
34 |
864.0 |
1295 |
533 |
|
36 |
914.0 |
1372 |
565 |
ASTM A403 WP316 Pipe Caps Dimensions
| NPS (inch) | O.D (mm) | Center-End A (mm) | Center-End B (mm) |
|---|---|---|---|
| 1/2 | 21.3 | 38 | 16 |
| 3/4 | 26.7 | 38 | 19 |
| 1 | 33.4 | 38 | 22 |
| 1 1/4 | 42.2 | 48 | 25 |
| 1 1/2 | 48.3 | 57 | 29 |
| 2 | 60.3 | 76 | 35 |
| 2 1/2 | 73.0 | 95 | 44 |
| 3 | 88.9 | 114 | 51 |
| 3 1/2 | 101.6 | 133 | 57 |
| 4 | 114.3 | 152 | 64 |
| 5 | 141.3 | 190 | 79 |
| 6 | 168.3 | 229 | 95 |
| 8 | 219.1 | 305 | 127 |
| 10 | 273.0 | 381 | 159 |
| 12 | 323.8 | 457 | 190 |
| 14 | 355.6 | 533 | 222 |
| 16 | 406.4 | 610 | 254 |
| 18 | 457.0 | 686 | 286 |
| 20 | 508.0 | 762 | 318 |
| 22 | 559.0 | 838 | 343 |
| 24 | 610.0 | 914 | 381 |
| 26 | 660.0 | 991 | 406 |
| 28 | 711.0 | 1067 | 438 |
| 30 | 762.0 | 1143 | 470 |
| 32 | 813.0 | 1219 | 502 |
| 34 | 864.0 | 1295 | 533 |
| 36 | 914.0 | 1372 | 565 |
Elbow Bending Radius
|
Bend Radius |
Bend Angle |
|---|---|
|
3D |
15° |
|
4D |
135° |
|
5D |
180° |
|
6D |
45° |
|
8D |
60° |
|
10D |
90° |
Pressure Ratings of Stainless Steel 316 Pipe Fittings
Working Pressure – ASTM A403 Grade WP316 Collar Pipe Fittings
|
NPS (inch) |
I.D |
O.D |
W.T Min. |
Working Pressure Max. (psi) |
Weight (kg) |
|---|---|---|---|---|---|
|
¼ |
.344 |
.540 |
.088 |
780 |
.086 |
|
⅜ |
.473 |
.675 |
.091 |
620 |
.115 |
|
½ |
.602 |
.840 |
.109 |
590 |
.170 |
|
¾ |
.804 |
1.050 |
.113 |
480 |
.226 |
|
1 |
1.029 |
1.315 |
.133 |
450 |
.333 |
|
1¼ |
1.360 |
1.660 |
.140 |
370 |
.450 |
|
1½ |
1.590 |
1.900 |
.145 |
330 |
.537 |
|
2 |
2.047 |
2.375 |
.154 |
280 |
.720 |
|
2½ |
2.445 |
2.875 |
.203 |
300 |
1.136 |
|
3 |
3.042 |
3.500 |
.216 |
260 |
1.488 |
|
3½ |
3.521 |
4.000 |
.226 |
240 |
1.789 |
|
4 |
3.998 |
4.500 |
.237 |
220 |
2.118 |
|
5 |
5.016 |
5.563 |
.258 |
190 |
2.874 |
|
6 |
6.031 |
6.625 |
.280 |
180 |
3.733 |
|
8 |
7.942 |
8.625 |
.322 |
160 |
5.619 |
|
10 |
9.976 |
10.750 |
.365 |
140 |
7.966 |
|
12 |
11.889 |
12.750 |
.406 |
130 |
10.534 |
|
14 |
13.073 |
14.000 |
.437 |
130 |
12.462 |
|
16 |
14.940 |
16.000 |
.500 |
130 |
16.286 |
Pressure Rating – 316 Stainless Steel Unequal Tee
|
Pressure Class |
Size Range |
-20 to 150°F |
200°F (93°C) |
250°F (121°C) |
300°F (149°C) |
350°F (177°C) |
400°F (204°C) |
500°F (260°C) |
550°F (288°C) |
|---|---|---|---|---|---|---|---|---|---|
