Stainless Steel 317L Couplings manufacturer

317L Stainless Steel couplings are a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.

Steber Steel is only Supplier in India who maintains Large Diameter and High Thickness ASTM A182 Seamless, Welded Stainless Steel 317L Couplings. All SS 317L Couplings are manufactured in India, with raw materials coming from reputed Mills in India enable us for prompt delivery to countries like Dubai, Ras Al Khaimah, UAE, Kuwait, Qatar, Saudi Arabia, Turkey, Israel, Iraq, Iran, Oman, Bahrain, Nigeria, Kenya, Mozambique, South & West Africa, Indonesia, Malaysia, Singapore, Thailand & Philippines in any emergency or industrial break down..

317L Stainless Steel Couplings Specification

Product Name: 317L Stainless Steel Couplings
We accept all small/large quantity orders.

  • 317L Grade: SUPER AUSTENITIC 317L Couplings/ SS 317L Couplings/ WNR 1.4438 Couplings/ UNS S31703 Couplings/ AISI 317L Couplings/ SUS 317L Couplings/ INOX 317L Couplings/ Alloy 317L Couplings/ SS317L Couplings/ Stainless Steel SUS 317L Couplings/ ANSI 317L Couplings/ Steel 317L Couplings/ Stainless Steel UNS S31703 Couplings/ SAE 317L Couplings/ ASME SA403 SS 317L Couplings/ SS 2367 / Stainless Steel DIN 1.4438 / Type 317L / X 2 CrNiMo 18 16 / SS317L
  • Typical manufacturing specifications: ASTM A182 317L, ASTM A182 317L, ASME SA403 317L, ASME SA403 317L, SAE J405
  • S 317L Couplings Manufacturing Standards: ASME: ANSI B16.9, ANSI B16.11, ANSI B16.28, MSS-SP-43, DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, EN: EN10253-1, EN10253-2, BS 4504, EN-1092, JISB2311, JIS B2312, JIS B2313, DIN 2605, DIN 2606, DIN2615, DIN2616, BG12459-90, GB/T13401, HGJ514, SH3408, SH3409, HG/T21635, HG/T21631
  • Size Range: 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
  • Thickness: SCH: 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS, Custom Thickness
  • Origin: European Origin, Indian Origin, US Origin, Korean Origin, Sweden Origin, Ukraine Origin, Japanese Origin Materials
  • Top 10 Manufacturer of 317L Couplings: Raccortubi S.p.A. Pipe Couplings, Italy, Erne Fittings Pipe Couplings, Austria, Melesi Pipe Couplings, Italy, Mega Pipe Couplings, Italy, Ulma Pipe Couplings, Spain, TecnoForge Pipe Couplings, Italy, BENKAN Corporation Pipe Couplings, Japan, BKL- Thai Benkan Pipe Couplings, Thailand, Lame S.r.l. Pipe Couplings, Italy, Metal far Pipe Couplings, Italy, Steber Steel, India
  • Great offer on: Pipe caps– DIN 28011 / EN 10253 (DIN 2617), Pipe Elbow -EN 10253 type A (DIN 2605), Pipe Tee/ T-pieces with same outlet – EN 10253 type A (DIN 2615), Concentric reducers- EN 10253 type B (DIN 2616)
  • Delivery: 15-20 days
  • Application: Research, science, and industry for sterile and aseptic process engineering.
  • Material: DIN 1.4305, DIN 1.4301, DIN 1.4307, DIN 1.4948, DIN 1.4401, DIN 1.4404, DIN 1.4919, DIN 1.4571, DIN 1.4541, DIN 1.4878, DIN 1.4460, DIN 1.4550, DIN 1.4961, DIN 1.4840, DIN 1.4845, DIN 1.4449, DIN 1.4438, DIN 1.4841, DIN 1.4006, DIN 1.4005, DIN 1.4021, DIN 1.4016, DIN 1.4104, DIN 1.4057, DIN 1.4125, DIN 1.4762, DIN 1.4742, DIN 1.4438, DIN 1.4542, DIN 1.4545, DIN 1.4534, DIN 1.4980, DIN 1.3964
  • Value Added Service: Polish (Electro & Commercial), Heat Treatment, Annealed & Pickled, Sand Blasting, Machining Etc.

317L Stainless Steel Couplings Packaging & Shipping:

317L Stainless Steel Couplings Manufacturer
317L Stainless Steel Couplings Packed

SS 317L Couplings Packing: We focus on every procedure to assure quality, the package we usually take is pack WNR 1.4438 Couplings with environmental poly bags, and then in free fumigation wooden cases or wooden palte. Also can accept customized package such as OEM by negotiation.

Steber Steel offers just about everything to meet your UNS S31703 Couplings pack requirements. Lot of emphasis is placed on the packing and packaging. The AISI 317L Couplings are packed in wooden corrugated boxes foiled in plastic wraps and bubble wraps.

317L Stainless Steel Couplings Marking: All SUS 317L Couplings are marked with size and specification. Or as per customer’s requirement;

So, besides the fact that we can arrange freight transportation for you, we can before that:

  • Specifically mark parts or packages;
  • Provide for a special packing according to what is required by the shipping method or by you.

