Grade 316 Stainless Steel
Pipe Fittings

Stainless Steel 316 Pipe Fittings: Product Overview

iSteel is a reliable supplier of SS 316 pipe fittings to industrial piping systems. These fittings are used to join, end, or regulate fluid flow in pipes. The content of molybdenum in the material is 2-3%. This composition provides the metal with good resistance to pitting and crevice corrosion in chloride environments. They are tolerant of tough environments. Stainless steel 316 fittings are used in a stainless steel pipe network for industries in order to effectively process acidic chemicals. They are used in marine, chemical, and industrial processing applications.

Stainless steel WP316 ASTM A403 Elbows

SS 316 Elbow Fittings

Stainless steel WP316 ASTM A403 Tees

Stainless steel 316 Tee

Stainless steel WP316 ASTM A403 Reducers

A403 SS WP316 Reducer

Features and Benefits of SS 316 Pipe Fittings

The key advantage of 316 stainless steel fittings is their ability to resist localised corrosion. 304 stainless steel is not suitable for use in seawater. Grade 316 is the only grade that withstands these conditions. It has high strength at high temperatures. High-temperature piping applications (up to 870°C) are not susceptible to scaling. These physical properties help maintain piping networks intact during high-pressure operations. The austenitic structure gives toughness down to cryogenic temperatures and avoids brittle failures of metal in extreme cold.

Seamless SS 316 pipe fittings are manufactured from solid billets of steel, heated and extruded into fittings. Seamless variants are used for extremely high-pressure requirements in critical oil and gas lines. Welded fittings are made from rolled steel plates. These fittings are used in medium-pressure fittings, like water treatment plants, and all other key industrial pipe parts. These fittings are also tested for quality, according to the same rigorous processes. The thickness and outside diameter of the wall are checked per ASME B16.9. Leak testing is conducted using hydrostatic testing, and Positive Material Identification (PMI) is used to verify molybdenum content. Intergranular corrosion testing is also available to comply with ASTM A403.

Industries Using SS 316 Pipe Fittings

The fittings are subjected to intense loads in many areas. They carry corrosive acids in chemical processing facilities and petrochemical plants. These fittings are used to resist sour gas on oil and gas platforms. They are essential for marine and offshore rigs to withstand exposure to seawater. They are used in the food and pharmaceutical industries in a sanitary processing role. These are installed in power generation plants and water treatment or desalination plants to control the continuous liquid flow. The reason why the buyers choose SS 316 fittings is that they can be used in harsh environments and are easy to maintain. They are mechanically reliable and so do not cause expensive shutdowns. Each fitting is marked with the grade, heat number, and size of the fitting. They are packed by iSteel in wooden crates with plastic caps. This protective packaging protects against damage during transportation. All orders have export-ready documentation. Check our stainless steel piping products for more details.

For technical support or product information, customers should directly contact us and send the project requirements to get an accurate quote.

Stainless Steel 316 Pipe Fittings Standard Specification
Specifications ASTM A403 / ASME SA403
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size Range 15 NB UP TO 1200 NB ; 1/8" NB TO 48" NB
Schedule SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXS.
Type Seamless & 100% X-Ray Welded, Fabricated
ASTM A403 Stainless Steel WP316 Buttweld Fittings Equivalent Grades
STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 316 Fittings 1.4401 / 1.4436 S31600 SUS 316 316S31 / 316S33 - Z7CND17‐11‐02 X5CrNiMo17-12-2 / X3CrNiMo17-13-3

Gr.316 Stainless Steel A403 Fittings Chemical Composition
% 316 316L 316H 316Ti
C 0.0-0.07 0.0-0.03 0.04-0.08 0.0- 0.08
Mn 0.0-2.0 0-2.0 0.0-2.00 0.0-2.00
Si 0.0-1.0 0.0-1.00 0.0-1.00 0.0- 1.00
P 0.0-0.05 0.0-0.05 0-0.04 0.0-0.05
S 0.0-0.02 0.0-0.02 0.0-0.02 0.0-0.03
Cr 16.50-18.50 16.50-18.50 16.50-18.50 16.50- 18.50
Mo 2.00-2.50 2.00-2.50 2.00-2.50 2.00- 2.50
Ni 10.00-13.00 10.00-13.00 10.00-13.00 10.50- 14.00
Ti - - - 0.40- 0.70
Fe balance balance balance balance

