Yuhong Group Co.,Ltd
| Payment Terms | T/T,L/C,Western Union |
| Supply Ability | 1500 tons per month |
| Delivery Time | 30 days |
| Packaging Details | Ply-wooden Case Or Iron Case |
| Yield Strength | 450-550 Mpa |
| Material | S31803, S32205, S32750, S32760, S31254 |
| Hardness | 20-32 HRC |
| Tensile Strength | 620-800 Mpa |
| Thickness | 0.71, 0.89, 1.65, 2.11, 2.77, 3.4 mm |
| Elongation | 15-30% |
| Brand Name | YUHONG |
| Model Number | ASTM A789 / ASTM A790 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015, IEI |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,L/C,Western Union | Supply Ability | 1500 tons per month |
| Delivery Time | 30 days | Packaging Details | Ply-wooden Case Or Iron Case |
| Yield Strength | 450-550 Mpa | Material | S31803, S32205, S32750, S32760, S31254 |
| Hardness | 20-32 HRC | Tensile Strength | 620-800 Mpa |
| Thickness | 0.71, 0.89, 1.65, 2.11, 2.77, 3.4 mm | Elongation | 15-30% |
| Brand Name | YUHONG | Model Number | ASTM A789 / ASTM A790 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015, IEI | Place of Origin | China |
| High Light | duplex steel pipes ，welded steel pipe | ||
Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205, UNS S32750(1.4410), UNS S31500(Cr18NiMo3Si2), UNS32760(1.4501)
| Grade | C max | Si max | Mn max | P max | S max | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
|---|---|---|---|---|
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
Corrosion Test |
Conducted only when specially requested by the client |
Chemical Analysis |
Test done as per required quality standards |
Destructive / Mechanical Testing |
Tensile | Hardness | Flattening | Flare | Flange |
Reverse-bend and Re. flat tests |
Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end |
Eddy Current Testing |
Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System |
Hydrostatic Testing |
100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s . |
Air Under Pressure Test |
To check any evidence of air leakage |
Visual Inspection |
After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
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Duplex Stainless Steel have a structure that contains both ferrite and austenite. Duplex alloys have higher strength and better stress corrosion cracking resistance than most austenitic alloys and greater toughness than ferritic alloys, especially at low temperatures. The corrosion resistance of duplex alloys depends primarily on their composition, especially the amount of chromium, molybdenum, and nitrogen they contain.
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Material Grade: Chemical Composition
Mechanical Property:
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Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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