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316L不锈钢管 - 耐腐蚀焊接与无缝管
快马钢铁有限公司
已认证
定制生产厂家
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7 年
·
China
China
可定制
超低价
$3765
1-49 吨
基准价
$3600
50-99 吨
4.4% 优惠
$3515
≥100 吨
6.6% 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
不锈钢烟囱管
$1170
1 吨 （最小起订量）
切割不锈钢管
$1760
1 吨 （最小起订量）
3/4英寸不锈钢管
$1730 - $1850
1 吨 （最小起订量）
12英寸直径不锈钢管
$1730 - $1850
1 吨 （最小起订量）
316不锈钢管
$954
1 吨 （最小起订量）
3/4英寸不锈钢管
$2500
1 吨 （最小起订量）
10英寸直径不锈钢管
$2660 - $2850
1 吨 （最小起订量）
6不锈钢管
$2500
1 吨 （最小起订量）
食品级不锈钢管
$1300
1 吨 （最小起订量）
201不锈钢管
$1850
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）
2英寸316不锈钢管
$2475 - $2650
1 吨 （最小起订量）
产品详情
316L不锈钢管技术规格
| 性能 | 参数 | 说明 |
|---|---|---|
| 产品名称 | 316L Stainless Steel Pipe | 具有优异耐腐蚀性的低碳奥氏体不锈钢管 |
| 材料牌号 | 316L / EN 1.4404 / UNS S31603 / JIS SUS316L | 国际牌号对应 |
| 标准符合性 | ASTM A312, ASTM A269, EN 10217-7, JIS G3459 | 符合主要国际管道标准 |
| 碳含量 (C) | ≤0.03% | 超低碳，提高焊接性和耐腐蚀性 |
| 铬 (Cr) | 16.0-18.0% | 提供优异的耐腐蚀性 |
| 镍 (Ni) | 10.0-14.0% | 提高延展性和奥氏体稳定性 |
| 钼 (Mo) | 2.0-3.0% | 提高抗点蚀和缝隙腐蚀性能 |
| 锰 (Mn) | ≤2.0% | 改善热加工性能 |
| 硅 (Si) | ≤1.0% | 脱氧剂和强化剂 |
| 抗拉强度 | ≥515 MPa | 按 ASTM A312 的最低抗拉强度 |
| 屈服强度 | ≥205 MPa | 0.2% 偏移量下的最低屈服强度 |
| 延伸率 | ≥35% | 50mm 标距内的延展性 |
| 硬度 | ≤217 HBW / ≤95 HRB | 最大硬度值 |
| 外径范围 | 6mm - 914mm | 可选外径规格 |
| 壁厚 | 0.5mm - 50mm | 标准及定制壁厚 |
| 长度 | 5.8m - 12m 或定制 | 标准及定尺切割选项 |
| 制造工艺 | Seamless / Welded (TIG/ERW) | 热轧或冷拔无缝、焊接并退火 |
| 表面处理 | 酸洗、退火、抛光、光亮退火 | 多种表面处理选项 |
| PRE 值 | ≥24 | 用于腐蚀评估的耐点蚀当量 |
| 应用 | 化工、海洋、制药、食品加工、石油和天然气 | 典型工业应用 |
| 温度范围 | -196°C 至 925°C | 使用温度范围 |
| 耐腐蚀性 | 在氯化物环境中表现优异 | 卓越的抗点蚀和缝隙腐蚀性能 |
| 可焊性 | 优异 | 无需焊后热处理 |
| 认证 | EN 10204 3.1/3.2、ISO 9001、PED、NACE MR0175 | 提供质量认证和材料测试报告 |
| 包装 | 钢带捆扎、塑料端盖、木箱 | 标准出口海运包装 |
| 最小起订量 | 500 kg | 最低订购量 |
316L不锈钢管 - 耐腐蚀焊接与无缝管
316L不锈钢管代表了一种优质奥氏体铬镍钼合金管材解决方案，专为要求卓越耐腐蚀性和优异焊接性的环境而设计。其碳含量降低至最高0.03%，该材料在化学加工、海洋应用、制药制造和食品级装置中发挥着关键作用，在这些领域中防止污染和延长使用寿命至关重要。我们的钢厂直供316L管材符合严格的国际规范，同时为寻求可靠耐腐蚀管道系统的工业买家提供具有成本效益的性能。
什么是316L不锈钢管？
316L不锈钢管是标准316合金的超低碳变体，含有钼（2.0-3.0%），以增强对氯化物引起的点蚀和缝隙腐蚀的抵抗力。“L”标识表示根据ASTM A312/A312M规范，碳含量限制在最高0.03%，这消除了焊接操作过程中碳化铬的析出。这种奥氏体材料保持面心立方晶体结构，在从低温到870°C（1598°F）间歇使用条件的温度范围内提供优异的延展性和成形性。
316L不锈钢管技术规格
我们的316L无缝管和焊接管符合ASTM A312/A312M-2021对无缝、焊接和重度冷加工配置的要求。化学成分包括铬16.0-18.0%、镍10.0-14.0%、钼2.0-3.0%，锰≤2.0%、硅≤0.75%、磷≤0.045%、硫≤0.030%。机械性能提供最小抗拉强度485 MPa（70 ksi）、屈服强度170 MPa（25 ksi），以及50mm标距长度下40%的伸长率。可用尺寸范围从6mm到914mm外径，壁厚符合ASME B36.19M的Schedule 5S至XXS。
316L管道的耐腐蚀性能
与传统的304牌号相比，316L不锈钢管中的钼含量使其在氯化物环境中具有更优异的耐腐蚀性，其点蚀当量数（PREN）约为24-26。该合金在海洋大气、微咸水系统以及含有中等浓度和温度的硫酸、磷酸和乙酸的化学加工流中表现出卓越的耐久性。超低碳规格可防止在425-815°C热暴露期间发生敏化，按照ASTM A262 Practice E测试方案保持耐晶间腐蚀性能。
焊接特性与制造指南
