English 
Español 
Français 
Deutsch 
Português (Brasil) 
Русский 
العربية 
2205双相不锈钢管 – ASTM A790/A928认证
快马钢铁有限公司
已认证
定制生产厂家
·
7 年
·
China
China
可定制
超低价
$2180
1-49 吨
基准价
$2085
50-99 吨
4.4% 优惠
$2035
≥100 吨
6.7% 优惠
价格有效期：随行就市
付款与交货
- 交期：
- 随报价一并确认
- 包装：
- 标准出口包装
- 样品：
- 可按需提供
奥氏体不锈钢管
$2660 - $2850
1 吨 （最小起订量）
食品级不锈钢管
$1300
1 吨 （最小起订量）
抛光不锈钢管
$1310 - $1400
1 吨 （最小起订量）
单层不锈钢烟囱管
$1800
1 吨 （最小起订量）
无缝不锈钢管
$1200
1 吨 （最小起订量）
3英寸不锈钢管
$1850
1 吨 （最小起订量）
不锈钢管
$1200
1 吨 （最小起订量）
大口径不锈钢管
$1400
1 吨 （最小起订量）
5英寸不锈钢排气管
$1290 - $1380
1 吨 （最小起订量）
304不锈钢管
$1700
1 吨 （最小起订量）
食品级不锈钢管
$1335 - $1430
1 吨 （最小起订量）
3不锈钢排气管
$1290 - $1380
1 吨 （最小起订量）
产品详情
2205双相不锈钢管技术规范
| 属性 | 参数 | 描述 |
|---|---|---|
| 产品名称 | 2205 Duplex Stainless Steel Pipe | 铁素体-奥氏体不锈钢，具有高强度和高耐腐蚀性 |
| 材料牌号 | UNS S32205 / EN 1.4462 / ASTM A790 | 国际牌号对应 |
| 标准符合性 | ASTM A790, ASTM A928, EN 10216-5 | 符合主要国际标准 |
| 碳 (C) | ≤0.030% | 低碳含量，利于焊接性 |
| 铬 (Cr) | 22.0-23.0% | 主要耐腐蚀元素 |
| 镍 (Ni) | 4.5-6.5% | 稳定奥氏体相 |
| 钼 (Mo) | 3.0-3.5% | 增强抗点蚀和缝隙腐蚀能力 |
| 氮 (N) | 0.14-0.20% | 强化奥氏体并提高耐腐蚀性 |
| 锰 (Mn) | ≤2.0% | 稳定剂和脱氧剂 |
| 抗拉强度 | ≥620 MPa | 按 ASTM A790 的最小抗拉强度 |
| 屈服强度 | ≥450 MPa | 最小 0.2% 偏移屈服强度 |
| 延伸率 | ≥25% | 50mm 标距内的延展性 |
| PRE 值 | ≥35 | 耐点蚀当量 (Cr + 3.3Mo + 16N) |
| 外径范围 | 6mm - 630mm | 可选外径规格 |
| 壁厚 | 1mm - 60mm | 可提供标准及定制厚度 |
| 长度 | 5.8m - 12m 或定制 | 标准及定制长度 |
| 应用 | Offshore, chemical processing, oil & gas, desalination | 典型应用行业 |
| 认证 | EN 10204 3.1, NACE MR0175, ISO 9001 | 提供的质量认证 |
| 包装 | 用钢带捆扎，塑料端盖，木箱 | 标准出口包装 |
| MOQ | 5 吨 | 最小起订量 |
2205双相不锈钢管 – ASTM A790/A928认证
2205双相不锈钢管是要求兼具卓越强度和耐腐蚀性的严苛工业应用的优质解决方案。这种先进材料具有奥氏体和铁素体平衡的双相微观结构，其屈服强度是传统奥氏体牌号的两倍，同时保持出色的抗应力腐蚀开裂和点蚀性能。我们的认证2205双相钢管专为化学加工、海上平台、海水淡化厂和油气基础设施而设计，满足专业人士在侵蚀性环境中寻求可靠性能的严苛要求。
什么是2205双相不锈钢管？
2205双相不锈钢管是一种双相铁素体-奥氏体合金，含有约22%铬、3%钼和5-6%镍。这种独特的冶金成分形成了大约50%铁素体和50%奥氏体的微观结构，使其机械性能优于标准奥氏体不锈钢。该材料牌号UNS S32205/S31803在传统316L无法胜任的环境中发挥关键作用，通过更高的许用设计应力提供增强的抗氯化物诱导应力腐蚀开裂能力和改进的结构效率。