SS 316 Pipe Fittings Mechanical Properties
Grade Tensile Strength (MPa) min Elongation (% in 50mm) min Yield Strength 0.2% Proof (MPa) min Hardness
Rockwell B (HR B) max Brinell (HB) max
SS 316 515 40 205 95 217

SS 316 Pipe Fittings Physical Properties
Grade Tensile Str
(MPa) min
Yield Str
0.2% Proof
(MPa) min
Elong
(% in 50mm) min
Hardness
Rockwell B (HR B) max Brinell (HB) max
316 515 205 40 95 217
316L 485 170 40 95 217
316H 515 205 40 95 217

316 Pipe Fittings Dimension, Wall Thickness, Schedule Weight Chart

Nom. Pipe Size 90° Elbows 45° Elbows 180° Return Bends Tees Lap Joint Stub Ends Caps
Long Rad. Short Rad. 3R Long Rad. 3R Long Rad. Short Rad. C M F G R E
A A A B B O K O K
½ 1.50 - - 0.62 - 3.00 1.88 - - 1.00 1.00 3.00 1.38 0.12 1.00
¾ 1.50 - - 0.75 - 3.00 2.00 - - 1.12 1.12 3.00 1.69 0.12 1.00
1 1.50 1.00 - 0.88 - 3.00 2.19 2.00 1.62 1.50 1.50 4.00 2.00 0.12 1.50
1.88 1.25 - 1.00 - 3.75 2.75 2.50 2.06 1.88 1.88 4.00 2.50 0.19 1.50
2.25 1.50 - 1.12 - 4.50 3.25 3.00 2.44 2.25 2.25 4.00 2.88 0.25 1.50
2 3.00 2.00 6.00 1.38 2.50 6.00 4.19 4.00 3.19 2.50 2.50 6.00 3.62 0.31 1.50
3.75 2.50 7.50 1.75 3.12 7.50 5.19 5.00 3.94 3.00 3.00 6.00 4.12 0.31 1.50
3 4.50 3.00 9.00 2.00 3.75 9.00 6.25 6.00 4.75 3.38 3.38 6.00 5.00 0.38 2.00
5.25 3.50 10.50 2.25 - 10.50 7.25 7.00 5.50 3.75 3.75 6.00 5.50 0.38 2.50
4 6.00 4.00 12.00 2.50 5.00 12.00 8.25 8.00 6.25 4.12 4.12 6.00 6.19 0.44 2.50
5 7.50 5.00 15.00 3.12 - 15.00 10.31 10.00 7.75 4.88 4.88 8.00 7.31 0.44 3.00
6 9.00 6.00 18.00 3.75 7.44 18.00 12.31 12.00 9.31 5.62 5.62 8.00 8.50 0.50 3.50
8 12.00 8.00 24.00 5.00 9.94 24.00 16.31 16.00 12.31 7.00 7.00 8.00 10.62 0.50 4.00
10 15.00 10.00 30.00 6.25 12.44 30.00 20.38 20.00 15.38 8.50 8.50 10.00 12.75 0.50 5.00
12 18.00 12.00 36.00 7.50 14.88 36.00 24.38 24.00 18.38 10.00 10.00 10.00 15.00 0.50 6.00
14 21.00 14.00 42.00 8.75 17.38 42.00 28.00 28.00 21.00 11.00 11.00 12.00 16.25 0.50 6.50
16 24.00 16.00 48.00 10.00 19.88 48.00 32.00 32.00 24.00 12.00 12.00 12.00 18.50 0.50 7.00
18 27.00 18.00 54.00 11.25 22.38 54.00 36.00 36.00 27.00 13.50 13.50 12.00 21.00 0.5 8.00
20 30.00 20.00 60.00 12.50 24.88 60.00 40.00 40.00 30.00 15.00 15.00 12.00 23.00 0.50 9.00
22 33.00 22.00 66.00 13.50 27.31 66.00 44.00 44.00 33.00 16.50 16.50 12.00 25.25 0.50 10.00
24 36.00 24.00 72.00 15.00 29.81 72.00 48.00 48.00 36.00 17.00 17.00 12.00 27.25 0.50 10.50
26 39.00 - 78.00 16.00 32.31 - - - - 19.50 19.50 - - - 10.50
28 42.00 - 84.00 17.25 34.75 - - - - 20.50 20.50 - - - 10.50
30 45.00 - 90.00 18.50 37.25 - - - - 22.00 22.00 - - - 10.50
32 48.00 - - 19.75 - - - - - 23.50 23.50 - - - 10.50
34 51.00 - 102.00 21.00 42.25 - - - - 25.00 25.00 - - - 10.50
36 54.00 - 108.00 22.25 44.69 - - - - 26.50 26.50 - - - 10.50
38 57.00 - 114.00 23.62 47.25 - - - - 28.00 28.00 - - - 12.00
40 60.00 - 120.00 24.88 49.75 - - - - 29.50 29.50 - - - 12.00
42 63.00 - 126.00 26.00 52.19 - - - - 30.00 28.00 - - - 12.00
44 66.00 - 132.00 27.38 54.69 - - - - 32.00 30.00 - - - 13.50
46 69.00 - 138.00 28.62 57.19 - - - - 33.50 31.50 - - - 13.50
48 72.00 - 144.00 29.88 59.69 - - - - 35.00 33.00 - - - 13.50

