Stainless SteelTradenameUNS no.Werkstoff No.Density (g/cm3)
316316 StainlessS316001.44018.00
316L316L StainlessS316031.44048.00
316H316H StainlessS316091.49198.00
316Ti316Ti StainlessS316351.45718.00


METLINE Industries is a leading manufacturer and supplier of stainless steel 316 (1.4401), 316L (1.4404) and 316Ti (1.4571) grade buttweld pipe fittings and flanges. METLINE offers a complete range of stainless steel 316/316L pipe fittings such as SS 316 reducer, SS 316 elbow, SS 316 tee, SS 316 cross, SS 316 end caps, SS 316 stub ends and SS 316 pipe bends. Stainless steel 316 and 316L pipe fittings are manufactured in compliance with ASTM A-403 and ANSI B16.9 / 16.28/ MSS SP-43 / Welding Bevel Standards ANSI B 16.25.

We specialise in the manufacture and supply of SS 316 pipe bends in both standard and non standard sizes, with bending radius of 1D to 10D or any other custom bending radius. We offer ex-stock delivery of various standard size and type SS 316 pipe fittings, SS 316 flanges and SS 316 pipe bends. Our specialty is to manufacture and supply large size fabricated 100% radiography tested SS 316 elbows, SS 316 reducers, SS 316 tees and SS 316 large diameter fabricated pipes.

Stainless steel 316 and 316L are the second most commonly used stainless steel grades after 304/304L, being a higher version of 304, with addition of molybdenum and slightly higher content of nickel. The properties of stainless steel 316 are similar to that of Type 304, except that alloy 316 is stronger at elevated temperatures.
316L is the low carbon version, while Type 316H is a higher carbon version of 316 stainless steels. Meanwhile, 316Ti is a titanium stabilized version of 316. Resistance to sensitization is achieved in type 316Ti with titanium additions to stabilize the structure against chromium carbide precipitation, which is the source of sensitization.

METLINE also stocks and supplies a complete range of SS 316 | 316L pipes to complement our existing production range of SS 316 buttweld fittings and SS 316 flanges. Stainless steel 316/316L pipes can be supplied in cut to length sizes and also machined or fabricated to meet your custom piping requirements.

SS 316/316L Flanges Manufacturer/Supplier

SS 316/316L Flanges Manufacturer/Supplier

SS 316/316L Pipe Fittings Manufacturer/Supplier

SS 316/316L Pipe Fittings Manufacturer/Supplier

SS 316/316L Pipes Supplier/Stockholder

SS 316/316L Pipes Supplier/Stockholder

Key Properties of Stainless Steel 316/316L Pipe Fittings, SS 316/316L Flanges

  • High oxidation resistance
  • Better corrosion resistance than Type 304 stainless steel
  • Excellent pitting resistance
  • Strong resistance to most chemicals involved in the paper and textile industries

Common Applications – SS 316/316L Pipe Fittings and 316/316L Flanges

  • Furnace parts
  • Pressure vessels and tanks
  • Industrial boilers
  • Pulp and paper processing equipment
  • Textile processing equipment
  • Offshore marine applications
  • Storage and handling of acetic acid
  • Pharmaceutical and chemical process equipment
  • Heat exchangers
  • Threaded fasteners
  • Industrial fabrications

SS 316/316L Pipe Fittings Production Range

SpecificationASTM A182 / A403 & ASME SA182 / SA403
TypeSeamless / Welded / Fabricated
Variants316, 316L, 316H, 316LN
Bending RadiusR=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Range½”NB to 48”NB in Sch 10s, 40s, 80s, 160s, XXS.
DimensionsANSI/ASME B16.9, B16.28, MSS-SP-43.

Buttweld Stainless Steel 316/316L Pipe Fittings

Seamless/ Welded 100% Radiography Tested

SS 316 Elbows – Long RadiusSS 316 Stub Ends

Sizes 1/2″ – 48″

SS 316Elbows – Short RadiusSS 316 Crosses
SS 316 Reducing ElbowsSS 316 Reducing Crosses
SS 316 45° ElbowsSS 316 180° LR Return Bends
SS 316 TeesSS 316 180° SR Return Bends
SS 316 Fabricated TeesSS 316 Pipe Bends / Piggable Bends
SS 316 ReducersSS 316 Couplings
SS 316 Concentric ReducersSS 316 Pipe Nipples
SS 316 Eccentric ReducersSS 316 Forged/Plate Cut Rings
SS 316 3D ElbowSS 316 End Caps
SS 316 5D ElbowSS 316 Forged / Plate Circles

High Pressure Forged 316/316L Pipe Fittings

Threaded and Socket Weld Pipe Fittings

Products Size
SS 316 90° ElbowsSS 316 Couplings

Sizes 1/8″ – 4″

Pressure Ratings –
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS

SS 316 45° ElbowsSS 316 Reducers
SS 316 Street ElbowsSS 316 Inserts
SS 316 TeesSS 316 Caps
SS 316 CrossesSS 316 Unions

Stainless Steel 316/316L Flanges

Forged and Plate Flanges

SpecificationASTM A182 / A240 & ASME SA182 / SA240
Grade316, 316L, 316H, 316LN
StandardANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size1/8” to 36″
DimensionsANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.


SS 316 Slip-On FlangesSS 316 Threaded Flanges

1/8″ – 36″

Raised Face or Flat Face

SS 316 Weld Neck FlangesSS 316 Socket Weld Flanges
SS 316 Blind FlangesSS 316 Reducing Flanges
SS 316 Lap Joint FlangesSS 316 Plate Flanges

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All fittings and flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At METLINE, all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates:
Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report