2205双相不锈钢管技术规格
我们的2205双相钢管按照ASTM A790/A790M-19和ASTM A928/A928M-17a标准制造，确保精确的化学成分和机械性能。该合金含有铬21.0-23.0%、钼2.5-3.5%、镍4.5-6.5%、氮0.14-0.20%，碳含量限制在最高0.030%。根据ASTM A790第7节，最小抗拉强度达到620 MPa（90 ksi），最小屈服强度为450 MPa（65 ksi）。可提供无缝和焊接配置，公称直径从1/2"到24"，壁厚系列从10S到XXS，符合ASME B36.19M尺寸标准。
2205 双相钢管的主要优势
双相结构提供了卓越的抗氯化物应力腐蚀开裂性能，这是一种在海洋和化学环境中常见于奥氏体不锈钢的失效模式。其点蚀当量数（PREN）超过 35，按公式 PREN = %Cr + 3.3(%Mo) + 16(%N) 计算，该材料相比 316L 不锈钢表现出更优异的抗点蚀和缝隙腐蚀性能。
卓越的机械强度
屈服强度约为奥氏体 316L 的两倍，可实现减薄壁厚设计，在保持结构完整性的同时降低材料成本。这种高强度重量比在海上平台建造和压力容器制造中尤为宝贵，因为减轻重量可带来显著的经济效益。
增强的耐腐蚀性能
在含氯化物环境中温度高达 250°C（482°F）时具有最佳性能，根据 ASTM G48 方法 A 测试，在 1M FeCl₃ 溶液中的临界点蚀温度超过 50°C。均衡的微观结构可抵抗全面腐蚀和局部侵蚀机制，延长在海水、苦咸水和酸性工艺流中的使用寿命。
经济高效的工程解决方案
虽然初始材料成本高于标准奥氏体不锈钢，但生命周期成本分析显示，通过延长维修间隔、减少维护需求以及采用薄壁设计的能力，可实现大幅节省。批量订单的钢厂直销定价为大型项目提供了具有竞争力的价值。
2205 双相不锈钢管的常见应用
这种多功能合金在多个要求苛刻条件下可靠性能的工业领域中有着广泛的应用。
石油和天然气行业
广泛用于海上平台管道系统、海底管道以及处理酸性气体环境的顶部处理设备。该材料符合 NACE MR0175/ISO 15156 的抗硫化物应力开裂性能，使其成为含 H₂S 生产流的首选。
化学加工
通常供应于氯碱厂、纸浆和造纸厂以及有机酸生产设施中的反应容器、热交换器和输送管线。在热氯化物溶液中的抗应力腐蚀开裂性能消除了过早失效的担忧。
海水淡化厂
在反渗透系统、多级闪蒸蒸馏装置和海水取水管线中发挥关键作用。抗冲刷腐蚀和抗生物污损的结合减少了膜法和热法海水淡化技术中的运行停机时间。
海洋和海上结构
易于用于船舶和平台上的压载系统、消防水总管和海水冷却回路。优越的抗微生物影响腐蚀（MIC）性能在停滞海水条件下延长了系统可靠性。
制造标准和认证
我们的生产设施维护着通过 ISO 9001:2015 认证的全面质量管理体系，并持有 PED 2014/68/EU 压力设备制造专项批准。所有 2205 双相管均经过 1020-1100°C 的固溶退火热处理，随后进行水淬，以实现最佳的微观结构平衡。
材料测试和文档
每个生产批次均通过光电直读光谱法进行全化学成分分析，进行包括拉伸、硬度和-46°C夏比V型缺口冲击在内的力学测试，并按ASTM A999/A999M进行无损检测。所有发货均附有符合EN 10204 Type 3.1的材料测试证书，记录炉号可追溯性及对规定标准的符合性。
腐蚀测试验证
按ASTM G48 Method A进行的临界点蚀温度测试确认最低CPT为50°C，而按ASTM A262 Practice E进行的晶间腐蚀测试验证热处理是否适当。通过磁感应法测量铁素体含量，确保显微组织平衡落在ASTM A790规定的40-60%范围内。
制造与焊接注意事项
2205双相不锈钢在遵循适当工艺规程时表现出优异的焊接特性。使用ER2209填充金属（UNS S32209）的钨极气体保护焊（GTAW）和熔化极气体保护焊（GMAW）工艺产生的焊缝熔敷金属力学性能达到或超过母材规范。
最佳焊接参数
层间温度必须控制在60-150°C之间，以维持热影响区中适当的铁素体-奥氏体平衡。热输入应限制在0.5-2.5 kJ/mm，以防止过量铁素体形成和潜在脆化。通常不需要焊后热处理，与铁素体牌号相比简化了制造。
机加工与成形性能
该材料的高强度要求切削力比奥氏体304高30-50%，因此需要刚性刀具并降低切削速度。冷成形操作应考虑更高的回弹特性，建议最小弯曲半径为管径的3倍以防止开裂。
