شرکت Yuhong Holding Group Co. LTD
| محل منبع: | چین |
| نام تجاری: | YUHONG |
| گواهی: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| شماره مدل: | ASTM A790 S31803 |
| مقدار حداقل تعداد سفارش: | 100 کیلوگرم |
|---|---|
| قیمت: | قابل مذاکره |
| جزئیات بسته بندی: | قاب چوبی / قاب آهنی / بسته با کلاه پلاستیکی / قاب بافته شده |
| زمان تحویل: | بستگی به کمیت دارد |
| شرایط پرداخت: | L/C ، T/T |
| قابلیت ارائه: | 1000 تن در ماه |
| استاندارد مواد: | ASTM A790 / ASME SA790 | شماره UNS: | S31803 |
|---|---|---|---|
| نمره معادل: | EN 1.4462 | UNS S32205 | دوبلکس 2205 | نوع لوله: | یکپارچه | جوش داده شده |
| سطح صدور گواهینامه: | EN 10204 3.1 | 3.2 | نروسک | پایان پایان: | برش ساده | Beveled (30-35 درجه) | Threaded (NPT/BSP) |
| برجسته کردن: | ASTM A790 duplex stainless steel pipes,EN 10204 3.2 certified S31803 pipes,UNS S31803 seamless stainless pipes,EN 10204 3.2 certified S31803 pipes,UNS S31803 seamless stainless pipes |
||
ASTM A790 S31803 Duplex Stainless Steel Pipe | UNS S31803 | High Strength Corrosion Resistant Pipes
Meta Description:
Manufacturer of ASTM A790 S31803/2205 duplex steel pipes. Certified EN 10204 3.1, 100% hydro tested, PREN >38. Ideal for offshore, chemical & oil/gas. Request specs.
Our ASTM A790 seamless duplex pipes (UNS S31803) combine austenitic and ferritic microstructures, delivering 2x the yield strength of 316L stainless steel with exceptional chloride stress corrosion cracking (SCC) resistance. Ideal for high-pressure, corrosive environments.
Key Advantages:
Table: Balanced Chemistry of S31803 Duplex Steel Pipe
| Element | Min | Max | Target | Role in Performance |
|---|---|---|---|---|
| Cr | 21.0 | 23.0 | 22.0 | Pitting/Corrosion Resistance |
| Ni | 4.5 | 6.5 | 5.5 | Austenite Stability |
| Mo | 2.5 | 3.5 | 3.0 | Chloride Resistance |
| N | 0.08 | 0.20 | 0.15 | Strength & PRE Boost |
| Mn | - | 2.0 | 1.2 | Deoxidation |
| C | - | 0.030 | 0.02 | Weldability |
| S | - | 0.020 | 0.001 | Machinability |
| P | - | 0.030 | 0.025 | - |
| Fe | Balance |
Table: Cross-Standard Material Equivalents
| Standard | Grade | Common Name | Similarity |
|---|---|---|---|
| UNS | S31803 | Duplex 2205 | Identical |
| EN | 1.4462 | X2CrNiMoN22-5-3 | Direct Equivalent |
| ASME | SA790 | - | Parent Spec |
| GOST | 03Kh22N6M2 | - | Comparable |
| JIS | SUS 329J3L | - | Near Match |
Table: Room-Temperature Mechanical Properties per ASTM A790
| Property | Requirement | Typical Value | Advantage vs. 316L |
|---|---|---|---|
| Tensile Strength | ≥ 620 MPa | 750-895 MPa | +40% Higher |
| Yield Strength (0.2%) | ≥ 450 MPa | 550-625 MPa | 2x Higher |
| Elongation (%) | ≥ 25% | 28-35% | Superior Ductility |
| Hardness (Rockwell C) | ≤ 32 HRC | 28-32 HRC | Optimal for Sour Service |
| Impact Toughness | ≥ 100 J (-50°C) | ≥140 J | Arctic Readiness |
Table: Permissible Variations per ASTM A790/ASME B36.19
| Parameter | Tolerance (Seamless Pipe) | Critical Application Focus |
|---|---|---|
| OD (Outer Diameter) | ±0.8% or ±0.2mm* | Fitting Compatibility |
| Wall Thickness | +20% / -12.5% | Pressure Integrity |
| Straightness | ≤ 0.2% of length | Offshore Installation |
| Cut Length | +3mm / -0mm | Welding Efficiency |
Corrosion-Demanding Environments:
تماس با شخص: Freya
تلفن: +8617276485535
فکس: 0086-574-88017980