316L不锈钢管表现出优异的焊接特性，大多数应用无需焊后热处理，使其成为复杂制造项目的首选。兼容的焊接工艺包括钨极气体保护焊（GTAW/TIG）、熔化极气体保护焊（GMAW/MIG）和焊条电弧焊（SMAW），使用符合AWS A5.9规范的ER316L填充材料。层间温度不应超过150°C以保持耐腐蚀性，同时氩气或氩氦保护气体可防止熔合过程中的氧化。降低的碳含量消除了碳化物析出风险，确保焊缝区域保持母材的耐腐蚀性能。
工业应用与服务环境
316L不锈钢管广泛应用于制药洁净室分配系统、食品饮料加工设备、船舶排气系统以及处理腐蚀性介质的化学品输送管线。该材料用于海上油气平台的海水冷却系统、海水淡化厂的盐水处理，以及纸浆造纸厂的漂白化学品输送。建筑应用包括沿海建筑幕墙、扶手系统和水景设施，这些场合尽管暴露于氯化物环境，仍须保持美观外观。发电设施中的热交换器、冷凝器和蒸发器采用316L管材，以实现优异的抗热循环性能和最低的维护要求。
质量认证与测试标准
我们的316L不锈钢管生产遵循ISO 9001:2015质量管理体系，并具备从钢厂认证开始的完整材料可追溯性。每个生产批次均通过符合ASTM E415的光学发射光谱法进行化学成分验证，符合ASTM A370的力学性能测试，以及无损检测，包括针对无缝产品的符合ASTM A999的超声波检测和针对焊接结构的符合ASTM E1742的射线检验。符合EN 10204 Type 3.1的材料测试证书（MTC）记录了化学分析、拉伸性能、硬度值和晶间腐蚀抗力测试结果。可提供的附加认证包括针对酸性服役环境的NACE MR0175/ISO 15156和ASME B31.3压力管道规范符合性文件。
常见问题
最小起订量（MOQ）是多少？
我们316L不锈钢管的标准最小起订量为每种规格500公斤，不过对于原型项目或样品需求，我们也可以承接更小的数量。订购5公吨以上的批量买家可享受优惠的钢厂直供价格，并享有灵活的交付时间安排。
你们提供材质证明书吗？
是的，每批货物均随附符合EN 10204 Type 3.1标准的综合材质证明书（MTC），记录炉号可追溯性、化学成分分析、力学性能测试结果，以及对指定ASTM、ASME或EN标准的符合性。可根据要求安排第三方检验服务。
典型的交货时间是多久？
标准库存规格自我们的配送中心起3-5个工作日内发货。需要钢厂生产的定制尺寸通常根据规格复杂程度和当前生产排期在4-6周内交付。紧急项目需求可提供加急处理，并安排优质货运。
你们可以按定制尺寸切割吗？
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±1.5mm，可按ASME B16.25标准进行焊接坡口加工，并按ASME B1.20.1标准进行螺纹加工。其他增值服务包括静水压试验、按ASTM A380标准进行钝化处理，以及为运输提供保护性端帽。
获取316L不锈钢管的竞争力报价
与我们技术销售团队合作，获取具有工厂竞争力的316L不锈钢管价格，依托数十年的冶金专业经验和供应链可靠性。我们提供全面的材料选型咨询、应用工程支持和物流协调，确保您的项目规格按时、按预算达成。
- 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，并加快发货
- 批量订单具有竞争力的价格，并提供批量折扣结构
- 关于材料选择和制造方法的专业技术咨询
立即联系我们，24小时内获取免费报价！
评分与评价
John Smith
United States
2025-07-11
Acceptable Quality with Minor Issues Resolved
Decent product, some issues resolved satisfactorily. Ordered 5 tons of 316L welded pipe (114.3mm OD, Schedule 10, ASTM A312) for our oil refinery cooling water project. Initial shipment had documentation discrepancy - heat numbers on pipe stenciling didn't match MTC for two bundles (about 800kg). This created concern during our receiving inspection and delayed installation by 5 days. Contacted supplier immediately and they conducted investigation within 48 hours. Turned out to be stenciling error at their warehouse - correct material but wrong marking. They provided corrected certificates, third-party verification, and offered 8% discount on current order plus free expedited shipping on our next purchase. Material quality itself was fine - passed our PMI testing and dimensional checks. Welds were sound per our radiographic spot checks. Suggest implementing better quality control on stenciling and documentation matching before shipment. With improved processes, this supplier could easily be 5-star. Fair pricing and responsive customer service when issues arose.