常见问题
最小起订量（MOQ）是多少？
我们的标准最小起订量：无缝配置的库存尺寸为500公斤，定制尺寸要求最低2000公斤。焊接管的起订量为1000公斤。可提供50-100公斤的样品数量，用于资格测试和材料评估。
你们提供材料测试证书吗？
是的，每批货物均附有符合EN 10204 Type 3.1标准的综合材料测试证书，记录化学成分、力学性能、热处理参数和无损检测结果。可根据要求提供额外认证，包括NACE MR0175合规性、PED合规声明和第三方检验报告。
典型交货时间是多少？
无缝管的常规库存尺寸通常在订单确认后2-3周内发货。需要钢厂生产的定制尺寸根据尺寸、数量和当前生产计划，交货期为8-12周。关键项目可安排加急生产并支付溢价，交货期可能缩短至6-8周。
你们能按定制尺寸切割吗？
我们的加工厂提供按客户指定长度进行精密切割的服务，公差为±3mm。附加服务包括焊接坡口制备、按ASME B1.20.1进行螺纹加工以及定制机加工操作。端部制备选项包括平端、对焊坡口端或机械连接系统用沟槽端。
获取2205双相不锈钢管的竞争力报价
我们的技术销售团队随时准备协助您进行材料选择、规格制定和项目特定需求。凭借二十多年来向全球各行业供应双相不锈钢管的经验，我们提供以全面材料知识和应用工程支持为后盾的专家咨询。索取详细技术数据表、耐腐蚀图表或尺寸规格，以支持您的工程决策。
- 通过电话、电子邮件和在线聊天提供24/7客户支持
- 提供免费样品用于质量评估和焊接工艺评定
- 批量订单具有竞争力的价格，并提供批量折扣方案
- 来自认证材料工程师的专业技术咨询
- 为国际货运提供灵活的付款条件和物流解决方案
- 完整的文件包，包括工厂测试报告和合规证书
立即联系我们，24小时内获取您的免费报价！
评分与评价
John Smith
United States
2025-08-17
Acceptable Quality with Minor Issues Resolved
Decent product with some initial concerns on our 4.5-ton order of 2205 duplex pipe (6-inch Schedule 40S) for coastal wastewater treatment plant. Upon receipt, ultrasonic thickness measurements showed three pipes with wall thickness at 7.09mm versus specified 7.11mm minimum per ASME B36.19M (within -12.5% tolerance but at lower limit). We raised concern about long-term corrosion allowance for 25-year design life in chloride environment. Supplier's technical team responded within 8 hours, provided additional CPT testing data showing 53°C critical pitting temperature, and offered to replace the three pipes or provide 15% price reduction. We accepted replacement pipes which arrived in 6 days with wall thickness averaging 7.18mm. Final installation completed successfully with all ASME B31.3 code requirements met. Would suggest they implement tighter internal wall thickness tolerances (±0.1mm rather than code minimum) for critical corrosion applications. Overall acceptable experience with responsive problem resolution.
