YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C, T/T |
| Supply Ability | 10000 Tons/Month |
| Delivery Time | 5 - 60 Days |
| Packaging Details | Ply-Wooden Case & Woven Bag |
| Material | S31803 |
| Standard | ASME SA789 |
| Ends | PE , BE |
| Testing | HT , ET |
| Size | 1/2 inch - 98 inch |
| Application | Heat Exchanger |
| Brand Name | YUHONG |
| Model Number | Seamless Tube |
| Certification | ABS, DNV-GL, LR, BV, CCS, KR, ASME, TUV, SGS, BV, IEI, IBR, ISO9001, ISO 14001, ISO 18001 |
| Place of Origin | China , Korea |
View Detail Information
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 10000 Tons/Month |
| Delivery Time | 5 - 60 Days | Packaging Details | Ply-Wooden Case & Woven Bag |
| Material | S31803 | Standard | ASME SA789 |
| Ends | PE , BE | Testing | HT , ET |
| Size | 1/2 inch - 98 inch | Application | Heat Exchanger |
| Brand Name | YUHONG | Model Number | Seamless Tube |
| Certification | ABS, DNV-GL, LR, BV, CCS, KR, ASME, TUV, SGS, BV, IEI, IBR, ISO9001, ISO 14001, ISO 18001 | Place of Origin | China , Korea |
| High Light | ASME SA789 Stainless Steel Heat Exchanger Tube ，S31803 Stainless Steel Heat Exchanger Tube ，finned pipe heat exchanger 620MPa | ||
ASME SA789 S31803 Duplex Stainless Steel Heat Exchanger Tube
Grade S31803 is a duplex stainless steel, it has a mixed microstructure of austenite and ferrite phases, typically in a 50/50 ratio. This combination provides enhanced strength and resistance to stress corrosion cracking compared to standard austenitic stainless steels. S31803 is known for its excellent performance in highly corrosive environments, particularly those containing chlorides and other aggressive chemicals.
Chemical Composition:
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | N | Fe |
| S31803 | ≤ 0.03% | ≤ 2.00% | ≤ 1.00% | ≤ 0.03% | ≤ 0.02% | 21.00-23.00% | 4.50-6.50% | 2.50-3.50% | 0.08-0.20% | Balance |
Mechanical Properties:
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness |
| S31803 | Minimum 620 MPa (90,000 psi) | Minimum 450 MPa (65,000 psi) | 25% minimum in 50 mm | ≤ 290 HB (Brinell Hardness) |
Key Features:
Applications:
1. Chemical Processing Industry
2. Oil and Gas Industry
3. Marine Applications
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Active Member
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. The factories ... 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. The factories ...
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