Chris Martin
Canada
2025-07-21
Superior 316L Seamless Tubing for Pulp Mill
Outstanding quality 316L seamless tubing for our pulp and paper mill bleaching chemical distribution system. Ordered 9 tons of various sizes (33.4mm to 88.9mm OD, Schedule 40S) for chlorine dioxide and sodium hypochlorite service. Material certificates documented molybdenum content at 2.7%, providing excellent pitting resistance (PREN of 25.8). We conducted our own chemical composition verification via OES per ASTM E415 - results matched certificates within 0.1% for all elements. Mechanical properties exceeded minimums with tensile strength averaging 540 MPa and yield at 285 MPa. Tubes passed our 100% ultrasonic inspection per ASTM A999 with no reportable indications. Supplier provided comprehensive corrosion data for our specific chemical concentrations and temperature ranges. Delivered in 13 days to British Columbia with excellent export documentation. This material has been in service for 4 months with zero corrosion issues. Highly recommended for aggressive chemical environments.
Carlos Silva
Brazil
2025-08-05
Good Value 316L Pipes for Food Processing
Good value for our food processing equipment manufacturer needs. We compared quotes from 4 suppliers in Brazil, USA, and China, and their price was 18% lower than domestic options while maintaining sanitary-grade quality. Ordered 6 tons of 316L welded pipe (48.3mm and 60.3mm OD, electropolished finish Ra ≤0.8μm) for dairy processing skid systems. Pipes met our hygiene requirements and passed our cleanability validation tests. Surface finish was uniform with no crevices for bacterial growth. Small issue with shipping - two bundles arrived with minor surface scratches requiring re-polishing (about 8 meters total), supplier provided credit for refinishing costs. Material certificates showed full compliance with ASTM A270 sanitary tubing standards. Overall excellent choice for cost-conscious food-grade projects where you need certified 316L material. 4 stars because packaging protection could be improved for long-distance shipping.
Robert Brown
United Kingdom
2025-08-28
Premium 316L Welded Pipe for Chemical Processing
We ordered 18 tons of 316L welded pipe (323.9mm OD, 6.4mm wall thickness, ASTM A312 TP316L) for our client's phosphoric acid transfer system. Quality exceeded expectations - conducted full radiographic inspection per ASTM E1742 and found zero weld defects across 240 meters of pipe. Material certificates documented carbon at 0.019%, the lowest we've seen, which is perfect for our post-weld fabrication requirements. We performed intergranular corrosion testing per ASTM A262 Practice E on welded samples - passed with no grain boundary attack. Surface passivation per ASTM A967 showed excellent uniformity. Supplier's technical team provided valuable consultation on expansion joint design and thermal cycling considerations. Delivered in 16 days with professional packaging including desiccant packs and vapor barriers. This is our 3rd major order. Their consistency in quality and service makes them our preferred supplier for critical chemical plant applications.
William Taylor
Australia
2025-09-21
Solid 316L Pipes for Marine Exhaust System
Decent product for our commercial vessel exhaust system upgrade. Ordered 4 tons of 316L seamless pipe (88.9mm OD, Schedule 40, 6-meter random lengths) for three fishing trawlers. Material quality was good - certificates showed compliance with ASTM A312 and Australian AS 1528.1 standards. Pipes handled our 850°C intermittent exhaust gas temperatures without warping. Minor concern with one bundle having slight ovality (0.8mm deviation) which required additional fitting work, but still within ASME B36.19M tolerance limits. Supplier offered 5% discount on next order as goodwill gesture. Delivery took 19 days to Melbourne, slightly longer than quoted 15 days due to customs clearance delays (not supplier's fault). Overall reliable choice for marine applications. 4 stars because dimensional consistency could be tighter for precision fabrication work.
