YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T |
| Delivery Time | 7 DAYS |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Product Name | Stainless Steel Seamless Tube |
| Standard | ASTM A213, ASME SA213 |
| Material | TP304H |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. |
| Thickness | BWG10-25 |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End |
| High Light | ASTM A213 TP304H Stainless Steel Seamless Tube, Heat Exchanger Tube |
| Brand Name | YUHONG |
| Model Number | ASTM A213 TP304H Stainless Steel Seamless Tube |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Delivery Time | 7 DAYS |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap | Product Name | Stainless Steel Seamless Tube |
| Standard | ASTM A213, ASME SA213 | Material | TP304H |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. | Thickness | BWG10-25 |
| Length | Single Random, Double Random & Cut Length | End | Plain End, Beveled End |
| High Light | ASTM A213 TP304H Stainless Steel Seamless Tube, Heat Exchanger Tube | Brand Name | YUHONG |
| Model Number | ASTM A213 TP304H Stainless Steel Seamless Tube | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM A213 stainless steel seamless tube ，ASME SA213 heat exchanger tube ，TP304H stainless steel tube | ||
ASTM A213 / ASME SA213 TP304H Stainless Steel Seamless Tube BA Heat Exchanger Tube
ASTM A213 TP304H is the high-temperature variant of the common 304 stainless steel, specifically manufactured as a seamless tube for critical, high-pressure, high-heat applications like power plant boilers and superheaters. Its controlled chemistry and processing make it the material of choice where long-term creep resistance is paramount. Compared to 304/304L, TP304H prioritizes elevated temperature performance over maximum corrosion resistance or weldability, making material selection crucial. Mandatory solution annealing and rigorous non-destructive testing (eddy current, ultrasonic) under the ASTM A213 standard guarantee its reliability in demanding thermal cycles.
Key Characteristics & Advantages of Stainless Steel 304H:
High-Temperature Strength: Excellent creep and stress rupture properties up to ~1500°F (~815°C).
Corrosion Resistance: Good general resistance to oxidation, scaling, and a wide range of corrosive media.
Excellent Formability & Weldability: Easy to fabricate and weld using standard techniques for austenitic stainless steels (though post-weld heat treatment may be required for high-temp service).
Smooth Seamless Interior: Ideal for fluid flow, reduces pressure drop, and prevents clogging.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
| 304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
ASTM A213 TP304H Stainless Steel Seamless Tube Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304 | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||
| 304L | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||
| 304H | min. | 0.04 | - | - | -0.045 | - | 18.0 | - | 8.0 | - |
| max. | 0.10 | 2.0 | 0.75 | 0.030 | 20.0 | 10.5 | ||||
ASTM A213 TP304H Stainless Steel Seamless Tube Mechanical Properties
| Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
ASTM A213 TP304H Stainless Steel Seamless Tube (annealed condition) Physical Properties
Grade |
Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Application
Superheater & Reheater Tubes in fossil-fuel power plants (primary application).
Boiler Tubes in high-pressure steam boilers.
Heat Exchanger Tubes in refinery and petrochemical processing.
Process Piping for high-temperature chemical processes.
Header Systems in power generation.
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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