Stainless Steel 316 Pipe Fittings Price List India

Size SS 316 ELBOW 90° Aprox. Wt/Unit FOB
INR
CIF
INR
FOB
USA $
CIF
USA $
FOB
EURO €
CIF
EURO €
FOB
STG UK Pound
CIF
STG UK Pound
15mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 0.08 101.91 109.69 1.529 1.662 1.835 1.994 1.030 1.119
20mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 0.11 122.10 131.63 1.835 1.994 2.202 2.393 1.236 1.343
25mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 0.16 148.49 160.31 2.235 2.429 2.682 2.915 1.505 1.636
32mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 0.27 171.78 185.63 2.588 2.813 3.105 3.375 1.743 1.894
40mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 0.39 257.16 278.44 3.881 4.219 4.658 5.063 2.614 2.841
50mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 0.68 404.65 438.75 6.116 6.648 7.339 7.977 4.119 4.477
65mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 1.44 932.50 1012.50 14.114 15.341 16.936 18.409 9.505 10.332
80MM ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 2.14 1398.25 1518.75 21.170 23.011 25.405 27.614 14.258 15.497
100mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 4.03 2562.63 2784.38 38.813 42.188 46.575 50.625 26.139 28.412
125mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 6.80 4969.00 5400.00 75.273 81.818 90.327 98.182 50.694 55.102
150mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 10.44 7453.00 8100.00 112.909 122.727 135.491 147.273 76.041 82.653
200mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 21.11 16302.25 17718.75 246.989 268.466 296.386 322.159 166.339 180.804
250mm ASTM A403 WP 316 B16.9 BW R=1.5D, SCH-40S 37.17 38813.50 42187.50 588.068 639.205 705.682 767.045 396.046 430.485

Other Types of Stainless Steel 316 Pipe Fittings

Schedule 10 Stainless Steel 316 Pipe Fittings, Stainless Steel 316 Welded Fittings Distributor in India, 316 Stainless Steel Pipe Fittings dimensions, MSS SP-43 or MSS SP-79 SS DIN 1.4401 / 1.4436 Butt weld Fittings Distributors in Mumbai, Buy Grade 316 Wrought Austenitic Stainless Steel Piping Fittings, Stainless Steel 316 Weldable Elbow Fittings Stockist in Mumbai, ASME B16.28 UNS S31600 SS Industrial Pipe Fittings, Stainless Steel ASTM A403 WP316 Pipe Fittings Price List, WP316 SS A403 Fittings Suppliers in India, SS 316 Seamless Pipe Fitting Traders, Stainless Steel WP316 ASTM A403 Fittings, ASME SA403 Stainless Steel WP316 Large Diameter Butt weld Fittings Wholesalers, 316 SS ANSI B16.9 Buttweld Pipe Fittings.