We mark the INOX 317L Couplings as needed with the most suitable marking technique.

When packaging and packing, our experienced warehouse staff systematically takes the greatest precautions for your Alloy 317L Couplings to be optimally protected during transportation. We pack the SS317L Couplings according to the appropriate method: strapped pallet, wooden crate, overseas packing (ISPM15).

Markings on the Stainless Steel 317L, UNS S31703,  WNR 1.4438 Couplings

The full identification of the Couplings should be continuously marked down its whole length, including:

  1. Nominal Couplings Size
  2. Schedule (Wall Thickness)
  3. Specification
  4. Grade
  5. Method of Manufacture (Seamless or Welded)
  6. Heat Number
  7. Manufacturer’s Name or Symbol
  8. Customized marking

CONTACT US FOR A QUICK QUOTE, Get 317L Stainless Steel Elbow price list, send an email to us at

317L Stainless Steel Couplings Chemical Composition

Ni Cr Mo Mn Si
11.0 – 15.0 18.0 – 20.0 3.0 – 4.0 2.0 Max .75 Max
C N S P Fe
0.03 Max 0.1 Max 0.03 Max 0.045 Max Balance

317L Stainless Steel Couplings Mechanical Properties

Ultimate Tensile Strength, ksi Minimum .2% Yield Strength, ksi Minimum Elongation Percent Hardness Max.
75 30 35 217 Brinell

Physical Properties of 317L Stainless Steel Couplings

Density: 0.285 lb/inch3
Melting Point: 2540 – 2630°F
Poisson’s Ratio: 0.3
Electrical Resistivity: 475 Ohm-circ mil/ft

Temperature, °F 70 212 392 572
Coefficient* of Thermal Expansion, in/in°F x 10-6 9.2 10.1 10.8
Thermal Conductivity
Btu • ft/ft2 • hr • °F
Modulus of Elasticity Dynamic, psi x 106 29

* 70°F to indicated temperature.

317L Material Specifications

Grade UNS No Old British Euronorm (DIN)
Type 317L S31703 317 S 12 1.4438 X2CrNiMo18-15-4
Normen KS AFNOR NAS Japanese JIS
STS317L/ D3693/G3601 Z 2 CND 19-15 NAS 317L SUS 317L


UNS S31703
X2CrNiMo1815 SUS317L
DIN X2CrNiMo18-15-4, DIN X2CrNiMo1864, ANFOR Z2CND19-15-04, ANFOR Z3CND19-15-04, UNI X2CrNiMo1815, JIS SUS317L, JIS SUS317LFB, JIS SUS317LTB, JIS SUS317LTP, JIS SUSF317L, JIS SUSY317L, AISI 317L, UNS S31703

317L Stainless Steel Couplings Possible Alternative Grades

British German
AISI UNS Swedish Japanese
Type Bs Eu W.No. DIN
317 S31700 317S16 1.4449 X 5 CrNiMo 17 13 -SUS 317
317L S31703 317S12 1.4438 X 2 CrNiMo 18 16 2367 SUS 317L

SUS 317L Couplings Heat Resistance

Significantly better corrosion resistance that T-316 in the same environments. Good oxidation resistance in continuous service to 925°C and in intermittent service to 879°C.

AISI 317L Couplings Heat Treatment

AISI 317L Couplings is non-magnetic in the annealed condition and is non-hardenable by heat treatment. Machinability is 39% – 65 surface feet per minute.

SS 317L Couplings Fabrication

Alloy 317L Couplings can be easily welded and processed by standard shop fabrication practices.

317L Stainless Steel Couplings producing through Cold forming

Shearing, stamping, heading and drawing can be successfully performed . To remove internal stresses, a post-work annealing is recommended.

Stainless Steel 317L Couplings Machining

Low speeds and constant feeds will minimize this alloy’s tendency to work harden. Tougher than 304 stainless Couplings with a long stringy chip, the use of chip breakers is recommended.

317L Couplings Welding

Alloy 317L Couplings can be readily welded by most standard processes. A post weld heat treatment is not necessary. 317L is readily welded by a full range of conventional welding procedures (except oxyacetylene). AWS E317L/ER317L filler metal or austenitic, low carbon filler metals with molybdenum content higher than that of 317L, or a nickel-base filler metal with sufficient chromium and molybdenum content to exceed the corrosion resistance of 317L should be used to weld 317L steel.

Alloy 317L Couplings Hot Forming

AISI 317L Couplings is non-magnetic in the annealed condition and is non-hardenable by heat treatment. Machinability is 39% – 65 surface feet per minute.

317L Stainless Steel Couplings Applications & Usage:

Some of the major applications of grade stainless steel 317L Couplings include:

  • Seawater cooling devices
  • Wiring in electrostatic precipitators
  • Oil refinery components
  • Gas scrubbing plants
  • Pulp and paper processing industries
  • Acetic, phosphoric and sulphuric acid processing plants
  • Oil and Gas Production- offshore process equipment