Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
| Choose | When | Watch-outs |
|---|---|---|
| A312 seamless pipe | Process piping NPS + schedule | State seamless vs welded |
| A213 / A269 tube | HX / instrument OD×wall | Do not mix pipe schedules casually |
| SS hub | Browse related grades | Confirm dual-cert on MTC |
347H stainless — form: A312 pipe / A213 tube / A269 tube Size: ____ Wall/Sch: ____ Qty: ____ MTC: 3.1/3.2 Destination: ____
Email sales@savoypipinginc.com with destination and any IBR / NACE / TPI notes.
Savoy Piping Inc. supplies 347H — H-grade Nb-stabilised austenitic for creep-range refinery and chemical piping.
Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub
Also see: Stainless steel pipe & tube hub · Buttweld fittings · Flanges · Materials hub.
347H (UNS S34709): Nb-stabilised with H-grade carbon. Mechanical guide: per SA-312 TP347H — confirm PO.
Specify only when 347H is on the datasheet — carbon and grain-size controls matter.
347H vs 321H: plant preference for Nb vs Ti stabiliser.
| 347H Stainless Steel Pipe & Tubes Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
| 347H Stainless Steel Pipe & Tubes Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254,Alloy Steel , ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
| 347H Stainless Steel Pipe & Tubes Type | Seamless Pipe / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| 347H Stainless Steel Pipe & Tubes and 347 Stainless Steel Outer Diameter Size | Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| 347H Stainless Steel Pipe & Tubes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| 347H Stainless Steel Pipe & Tubes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| 347H Stainless Steel Pipe & Tubes Ends | Plain Ends / Beveled Ends |
| 347H Stainless Steel Pipe & Tubes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| 347H Stainless Steel Pipe & Tubes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivate |
| 347H Stainless Steel Pipe & Tubes Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Fittings Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| 347H Stainless Steel Pipe & Tubes Dimension | All Pipes Tube Is Manufactured and Inspected / Tested to the Relevant standards includingASTM And ASME |
| 347H Stainless Steel Pipe & Tubes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| 347H Stainless Steel Pipe & Tubes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| 347H Stainless Steel Pipe & Tubes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| 347H Stainless Steel Pipe & Tubes Material Test Certificate | Stainless Steel Pipe Manufacturers Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
The Chemical Composition of grade 347 Stainless Steel is outlined in the following table
| Element | 347 | 347H |
| Chromium | 17.00 min.-19.00 max. | 17.00 min.-19.00 max. |
| Nickel | 9.00 min.-13.00 max. | 9.00 min.-13.00 max. |
| Carbon | 0.08 | 0.04 min.-0.10 max. |
| Manganese | 2.00 | 2.00 |
| Phosphorus | 0.045 | 0.045 |
| Sulfur | 0.03 | 0.03 |
| Silicon | 1.00 | 1.00 |
| Columbium & Tantalum | 10 x (C + N) min.-1.00 max. | 8 x (C + N) min.-1.00 max. |
| Iron | Balance | Balance |
The Mechanical Properties of grade 347H Stainless Steel and 347h Stainless Steel Plate Typical Values at 68°F (20°C0)are displayed in the following table.
| Yield Strength 0.2% Offset | Ultimate Tensile Strength | Elongation in 2 in. | Hardness | ||
| psi(min.) | (MPa) | psi(min.) | (MPa) | %(min.) | (max.) |
| 30,000 | 205 | 75,000 | 515 | 40 | 201 Brinell |
Physical properties of 347H grade stainless steel in the annealed condition
| Properties | Metric |
| Density | 7.96 g/cm3 |
347H (UNS S34709) is H-grade Nb-stabilised austenitic for creep-range refinery and chemical piping. Chemistry: Nb-stabilised with H-grade carbon.
Pipe A312 / A358 EFW; tube A213 / A269 (and A249 welded where specified).
per SA-312 TP347H — confirm PO
347H vs 321H: plant preference for Nb vs Ti stabiliser.
We supply this product for domestic and export projects with MTC (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, Incoterms and inspection needs on the RFQ.