Preview Product Matrials Grade Other Types
SS 316 Elbows Elbow Stainless steel, SS, Austenitic Stainless Steel Gr 316 SS 316 Elbows, 316 Stainless steel 45 deg Elbow, 316 SS 90° Elbow, Stainless steel 316 Long Radius Elbow, ASTM A403 SS 316 Short Radius Elbow, ASME SA403 Stainless steel 90 Deg LR Elbows Stockists in India, UNS S31600 SS Reducing Elbow Suppliers in Mumbai, AISI 316 SS 45° SR Elbow, DIN 1.4401 / 1.4436 Seamless Elbow Fitting Exporters, Stainless Steel SUS 316 Welded Elbow Manufactures in India.
SS 316 Tees Tee Stainless steel, SS, Austenitic Stainless Steel Gr 316 SS 316 Tees, UNS S31600 Equal Tee Supplier in India, Stainless Steel AISI 316 Weldable Tees, DIN 1.4401 / 1.4436 Unequal Tee Manufactures, Stainless Steel 316 Straight Tee, SS SUS 316 Reducing Tee Stockists, Stainless Steel ASTM A403 WP316 Tee, SS 316 Seamless Tee, 316 SS Welded Tee Fittings Exporters in Mumbai.
SS 316 Reducers Reducer Stainless steel, SS, Austenitic Stainless Steel Gr 316 ASTM A403 WP316 Stainless Steel Reducers Suppliers, SUS 316 SS Concentric Reducer Fittings Stockists, ASME SA403 SS WP316 Eccentric Reducer Exporters, AISI 316 Steel Weldable Reducer Fittings, UNS S31600 Seamless Reducer, DIN 1.4401 / 1.4436 Welded Reducers Manufactures and Distributors in India Mumbai.
SS 316 Stub Ends Stub End Stainless steel, SS, Austenitic Stainless Steel Gr 316 SS 316 Stub End Fittings, Stainless Steel ASTM A403 WP316 Long Stub End, UNS S31600 Short Stubends Manufactures in India, DIN 1.4401 / 1.4436 SS Lap Joint Stub End Supplier and Exporter, AISI 316 Stainless Steel Weldable Stub end, SUS 316 SS Seamless Stub End Stockists in Mumbai
SS 316 Caps Cap Stainless steel, SS, Austenitic Stainless Steel Gr 316 SS 316 Pipe End Cap, ASTM A403 WP316 Stainless Steel Caps, UNS S31600 Cap Fittings, DIN 1.4401 / 1.4436 Buttweld Cap, AISI 316 Stainless Steel Weldable End Cap, SUS 316 SS Seamless Pipe Cap, SS AISI 316 End Cap Suppliers and Exporters in Mumbai, India.
SS 316 Nipples Nipples Stainless steel, SS, Austenitic Stainless Steel Gr 316 Stainless Steel 316 Buttweld Nipple, ASTM A403 WP316 SS Pipe Nipple, UNS S31600 Nipple Fittings, DIN 1.4401 / 1.4436 Swage Nipple Dealers in Mumbai, ASME/ANSI B16.9 MSS-SP-43 SS 316 Swage Nipple, Type 316 Stainless Steel ASME SA403 Seamless Nipple, SS SUS 316 Welded Nipple Fittings, AISI 316 Stainless Steel Barrel Nipple, SS 316 Weldable Reducing Nipple in India.
SS 316 Cross Cross Stainless steel, SS, Austenitic Stainless Steel Gr 316 ASME SA403 SS 316 Welded Cross Fitting Manufactures, ASTM A403 WP316 Stainless Steel Buttweld Cross Trader in India, UNS S31600 Equal Cross, DIN 1.4401 / 1.4436 Reducing Cross, ANSI B16.9 AISI Type 316 SS Unequal Cross, SS SUS 316 Seamless Cross, Grade 316 Stainless Steel Weldable Cross Fittings.
SS 316 Bends Bend Stainless steel, SS, Austenitic Stainless Steel Gr 316 SS 316 Long Radius Bend, ASTM A403 Stainless Steel WP316 Piggable Bend, SUS 316 SS Short Radius Bend, AISI 316 Stainless Steel Long Radius Bends R = 3D, 5D, 6D, 8D, 10D and 20D In 15 Deg, 30 Deg, 60 Deg & 90 Deg And Drawing Based Butt Weld Fitting (Customised), Stainless Steel Bends, UNS S31600 Pipe Bends, DIN 1.4401 / 1.4436 SS U-bends, ASME/ANSI B16.9 MSS-SP-43 Stainless Steel 316 Seamless Bends, SS 316 Weldable Pipe Bends Fittings
SS 316 Collar Collar Stainless steel, SS, Austenitic Stainless Steel Gr 316 SS 316 Collar, UNS S31600 Collar, DIN 1.4401 / 1.4436 Collar, Stainless Steel ASTM A403 WP316 Collar, ANSI B16.9 Type AISI 316 SS Collar, SS 316 Seamless Collar, SUS 316 SS Weldable Collar Fittings, ANSI/ASME B16.9 SS 316 Buttweld Collar.