Ahmed Al-Hassan
UAE
2025-10-13
Reliable 316L Tubing for Coastal Architecture
Long-term partner for stainless steel architectural applications. This is our 7th order over 2 years for various coastal building projects in Dubai and Abu Dhabi. Consistency has been outstanding - every shipment of 316L tubing (ranging from 42mm to 114mm OD, polished 320 grit finish) meets our strict aesthetic and corrosion resistance requirements. Their understanding of Middle East climate challenges is excellent. They recommended specific passivation treatments for our high-humidity environment and provided maintenance guidelines for building owners. Latest order of 5 tons for handrail and water feature installations arrived perfectly packaged with protective film to prevent scratching during installation. Technical support team helped us develop welding procedures that maintain mirror finish appearance. Pricing remains competitive despite material cost fluctuations. Looking forward to continued partnership on our upcoming marina project.
Wei Chen
Singapore
2025-11-05
Perfect Quality 316L Pipes for Desalination Plant
We ordered 22 tons of 316L welded pipe (219mm OD, Schedule 10S, ASTM A312 TP316L) for our desalination plant brine handling system. Quality assessment was thorough - material certificates showed carbon at 0.022%, chromium at 17.2%, nickel at 12.1%, molybdenum at 2.6%, all within specification limits. We conducted ferrite content testing (FN 4-8) and dye penetrant inspection on weld seams - zero defects found. Surface finish was 2B with uniform appearance and no pitting. The pipes demonstrated excellent resistance to our simulated seawater corrosion testing at 40°C. Supplier provided comprehensive welding guidelines including interpass temperature controls and PWHT exemption documentation. This is our 2nd order within 6 months. Previous shipment has been performing flawlessly in our pilot system. Highly recommended for chloride-rich applications.
Hans Mueller
Germany
2025-11-28
Good Value 316L Tubing for Heat Exchanger
Good value for the price on our heat exchanger retrofit project. We compared quotes from 6 suppliers across Europe and Asia, and their price was 12% lower than German mills while maintaining acceptable quality standards. Ordered 3.5 tons of 316L seamless tubing (25.4mm OD, 2.1mm wall, bright annealed finish) with dimensional tolerances per DIN 17458. Minor issue with delivery documentation - original certificates were in Chinese requiring translation, which delayed our internal approval by 3 days. Supplier quickly provided English versions and apologized for oversight. Tubing passed our eddy current testing and met PREN requirements for our condensate system. Overall, solid choice for cost-sensitive projects where you need genuine 316L properties. 4 stars because documentation process could be smoother for European customers.
James Wilson
United Kingdom
2025-12-18
Outstanding Service and Documentation Support
Excellent service experience from inquiry to delivery for our pharmaceutical clean-room project. Communication was exceptional - technical team responded within 2 hours to our welding procedure qualification questions and provided detailed ER316L filler material recommendations per AWS A5.9. Sales representative arranged video call with metallurgist to discuss passivation requirements per ASTM A380. Delivery was impressive - 12 tons of 316L welded pipe (60.3mm OD, 2mm wall thickness) arrived in 14 days with full EN 10204 Type 3.1 certificates, heat treatment charts, and intergranular corrosion test results per ASTM A262 Practice E. Packaging was professional with wooden crates, plastic end caps, and moisture barriers. Each bundle clearly labeled with heat numbers matching MTCs. Will definitely use for our next food-grade installation project.
Michael Johnson
United States
2026-01-02
Excellent 316L Seamless Pipes for Offshore Platform
We ordered 8 tons of 316L seamless pipe (168mm OD, Schedule 40, 6-meter lengths) for our Gulf Coast offshore platform seawater cooling system. Material certificates showed carbon content at 0.025%, molybdenum at 2.4%, fully compliant with ASTM A312. We conducted PMI testing on-site and ultrasonic inspection per ASTM A999 - all results exceeded specifications. Surface finish was excellent with no visible defects or oxidation. The pipes withstood our 3.5MPa hydrostatic test without issues. Delivered in 11 days, 4 days ahead of our critical path schedule. This is our 4th order from this supplier over 18 months. Quality has been consistently excellent across all shipments. Highly recommended for marine and corrosive environments.
了解供应商
可定制
超低价
$3765
1-49 吨
基准价
$3600
50-99 吨
4.4% 优惠
$3515
≥100 吨
6.6% 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
