ASME SA213 TP347H Stainless Steel Boiler Tube
Tube Type: Straight Tubes or U-Bent Tubes
Outside Diameter (OD): 1/2" (12.7 mm) to 5" (127 mm)
Schedule/Wall: BWG 14, 16, 18 or specified decimal thickness
Length: 6 meters, 12 meters, or customized Single/Double Random Length.
Heat Treatment: Solution Annealed at min. 1900°F (1040°C)
Surface Finish:Pickled & Annealed ,Bright Annealed
Ends: Plain Ends , Deburred
Sample：Available
Transport Package：Standard Sea-Worthy Packing
347H Stainless Steel Seamless Pipe Manufacturers , Wide Stockist of SCH40 347H SS Pipe
If you are seeking high-temperature and corrosion-resistant stainless steel tubes for high-temperature boiler systems and heat exchangers, we offer ASME SA213 TP347H seamless stainless steel boiler tubes, which are specifically engineered to withstand severe high-temperature and high-pressure working conditions. Capable of stable long-term operation at temperatures ranging from 600°C to 650°C, their elevated-temperature creep rupture strength far exceeds that of standard 304H stainless steel. This makes them the core high-temperature pressure-bearing tubing for supercritical (SC) and ultra-supercritical (USC) power plant boilers.
Our 347H stainless steel heat exchanger tubes are manufactured using extrusion or piercing processes (completely seamless), ensuring absolute uniformity in strength and eliminating any potential risks of weld-induced failure under high pressure. All tubes must undergo solution annealing at 1080°C to 100% relieve cold-working stress and reset the hardness to below 190 HV, fundamentally eliminating the risk of stress corrosion cracking (SCC) during heat exchanger operation. Furthermore, we strictly control the carbon content within the 0.04%–0.10% range and ensure the ASTM grain size is at 7 or coarser. This guarantees that the creep rupture strength is 15% higher than regular standards, allowing the tubes to safely handle continuous operating temperatures up to 815°C.
To ensure optimal fit-up and high-efficiency performance in shell-and-tube heat exchangers, the outer diameter (OD) tolerance of our steel tubes is strictly controlled within ±0.1 mm, with an inner surface roughness of Ra ≤ 0.8 μm. We also provide 347H U-bend tubes with localized stress-relief heat treatment, as well as seamless continuous coiled tubing up to 300 meters long, eliminating the need for orbital welding.
Specification
Country/Region: China
Product Name：ASTM A213 ASME SA-213 TP347H Stainless Steel Tubes
Specifications: 57mm*8mm; 60mm*9mm; 45mm*11mm, 51mm*12mm etc.
Port of Shipment：Tianjin,China
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package：Standard export package,suit for all kinds of transport, or as required
Chemistry Composition of ASTM A213 ASME SA-213 TP347H
| C, % | Si, % | Mn, % | P, % | S, % | Cr, % | Ni, % | Nb, % |
| 0.04-0.10 | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 17.0-19.0 | 9.0-13.0 | 8*C-1.1 |
Mechanical Properties of ASTM A213 ASME SA-213 TP347H
| In the Annealed Condition at -20°F to +100°F | |||||||||
| Tensile Strength | Tensile Strength | Yield Strength | Yield Strength | ||||||
| Alloy | UNS | Spec | MPa | ksi | MPa | ksi | Elongation in 2 inches (min.) % | Grain Size Req. | Harndess HBW |
| 347H | S34709 | ASME SA 213 | 515 | 75 | 205 | 30 | 35 | 7 or coarser | 192 |
| 347HFG | S34710 | - | 550 | 80 | 205 | 30 | 35 | 7 or coarser | 192 |
Requirements for heat treatment and grain size of sa-213 TP347H seamless steel tube
| Grade | Heat treatment | Solution treatment temperature,℃ | Cooling medium | ASTM grain size class number |
| SA-347H | solution treatment. | Cold working(1100℃) Hot working(1050℃) |
Water cooling or rapid cooling | 7 |
A213 TP 347h Stainless Steel Tubing Tolerances
The Stainless Steel 347H tubes outer diameter (OD) are according to ASTM A269/A213. Stainless Steel 347H Tubing Tolerance specifications are as per below:
| Stainless Steel 347H Tube OD | Stainless Steel 347H Tube Tolerance |
|---|---|
| 4mm to 35mm | +/- 0.08mm |
| 35mm to 38mm | +/- 0.15mm |
| 38mm to 60mm | +/- 0.20mm |
| 60mm and above | +/- 0.25mm |
Selection of Welding Materials for A213 TP347H
The material exhibits good weldability (welded joints can pass the intergranular corrosion test using Method L). For welding the same grade of steel, manual welding electrodes such as Ao-102, Ao-107, Ao-137, or E347-15 (US grade) are used, while argon arc welding filler wires such as ER-347 are employed. When welding dissimilar steels involving ferritic materials, filler wires or electrodes of the ERNiCr3 or ENiCrFe-3 grades specified by ASME standards are used.
Applications of ASME SA213 TP347H Seamless Tubes
Power Industry: High-temperature superheaters, high-temperature reheaters, high-temperature sections of platen superheaters, and steam piping for subcritical, supercritical, and ultra-supercritical units.
Other Sectors: Petrochemical heat exchangers; high-temperature equipment piping and fittings for the synthetic fiber and papermaking industries.
ASME SA 213 TP 347H Boiler Tube Price List
| Price of ASME SA 213 TP 347H Boiler Tube manufacturer in India | ASME SA 213 TP 347H Boiler Tube Price in USD |
|---|---|
| ASTM A213 TP347H Seamless tube | US $600-1200 |
| ASTM A213 TP 347H stainless steel seamless tube | US $3000-8000 |
| ASME SA213 TP347H boiler tube | US $2000.00-$3000.00 |
| A213 TP 347H Stainless Steel seamless pipe | US $6000-15000 |
If you have project requirements for ASTM A213 TP347h stainless steel seamless pipes, please click the button below to contact us immediately. We would be happy to assist you.
inspection
Prior to shipment, every ASTM A213 TP347H seamless pipe is manufactured in strict accordance with ASTM A213/ASME SA213 standards and undergoes comprehensive quality control. Each batch is subjected to 100% PMI (Positive Material Identification), chemical composition analysis, tensile and flattening tests, hardness testing, hydrostatic or non-destructive testing (eddy current or ultrasonic), as well as dimensional and visual inspections. A material test certificate compliant with EN 10204 3.1 is provided with the shipment, and third-party inspections by agencies such as SGS, BV, TUV, or Lloyd's Register can be arranged upon customer request.
High-quality sea freight packaging
TP 347H stainless steel seamless pipes and fittings are individually packaged in plastic bags, each item wrapped in waterproof material and secured with nylon rope. The packaging is clearly labeled for easy identification of quantity and product model. Strict protective measures are taken during handling and transportation.
FAQ
What is the difference between 347H and 347HFG?
The fundamental difference between ASME SA213 TP347H and TP347HFG lies in their grain size and the specific manufacturing processes used to achieve it. Although the chemical compositions of the two grades are virtually identical, TP347HFG is specially engineered with a refined microstructure to address specific high-temperature failure issues associated with the coarser grain structure of standard TP347H.
What is the difference between 347H and 321H?
The primary difference between 347H and 321H is their stabilizing element: 347H uses niobium (formerly columbium), while 321H uses titanium. The "H" designation in both denotes a higher carbon content (0.04% to 0.10%), which provides superior creep resistance and strength at elevated temperatures.
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