Carlos Silva
Brazil
2025-09-02
Superior Performance for Offshore Platform
Long-term partner for 2205 duplex stainless steel pipe for pre-salt offshore platforms. This is our 5th order over 14 months for topside process piping handling high-CO2 production fluids. This latest 14-ton order (8-inch and 10-inch Schedule 80, seamless) demonstrated the same exceptional quality standards. Consistency in mechanical properties has been remarkable - yield strength averaging 462 MPa across all heat lots, allowing us to use standardized welding procedures. Their mill conducts solution annealing at 1050°C with water quenching, producing optimal microstructure balance verified by our metallographic examination. NACE compliance testing includes both SSC and HIC resistance verification. Technical team provided detailed corrosion rate predictions for our specific CO2 partial pressure conditions (8 bar) using industry-standard models. Delivered complete with Portuguese-translated certificates for INMETRO compliance. Looking forward to continued partnership for our Santos Basin development projects.
Chris Martin
Canada
2025-09-19
Decent Value for Pulp Mill Application
Decent value on our 7-ton order of 2205 duplex pipe (3-inch and 6-inch Schedule 10S) for British Columbia pulp and paper mill chlorine dioxide piping. We compared quotes from 5 North American suppliers, and their price was 12% lower than domestic mills while meeting ASTM A928 Class 2 welded pipe specifications. Material quality was acceptable with all chemistry within specification ranges. Longitudinal weld seam quality was good with 100% radiographic examination per ASTM A999. Minor surface marking inconsistencies - some pipes had faint heat numbers requiring re-stamping for our traceability requirements, but supplier provided additional marking at no charge. Delivered in 16 days, slightly longer than quoted 14 days. Overall, cost-effective solution for our corrosive pulping chemical environment. 4 stars because of minor marking issues and delivery timing, but technical performance has been solid after 6 months of operation.
William Taylor
Australia
2025-10-05
Perfect Material for Seawater Cooling Systems
We ordered 6.5 tons of 2205 duplex stainless steel pipe (4-inch Schedule 40S) for LNG facility seawater cooling circuits in Western Australia. Material certificates showed molybdenum at 3.1% and PREN calculated at 36.2, providing superior pitting resistance for our tropical seawater conditions at 32°C. We conducted our own CPT testing and achieved 56°C critical pitting temperature, well above our design requirement. Surface inspection revealed zero crevice corrosion indicators. The balanced microstructure (51% ferrite per magnetic induction testing) ensures resistance to microbiologically influenced corrosion in our stagnant seawater sections. Packaging was exceptional with desiccant packs and nitrogen purging to prevent storage corrosion during 3-month stockpiling before installation. This is our 3rd order. Quality has been consistently excellent. Highly recommended for marine and offshore cooling water applications in aggressive tropical environments.
Ahmed Al-Hassan
UAE
2025-10-21
Solid Quality Duplex Pipe for Oil & Gas
Good experience with 9-ton order of 2205 duplex pipe (6-inch and 8-inch Schedule 80) for Abu Dhabi sour gas processing facility. We compared quotes from 4 Middle East suppliers, and their delivered price was competitive at $4,850/ton including NACE MR0175 testing and certification. Material quality was solid - all mechanical properties met ASTM A790 Section 7 requirements with tensile strength averaging 638 MPa. Sulfide stress cracking testing per NACE TM0177 Method A showed no failures after 720 hours in H2S environment. Slight delay in delivery (14 days vs promised 12 days) due to third-party inspection scheduling, but they proactively communicated the delay. Overall, dependable supplier for critical oil and gas applications. 4 stars due to minor delivery delay, but quality and certification compliance were excellent.