Frequently Asked Questions

SS 316 pipe fittings connect, redirect or terminate pipe transport of corrosive fluids. They are used in chemical plants, offshore platforms, marine piping and pharmaceutical lines where chloride and acid exposure would degrade lower grades quickly.

Molybdenum content between 2% and 3% forms a stable passive oxide layer that resists pitting from chlorides and acids. This addition pushes the pitting resistance equivalent number past 24, well above SS 304's rating.

Fittings comply with ASTM A403 for wrought fittings and ASME B16.9 for dimensional tolerances on butt weld types. Threaded and socket weld fittings follow ASME B16.11. Corrosion testing follows ASTM A262 Practice C.

Fittings are available from 1/2 inch up to 48 inches in nominal pipe size. Standard wall thicknesses follow schedules 10S, 40S, 80S, and 160. Specific sizes depend on the required system schedules.

Grade 316 has added molybdenum. Grade 304 does not. This addition allows 316 to withstand chlorides, industrial solvents, and saline environments without rusting. They last significantly longer in harsh chemical conditions.

ASTM A403 316 Stainless Steel Pipe Fittings Application Industry

Oil & Gas Industry

Oil & Gas Industry

Chemical Industry

Chemical Industry

Petrochemical Industry

Petrochemical

Power Generation Industry

Power Industry

Architecture, Building and construction

Construction

Fertilizers Industry

Fertilizers Industry

Automotive Industry

Automotive Industry

Food And Beverage Industry

Food Industry

Suppliers and Exporters of Stainless Steel 316 Pipe Fittings in Cities Like

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Suppliers and Exporters of Stainless Steel 316 Buttweld Fittings in Countries Like

Hong Kong, Ecuador, Ireland, Denmark, Iran, Jordan, Taiwan, Netherlands, Nigeria, Italy, Costa Rica, Thailand, Zimbabwe, Israel, China, Finland, Serbia, Russia, Ghana, Chile, Bulgaria, Belarus, Romania, Brazil, Azerbaijan, Belgium, Trinidad & Tobago,Tunisia, Argentina, Singapore, France, New Zealand, Namibia, South Korea, Nigeria, Bangladesh, Algeria, Lebanon, Sweden, Slovakia, Kazakhstan, Bhutan, Vietnam, Lithuania, Iran, Colombia, United States, United Arab Emirates, Macau, Germany, Morocco, Mongolia, Switzerland, Japan, Gambia, Peru, Gabon, United Kingdom, Malaysia, Iraq, Poland, Pakistan, Saudi Arabia, Angola, Sri Lanka, Ukraine, Canada, Chile, Qatar, Greece, Oman, Libya, Kenya, Czech Republic, Kuwait, Puerto Rico, Norway, Indonesia, Mexico, Philippines, Australia, Poland, Afghanistan, South Africa, Spain, Hungary, India, Venezuela, Croatia, Egypt, Tibet, Nepal, Bahrain, Portugal, Estonia, Bolivia, Turkey, Austria, Yemen, Mexico.