|
Class 150# |
All |
300 |
265 |
225 |
185 |
150 |
— |
— |
— |
|
Class 300# |
¼" – 1" |
2000 |
1785 |
1575 |
1360 |
1150 |
935 |
510 |
300 |
|
Class 300# |
1¼" – 2" |
1500 |
1350 |
1200 |
1050 |
900 |
750 |
450 |
300 |
|
Class 300# |
2½" – 3" |
1000 |
910 |
825 |
735 |
650 |
560 |
385 |
300 |
Schedule Chart & Weight of 316L Pipe Fittings
Schedule Chart – Weight (kg) per NPS
|
NPS (mm) |
SCH 10S – Equal Tee (kg) |
SCH 40S – 90° Elbow (kg) |
SCH 80S – 45° Elbow (kg) |
|---|---|---|---|
|
8 |
0.03 |
0.03 |
0.03 |
|
10 |
0.05 |
0.03 |
0.04 |
|
15 |
0.09 |
0.08 |
0.05 |
|
20 |
0.13 |
0.08 |
0.05 |
|
25 |
0.28 |
0.15 |
0.14 |
|
32 |
0.49 |
0.26 |
0.23 |
|
40 |
0.68 |
0.40 |
0.29 |
|
50 |
0.85 |
0.70 |
0.59 |
|
65 |
1.41 |
1.40 |
0.99 |
|
80 |
1.77 |
2.20 |
1.50 |
|
90 |
2.67 |
2.83 |
2.00 |
|
100 |
3.46 |
4.47 |
2.81 |
|
150 |
8.07 |
10.89 |
8.16 |
|
200 |
15.65 |
21.54 |
16.56 |
|
250 |
26.46 |
38.56 |
25.86 |
|
300 |
39.46 |
59.42 |
39.69 |
SS 316 Short Radius Pipe Elbows – Weight Chart
|
NPS (inch) |
Weight (kg) |
Weight (lbs) |
|---|---|---|
|
½ |
0.04 |
0.09 |
|
¾ |
0.04 |
0.09 |
|
1 |
0.11 |
0.25 |
|
1¼ |
0.17 |
0.38 |
|
1½ |
0.18 |
0.40 |
|
2 |
0.37 |
0.81 |
|
2½ |
0.79 |
1.75 |
|
3 |
1.19 |
2.63 |
|
3½ |
1.59 |
3.50 |
|
4 |
2.04 |
4.50 |
|
5 |
3.40 |
7.50 |
|
6 |
5.44 |
12.00 |
|
8 |
10.43 |
23.00 |
|
10 |
19.50 |
43.00 |
|
12 |
28.12 |
62.00 |
|
14 |
36.29 |
80.00 |
|
16 |
45.36 |
100.00 |
|
18 |
57.15 |
126.00 |
|
20 |
72.57 |
160.00 |
|
22 |
89.36 |
197.00 |
|
24 |
107.95 |
238.00 |
|
26 |
124.74 |
275.00 |
|
30 |
166.47 |
367.00 |
|
36 |
240.86 |
531.00 |
SS 316L Available Schedules by NPS
|
Schedule |
NPS Range |
|---|---|
|
SCH 10 |
20" – 24" NPS |
|
SCH 20 |
26" – 30" NPS |
|
SCH 40 |
½" – 2½" NPS |
|
SCH 60 |
3" – 3½" NPS |
|
SCH 80 |
4" NPS |
|
SCH 160 |
5" – 8" NPS |
|
STD |
10" – 18" NPS |
|
XXH |
32" – 48" NPS |
Heat Treatment of Stainless Steel 316/316L Pipe Fittings
All Stainless Steel 316/316L Pipe Fittings are supplied in a solution-annealed condition. This process involves heating the fittings to a temperature between 1040°C and 1120°C (1900°F and 2050°F) and then rapidly cooling (quenching) them. This critical treatment relieves manufacturing stresses, dissolves any harmful carbides, and restores the material's maximum corrosion resistance and toughness.
