Packaging & Delivery
| Packaging Detail: | Standard export packing or as per request |
| Delivery Detail: | 7 - 20 days |
Specifications
ASTM A312 TP347H Seamless Stainless Steel Pipes
1. SEAMLESS
2. thickness: SCH80
3. Size: DN250
China Stainless Steel Pipes Manufacturer Yaang offers ASTM A312 TP347H Seamless Stainless Steel Pipes, DN250, SCH80.
Alloy 347 stainless steel are austenitic stainless steels that contain stabilizing elements. This alloys is easily welded. Annealing may not be required after welding unless stress relief is desired. 347 stainless steel has excellent resistance to oxidation and corrosion. With high creep strength, 347 stainless steel work best up to 1600 °F. The addition columbium plus tantalum in 347 stainless steel give some desired characteristics like:
- Prevents harmful carbide precipitation in the heat affected zone (HAZ) of the weld area
- Imparts substantial immunity to intergranular corrosion
- Reduced embrittlement in the HAZ of the weld area
SPECIFICATIONS OF STAINLESS STEEL 347/347H SEAMLESS PIPES :
| Specification : | ASTM A312/ASME SA213 / A249 / A269 / A312 / A358 CL. I to V |
| Dimensions : | ASTM, ASME and API |
| Outer Diameter : | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB |
| Length : | Single Random, Double Random & Required Length |
| Size : | 1/8" NB to 72" NB & 1mm OD to 1500mm OD |
| Thickness: | 0.3mm to 100mm,SCH 5, SCH 10, SCH 20, SCH 30, SCH 40,SCH STD, SCH 60, SCH 80,SCH XS, SCH 100, SCH 120 SCH 140 SCH 160,SCH XXS. |
| Types : | Seamless, Welded, ERW, Boiler tubes, Capillary, Fabricated, Corrugated, Conduit & Large Diameter Pipes. |
| Form : | Round pipes/tubes, Square pipes/tubes, Rectangle pipes/tubes, Coiled tubes, Hydraulic tubes, Ep pipes/ tubes, etc. |
| End : | Plain end, Beveled end, Threaded end & Conduit |
GRADE SPECIFICATIONS OF STAINLESS STEEL 347/347H SEAMLESS PIPES :
| Stainless Steel | Tradename | UNS no. | Werkstoff No. |
| 347 | 347 Stainless | S34700 | 1.4550 |
| 347H | 347H Stainless | S34709 | 1.4961 |
CHEMICAL COMPOSITION OF STAINLESS STEEL 347/347H SEAMLESS PIPES :
| C | Cr | Mn | Ni | P | S | Si | Cb/Ta | |
| 347 | 0.08 max | min: 17.0 |
2.0 max | min: 9.0 |
0.04 max | 0.30 |
0.75 |
min:10x C |
| 347H | min: 0.04 |
min: 17.0 |
2.0 max | min: 9.0 max: 13.0 |
0.03 max | 0.30 max |
0.75 max |
min:10x C max: 1.0 |
MECHANICAL PROPERTIES OF STAINLESS STEEL 347/347H SEAMLESS PIPES :
| Grade | Tensile Strengtd ksi (MPa) min | Yield Strengtd 0.2% ksi offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
| 347/347H | 75 (515) |
30 (205) |
40 | 201 | 95 |
PHYSICAL PROPERTIES OF STAINLESS STEEL 347/347H SEAMLESS PIPES :
| Density lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
| at 68 °F | at 68 – 212°F | at 68 – 1832°F | 68-932°F | at 32 – 212°F | in tension (E) |
| 0.288 | 9.2 | 11.4 | 14.7 | 0.12 | 28 x 106 |
Application:
- Food processing equipment, particularly in beer brewing, milk processing & wine making.
- Kitchen benches, sinks, troughs, equipment and appliances
- Architectural panelling, railings & trim
- Chemical containers, including for transport
- Heat Exchangers
- Woven or welded screens for mining, quarrying & water filtration
- Threaded fasteners
- Springs
- Others
347 and 347H stainless steel is common in the petroleum refining industries. Alloy 347 and 347H stainless steel is used to make radiant superheaters, boiler tubes, high pressure steam pipe, and general refinery piping. They are also used for heavy-duty exhaust systems and manifolds.
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