YUHONG HOLDING GROUP CO., LTD
| Application | High Temp & Corrosion Resistance, Dust-laden Industrial Workshop |
| Keyword | hot dipped galvanized square tube,Structural Hollow Section / RHS /SHS,black steel pipes/black tubing,Studded Tube,Alloy seamless steel tubes |
| Standard | BS,ASTM,JIS,DIN,GB |
| Thickness | 4 - 20 mm,0.5-25mm,0.5 - 25 mm,1.8-5.0,1 - 200 mm |
| Outer diameter(round) | 60 - 219 mm,1 - 1220 mm,6 - 920 mm,0.5 - 8 inch,2 - 30 mm |
| Material | Austenitic Stainless Steel |
| Grade | ASTM A312 TP304H |
| Technique | Hot Rolled,ERW,Cold Drawn,Dipped,Cold Rolled |
| Surface treatment | Galvanized,welded pin,Copper Coated,Black |
| Payment Terms | L/C,T/T |
| Supply Ability | 10000 tons/month |
| Packaging Details | Ply-wooden Case With Iron Frame |
| Brand Name | YUHONG |
| Model Number | Serrated Fin Pipe |
| Certification | ABS, BV, DNV, CCS, LR |
| Place of Origin | CHINA |
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Product Specification
| Application | High Temp & Corrosion Resistance, Dust-laden Industrial Workshop | Keyword | hot dipped galvanized square tube,Structural Hollow Section / RHS /SHS,black steel pipes/black tubing,Studded Tube,Alloy seamless steel tubes |
| Standard | BS,ASTM,JIS,DIN,GB | Thickness | 4 - 20 mm,0.5-25mm,0.5 - 25 mm,1.8-5.0,1 - 200 mm |
| Outer diameter(round) | 60 - 219 mm,1 - 1220 mm,6 - 920 mm,0.5 - 8 inch,2 - 30 mm | Material | Austenitic Stainless Steel |
| Grade | ASTM A312 TP304H | Technique | Hot Rolled,ERW,Cold Drawn,Dipped,Cold Rolled |
| Surface treatment | Galvanized,welded pin,Copper Coated,Black | Payment Terms | L/C,T/T |
| Supply Ability | 10000 tons/month | Packaging Details | Ply-wooden Case With Iron Frame |
| Brand Name | YUHONG | Model Number | Serrated Fin Pipe |
| Certification | ABS, BV, DNV, CCS, LR | Place of Origin | CHINA |
| High Light | High Temperature Resistance Serrated Fin Tube ，Corrosion Resistance Studded Tube ，Enhanced Turbulence Disturbance Finned Tube | ||
ASTM A312 TP304H serrated finned tubes are engineered for high-temperature heat exchange systems in industrial dust-laden environments. These pipes excel in applications including waste heat recovery, warm air heating, and air preheating across metallurgy, casting, chemical engineering, building materials, and mining industries. They effectively address the combined challenges of high temperature, heavy dust accumulation, and corrosion while significantly improving energy utilization efficiency, reducing operational costs, and supporting sustainable production practices.
High Operating Temperature: TP304H is a high-temperature grade austenitic stainless steel with carbon content (0.04-0.10%) that enables stable operation up to 650°C, making it ideal for metallurgy, casting, and sintering applications with high-temperature flue gas or hot air.
Enhanced Creep Resistance: Superior to standard TP304, TP304H minimizes plastic deformation and stress relaxation under high-temperature pressure conditions, ensuring long-term equipment safety and reliability.
Chemical Corrosion Resistance: With chromium content exceeding 18% and nickel content between 8-11%, these tubes resist common weak acidic/alkaline gases (SO₂, NH₃), moisture, and salt spray typically found in industrial workshop environments.
Strong Oxidation Resistance: Forms a dense chromium oxide surface film in high-temperature air environments, preventing continuous oxidation and surface degradation.
Superior Pitting and Crevice Corrosion Resistance: Outperforms carbon steel in high-humidity environments with frequent condensation, common in dust-laden workshops.
Enhanced Turbulence Disturbance: Serrated edges disrupt air boundary layers, increasing convective heat transfer coefficients by 15-25% compared to straight fins, maintaining effective heat transfer even at low wind speeds for natural convection or low-speed fan systems.
Reduced Ash Accumulation and Clogging: Irregular airflow paths created by the serrated structure prevent uniform dust buildup, with loose dust being partially cleared by airflow impact for natural self-cleaning functionality.
Superior Contamination Resistance: Compared to spiral fins, serrated fins are less susceptible to tangling with fibrous impurities and other contaminants.
| C | Si | Mn | P | S | Ni | Cr |
| 0.04~0.10% | ≤1.0% | ≤2.0% | ≤0.040% | ≤0.030% | 8.0~11.00% | 18.00~20.00% |
Note: TP304H is a heat-resistant modification of standard 304 stainless steel. The primary distinction from standard grade TP304 lies in its carbon content range (0.04–0.10%). This elevated carbon content enhances the material's strength and durability in high-temperature environments, making it particularly suitable for high-temperature applications per ASTM A312 specifications.
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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