Welding of 316/316L Stainless Steel Pipe Fittings
Recommended welding processes include TIG (GTAW), MIG (GMAW), SMAW, and FCAW. Use ER316L filler wire to maintain low-carbon content at the weld zone and prevent sensitisation. For heavy-gauge components that cannot be post-weld annealed, specify 316L grade fittings.
Dimensional Tolerances of 316/316L Pipe Fittings
All fittings are manufactured to the precise dimensional standards of ASME B16.9 (buttweld fittings) and ASME B16.11 (forged fittings), ensuring every dimension — from center-to-face measurement to bevel angle — guarantees easy installation and reliable, leak-free performance.
SS 316L Butt Weld Fittings — Dimensional Tolerances on Length (ASME B16.9 / B16.28)
|
NPS Range |
Overall Length Tolerance (OVL2) inch [mm] |
Center-to-End Tolerance (OVL1) inch [mm] |
|---|---|---|
|
½ to 2½ |
±0.12 [±3] |
±0.06 [±2] |
|
3 to 3½ |
±0.12 [±3] |
±0.06 [±2] |
|
4 |
±0.12 [±3] |
±0.06 [±2] |
|
5 to 8 |
±0.25 [±6] |
±0.06 [±2] |
|
10 to 18 |
±0.25 [±6] |
±0.09 [±2] |
|
20 to 24 |
±0.25 [±6] |
±0.09 [±2] |
|
26 to 30 |
±0.38 [±10] |
±0.19 [±5] |
|
32 to 48 |
±0.38 [±10] |
±0.19 [±5] |
Applications of Stainless Steel 316 & 316L Pipe Fittings
The 2–3% molybdenum in 316/316L SS pipe fittings provides superior pitting and crevice corrosion resistance, making them the preferred choice across these industries:
- Chemical Processing: Chloride-rich acids, sulfuric acid, phosphoric acid environments, specialty chemicals
- Marine & Offshore: Seawater equipment, desalination, offshore platforms, saltwater piping
- Pharmaceutical: Sterile processing, drug manufacturing, clean-room piping systems
- Food & Beverage: Hygienic processing lines, breweries, dairy, food-grade piping
- Pulp & Paper: Bleaching plant piping, chemical recovery systems, paper mill equipment
- Power Generation: Condensers, heat exchangers, coolant lines, steam systems
- Oil & Gas: Petrochemical plants, cargo tanks, gas processing equipment, NACE MR0175 service
- Water Treatment: Brine systems, desalination, treated water distribution
- Biofuels & Environment: Biofuel plants, dyeing equipment, environmental processing
Why Choose Amardeep Steel for Stainless Steel 316 Pipe Fittings
Amardeep Steel combines manufacturing control, export experience, and technical support to deliver stainless steel 316 fittings that meet project timelines and quality expectations.
- In-House Manufacturing: Full control over production ensures consistent wall thickness, superior finish, and compliance with ASTM, ASME, and MSS standards on every batch.
- In-House Testing: Every batch undergoes Positive Material Identification (PMI), ultrasonic testing (UT), and hydrostatic pressure testing before dispatch. Full raw material traceability is maintained.
- ISO 9001:2015 Certified: Quality management system certified, with MTC EN 10204 3.1 supplied as standard. 3.2 certificates and TUV / DNV / Lloyd's third-party inspection available on request.
- Large Ready Stock: Extensive inventory of standard 316/316L pipe fittings across all common sizes and schedules. Most orders ship within 24–48 hours from our Mumbai warehouse.
