SS 321/321H Pipe Fittings
Stainless Steel 321/321H PIPE FITTINGS, SS 321 PIPE BENDS, ELBOWS, 321H Pipe FLANGES MANUFACTURER/SUPPLIER IN INDIA
Reliable Pipes and Tubes Ltd. is a leading manufacturer and supplier of stainless steel 321 (1.4541) and 321H (1.4878) grade buttweld pipe fittings and flanges. RELIABLE PIPES & TUBES LTD. offers a complete range of stainless steel 321/321H pipe fittings such as SS 321 reducer, SS 321 elbow, SS 321 tee, SS 321 cross, SS 321 end caps, SS 321 stub ends and SS 321 pipe bends. Stainless steel 321 and 321H 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 321 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 321 pipe fittings, SS 321 flanges and SS 321 pipe bends. Our specialty is to manufacture and supply large size fabricated 100% radiography tested SS 321 elbows, SS 321 reducers, SS 321 tees and SS 321 large diaReliable Pipes and Tubes Ltd.er fabricated pipes.
Stainless ASTM A403, ASTM A182, ASTM A240 – 321/321H PIPE FITTINGS, SS 321/321H FLANGES SUPPLIER
 SS 321/321H Pipe Fittings |
 SS 321/321H Pipe Flanges |
 SS 321/321H Forged Fittings |
STAINLESS STEEL 321 PIPE BENDS, SS 321H ELBOW, SS 321H TEE, SS 321 REDUCER, 321 STUB END Supplier in India.
Grade 321 is a common austenitic 18/8 stainless steel alloy, with the addition of titanium. Type 321 stainless steel is similar to Type 304 stainless steel but with a titanium addition of at least five times the carbon content. The major difference between them is that the titanium addition reduces carbide precipitation during welding.
Stainless steel 321 grade is widely used in high temperature environments of up to 900° C. 321 stainless steel has good welding and forming capabilities and is widely used in operating temperature environments in excess of 500° C. Stainless steel 321H, commonly referred as UNS S32109, is the higher carbon version of the 321 grade, to provide higher temperature strength.
RELIABLE PIPES & TUBES LTD. also stocks and supplies a complete range of SS 321 pipes to complement our existing production range of SS 321 buttweld fittings and SS 321 flanges. Stainless steel 321 seamless 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) |
| 321 | 321 Stainless | S32100 | 1.4541 | 7.92 |
| 321H | 321H Stainless | S32109 | 1.4878 | 7.92 |
SS 321/321H Pipe Fittings Production Range
| Specification | ASTM A182 / A403 & ASME SA182 / SA403 |
| Type | Seamless / Welded / Fabricated |
| Variants | 321, 321H |
| 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 321/321H Pipe Fittings
Seamless/Welded 100% Radiography Tested
| Products | Size | |
| SS 321 Elbows – Long Radius | SS 321/321H Stub Ends | Sizes 1/2″ – 48″ |
| SS 321/321H Elbows – Short Radius | SS 321H Crosses | |
| SS 321H Reducing Elbows | SS 321 Reducing Crosses | |
| SS 321 45° Elbows | SS 321/321H 180° LR Return Bends | |
| SS 321 Tees | SS 321H 180° SR Return Bends | |
| SS 321H Equal Tees | SS 321/321H Pipe Bends / Piggable Bends | |
| SS 321/321H Reducers | SS 321 Couplings | |
| SS 321H Concentric Reducers | SS 321/321H Steel Pipe Nipples | |
| SS 321 Eccentric Reducers | SS 321H Forged/Plate Cut Rings | |
| SS 321 3D Elbow | SS 321/321H End Caps | |
| SS 321/321H 5D Elbow | SS 321 Forged / Plate Circles | |
| SS 321/321H Pipe Fittings | SS 321 Pipe Fittings | |
High Pressure Forged SS 321/321H Pipe Fittings
Threaded and Socket Weld Pipe Fittings
| Products | Size | |
| SS 321/321H 90° Elbows | SS 321/321H Couplings | Sizes 1/8″ – 4″ Pressure Ratings – 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| SS 321 45° Elbows | SS 321H Reducers | |
| SS 321H Street Elbows | SS 321/321H Inserts | |
| SS 321/321H Tees | SS 321 Caps | |
| SS 321H Crosses | SS 321/321H Unions | |
SS 321/321H Flanges
SS 321/321H Forged and Plate Flanges
| Specification | ASTM A182 / A240 & ASME SA182 / SA240 |
| Grade | 321 (1% Ni), 321H (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 321/321H Slip-On Flanges | SS 321H Threaded Flanges | 1/8″ – 36″ Raised Face or Flat Face |
| SS 321 Weld Neck Flanges | SS 321/321H Socket Weld Flanges | |
| SS 321/321H Blind Flanges | SS 321 Reducing Flanges | |
| SS 321 Lap Joint Flanges | SS 321H Plate Flanges | |
