SS 347 Pipe Fittings


Reliable Pipes and Tubes Ltd. is a leading manufacturer, supplier and exporter of stainless steel 347 (1.4550), and 347H (1.4961) buttweld pipe fittings, forged fittings and flanges. RELIABLE PIPES & TUBES LTD. offers a complete range of stainless steel 347 pipe fittings such as SS 347 reducer, SS 347 elbow, SS 347 tee, SS 347 cross, SS 347 end caps, SS 347 stub ends and SS 347 pipe bends. Stainless steel 347 and 347H 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 347 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 347 pipe fittings, SS 347 flanges and SS 347 pipe bends. Our specialty is to manufacture and supply large size fabricated 100% radiography tested SS 347 elbows, SS 347 reducers, SS 347 tees and SS 347 large diaReliable Pipes and Tubes fabricated pipes.

Stainless ASTM A403, ASTM A182, ASTM A240 – 347/347H PIPE FITTINGS, SS 347/347H FLANGES SUPPLIER

stainless steel 347/347H pipe fittings
SS 347/347H Pipe Fittings
stainless steel 347/347H pipe flanges
SS 347/347H Pipe Flanges
stainless steel 347/347H forged fittings
SS 347/347H Forged Fittings


347/347H stainless steel is type of common austenitic stainless steels such as 304, 316 and 321, but also contains columbium and is most widely used in high temperature applications. Stainless steel 347 has excellent forming and welding qualities, and the addition of columbium and tantalum helps for exceptional intergranular corrosion resistance.

Grade 347 is similar to grade 321, but with slightly improved corrosion resistance in strongly oxidizing environments. Stainless steel 347 is essentially non-magnetic in the annealed condition and can only be hardened by cold working.

RELIABLE PIPES & TUBES LTD. 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.

Stainless Steel Tradename UNS no. Werkstoff No. Density (g/cm3)
347 Stainless 347 S34700 1.4550 7.96
347H Stainless 347H S34709 1.4961 7.96


SS 347/347H Pipe Fittings Production Range

Specification ASTM A182 / A403 & ASME SA182 / SA403
Type Seamless / Welded / Fabricated
Variants 347, 347H
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Range ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS.
Dimensions ANSI/ASME B16.9, B16.28, MSS-SP-43.


Buttweld Stainless Steel 347/347H Pipe Fittings

Seamless/Welded 100% Radiography Tested

Products Size
SS 347 Elbows – Long Radius SS 347/347H Stub Ends Sizes 1/2″ – 48″
SS 347/347H Elbows – Short Radius SS 347H Crosses
SS 347H Reducing Elbows SS 347 Reducing Crosses
SS 347 45° Elbows SS 347/347H 180° LR Return Bends
SS 347 Tees SS 347H 180° SR Return Bends
SS 347H Equal Tees SS 347/347H Pipe Bends / Piggable Bends
SS 347/347H Reducers SS 347 Couplings
SS 347H Concentric Reducers SS 347/347H Steel Pipe Nipples
SS 347 Eccentric Reducers SS 347H Forged/Plate Cut Rings
SS 347 3D Elbow SS 347/347H End Caps
SS 347/347H 5D Elbow SS 347 Forged / Plate Circles
SS 347/347H Pipe Fittings SS 347 Pipe Fittings


High Pressure Forged SS 347/347H Pipe Fittings

Threaded and Socket Weld Pipe Fittings

Products Size
SS 347/347H 90° Elbows SS 347/347H Couplings Sizes 1/8″ – 4″
Pressure Ratings –
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
SS 347 45° Elbows SS 347H Reducers
SS 347H Street Elbows SS 347/347H Inserts
SS 347/347H Tees SS 347 Caps
SS 347H Crosses SS 347/347H Unions


SS 347/347H Flanges

SS 347/347H Forged and Plate Flanges

Specification ASTM A182 / A240 & ASME SA182 / SA240
Grade 347 (1% Ni), 347H (4% Ni)
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size 1/8″ to 36"
Dimensions ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.


Product Size
SS 347/347H Slip-On Flanges SS 347H Threaded Flanges 1/8″ – 36″
Raised Face or Flat Face
SS 347 Weld Neck Flanges SS 347/347H Socket Weld Flanges
SS 347/347H Blind Flanges SS 347 Reducing Flanges
SS 347 Lap Joint Flanges SS 347H Plate Flanges