A312 TP347H Seamless Stainless Steel Tube
GNEE sells over 1,500 tons of seamless and welded steel pipes to various engineering industries annually. Our goal is to ensure that our customers have the highest expectations for tube delivery and product quality.
A312 TP347H is an austenitic stainless steel designed for repeated intermittent exposure to temperatures above 800 degrees Celsius. A312 TP347H Corrosion Resistant Pipe is similar to Grade 321 in some mechanical properties, but differs in that it contains niobium in its composition. The material is resistant to most corrosive media at medium to high temperatures.
A312 TP347H High Temperature Stainless Steel Pipe's corrosion resistance, high pressure and temperature resistance make it useful in highly corrosive, high heat applications such as boiler tubes and shells, radiant superheaters, heat exchanger tubes, and oil and gas refineries.
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ASTM A312 TP347H Specification Chart
| ASTM / ASME Name | ASTM A312 / ASTM SA312 |
| ANSI / ASME Standard | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Available Forms and Types | Square, Hex, Round, Rectangle, Hydraulic, Honed |
| Frequently Used | Fabricated, 100% X Ray Welded, ERW, Seamless, CDW, Welded |
| Pipe End Finish | Beveled End, Plain End, Treaded |
| Delivery Condition | Cold Drawn, Polished, Bright Annealed, Annealed and Pickled |
| Surface Coating and Finish | 2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements |
| Pipe Wall Thickness | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
ASTM A312 TP347H Stainless Steel Seamless Pipes Chemical Composition
| Element | 347H |
| Chromium | 17.00 min.-19.00 max. |
| Nickel | 9.00 min.-13.00 max. |
| Carbon | 0.04 min.-0.10 max. |
| Manganese | 2.00 |
| Phosphorus | 0.045 |
| Sulfur | 0.03 |
| Silicon | 0.75 |
| Columbium & Tantalum | 8 x (C + N) min.-1.00 max. |
| Iron | Balance |
ASTM A312 TP347H Stainless Steel Seamless tubes Mechanical Properties
| 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 |
grade Specification Comparison 347H Stainless Steel Pipes and Tubes
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 347 | S34700 | 347S31 | 58G | 1.4550 | X6CrNiNb18-10 | 2338 | SUS 347 |
A312 TP347H stainless steel pipe
Why choose us
Our pipes and tubes have a wide range of applications in many market sectors, including the oil and gas, petrochemical and construction industries. And we can offer different properties for different purposes (e.g. corrosion protection).
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FAQ
1.Q.What's your advantage?
A.Honest business with competitive price and professional service on export process.
2.Q.Can your products be customized?
A.Yes, we can produce and process according to your requirements.
3.Q. Do you have a quality control system?
A.Yes, we have our own quality control laboratory.
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