- Global Export Experience: Trusted exporter to USA, Canada, UAE, Saudi Arabia, Europe, and Southeast Asia. Dedicated logistics team ensures timely and damage-free delivery worldwide.
- 24/7 Technical Support: Expert metallurgists and engineers available to assist with material selection, design queries, and application-specific challenges. Call us at +91 22 6611 3300 or email info@amardeepsteel.com.
Get a Competitive Price on Stainless Steel 316 / 316L Pipe Fittings
Ready-stock available. Custom sizes, schedules, and third-party inspection on request. ISO certified. Ships globally.
Related Products
- SS 316 Buttweld Fittings
- SS 316L Buttweld Fittings
- SS 316 Forged Fittings
- SS 316L Forged Fittings
- SS 316H Buttweld Fittings
- SS 316H Forged Fittings
- SS 304/304L Pipe Fittings
- SS 310/310S Pipe Fittings
- SS 317L Pipe Fittings
- SS 321/321H Pipe Fittings
- SS 347/347H Pipe Fittings
- SS 904L Pipe Fittings
Frequently Asked Questions – Stainless Steel 316 Pipe Fittings & 316L Pipe Fittings
1. What is the difference between SS 316 and SS 316L pipe fittings?
The key difference is carbon content. SS 316 fittings allow up to 0.08% carbon, while SS 316L is limited to 0.03% max. The lower carbon in 316L prevents sensitization (carbide precipitation) at weld heat-affected zones, making 316L the preferred choice for welded assemblies that cannot be post-weld annealed. For non-welded applications, both grades perform identically in corrosion resistance.
2. What standard governs stainless steel 316 pipe fittings?
SS 316 and 316L buttweld pipe fittings are manufactured to ASTM A403 (WP316 / WP316L) and the equivalent ASME SA403. Dimensional standards include ASME/ANSI B16.9 (buttweld), ASME B16.28 (short radius), and MSS-SP-43 (light-wall). Forged fittings follow ASTM A182 / ASME SA182.
3. What sizes are available in 316 SS pipe fittings?
Amardeep Steel supplies 316 SS pipe fittings in seamless form from ½" to 10" NB and in welded / fabricated form from ½" to 48" NB. Schedules range from SCH 5S through SCH 160 and XXS. Forged fittings are available in ¼" to 4" with pressure classes of 2000, 3000, 6000, and 9000 LBS.
4. Are 316L stainless steel pipe fittings suitable for marine applications?
Yes. 316L pipe fittings are one of the most reliable stainless choices for marine environments. The 2–3% molybdenum content significantly improves resistance to chloride pitting — the primary corrosion mechanism in seawater. They are widely used in offshore platforms, desalination plants, ship fittings, and coastal infrastructure.
5. What certifications come with Amardeep Steel 316/316L fittings?
Every shipment comes with a Mill Test Certificate (MTC) as per EN 10204 3.1. EN 10204 3.2 is available on request. Amardeep Steel is ISO 9001:2015 certified. Third-party inspection by TUV, DNV, SGS, and Lloyd's can be arranged on request along with full documentation: QAP, heat treatment charts, raw material test reports, packing list, and guarantee letter.
6. How do I care for and maintain stainless steel 316 pipe fittings?
316/316L fittings require minimal maintenance. Periodically rinse with clean water to remove surface deposits, especially in marine or chloride-heavy environments. Avoid contact with carbon steel tools or surfaces that can cause iron contamination. For stubborn staining, clean with a dilute nitric acid solution or proprietary stainless steel cleaner. Never use chloride-based cleaners on 316/316L fittings.
7. What are the equivalent material grades for Stainless Steel 316 pipe fittings?
Stainless Steel 316 fittings are known by several designations across international standards: UNS S31600 (American), WNR 1.4401 (European), JIS SUS 316 (Japanese), and BS 316S31 (British). Our fittings are supplied with MTC documentation that cross-references the applicable standard for your jurisdiction.