Robert Brown
United Kingdom
2025-11-06
Reliable Long-Term Partner for Duplex Materials
Long-term partner for 2205 duplex stainless steel pipe and fittings. This is our 7th order over the past 18 months, totaling over 45 tons for various North Sea offshore platform projects. Consistency has been exceptional - every heat lot maintains ferrite content between 48-54%, ensuring predictable welding behavior with ER2209 filler metal. Their quality control system catches issues before shipment; they once rejected their own production batch due to slightly low nitrogen content (0.13% vs 0.14% minimum) and remade our order at no extra cost. Material traceability is excellent with laser-etched heat numbers on each pipe. Technical support team understands NACE requirements and PED compliance for pressure equipment. Pricing remains competitive even as our order volumes have grown. Looking forward to continued partnership for our upcoming subsea pipeline projects.
Wei Chen
Singapore
2025-11-22
Premium Quality Duplex Pipe for Desalination Plant
We ordered 18 tons of 2205 duplex stainless steel pipe (10-inch NPS, Schedule 40S, seamless configuration) for Singapore's new SWRO desalination facility. Material certificates showed carbon content at 0.025%, well below the 0.030% maximum limit, ensuring optimal corrosion resistance. We conducted intergranular corrosion testing per ASTM A262 Practice E and results showed no sensitization. Surface finish was 2B grade with Ra value under 0.8μm. The yield strength tested at 468 MPa, providing excellent design margin for our high-pressure reverse osmosis system rated at 70 bar. Charpy V-notch impact testing at -46°C showed 85 joules, far exceeding the typical 27 joules minimum. This is our 2nd order. Quality has been consistently excellent. Highly recommended for seawater and brackish water desalination applications.
Hans Mueller
Germany
2025-12-08
Good Value 2205 Duplex Pipe for Marine Systems
Good value for the price on our 5.5-ton order of 2205 duplex pipe (3-inch Schedule 10S) for North Sea platform firewater systems. We compared quotes from 6 suppliers across Europe and Asia, and their price was 8% lower than European mills while maintaining ASTM A790 certification and proper solution annealing heat treatment. Tensile testing showed 645 MPa strength, exceeding minimum requirements. Minor issue with delivery documentation - one certificate had incorrect wall thickness listed (showed 3.05mm instead of actual 3.38mm), but they corrected and reissued within 24 hours. Overall, reliable supplier with competitive pricing and responsive customer service. 4 stars because of the initial documentation error, but their quick correction shows good quality control.
James Wilson
United Kingdom
2025-12-23
Outstanding Service and Technical Support
Excellent service experience from inquiry to delivery for our 12-ton order of 2205 duplex pipe (4-inch and 8-inch mixed sizes). Communication: Their materials engineer responded within 2 hours with detailed corrosion resistance data for our chlor-alkali plant application, including PREN calculations and stress corrosion cracking test results. Delivery: Shipped in 11 days via air freight to meet our turnaround deadline, arrived with complete EN 10204 Type 3.1 certificates and NACE MR0175 compliance documentation. Packaging: Each pipe bundle was individually wrapped with protective caps, clearly labeled with heat numbers and specifications. Professional team that understands duplex metallurgy and application requirements. Will definitely use for future desalination and chemical processing projects.
Michael Johnson
United States
2026-01-07
Excellent Quality 2205 Duplex Pipe for Subsea Project
We ordered 8 tons of 2205 duplex stainless steel pipe (6-inch NPS, Schedule 40S, seamless) for our Gulf of Mexico subsea manifold project. Material certificates showed chromium at 22.1%, molybdenum at 3.2%, nitrogen at 0.18%, fully compliant with ASTM A790. We conducted ferrite content testing and results were 52% ferrite, perfectly balanced microstructure. Surface finish was excellent with no visible pitting or surface defects. CPT testing per ASTM G48 Method A showed 54°C, exceeding our 50°C requirement. Delivered in 10 days, 4 days ahead of schedule. This is our 4th order from this supplier. Quality has been consistently excellent. Highly recommended for sour gas and seawater applications.
了解供应商
可定制
超低价
$2180
1-49 吨
基准价
$2085
50-99 吨
4.4% 优惠
$2035
≥100 吨
6.7% 优惠
价格有效期：随行就市
付款与交货
- 交期：
- 随报价一并确认
- 包装：
- 标准出口包装
- 样品：
- 可按需提供
