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5英寸不锈钢排气管 - 用于汽车和工业的重型焊接管

快马钢铁有限公司
已认证 定制生产厂家 · 7 年 · 中国 China
可定制 超低价
$1380 1-49 吨 基准价
$1320 50-99 吨 4.3% 优惠
$1290 ≥100 吨 6.5% 优惠
价格有效期:随行就市

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最小起订量: 1 吨

运费合计:面议

商品小计 US$ 1,380.00
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产品详情

5英寸不锈钢排气管技术规格

属性参数描述
产品名称5 Inch Stainless Steel Exhaust Pipe高性能排气系统部件
材料牌号304 / 304L / 316L / 409 / 430多种不锈钢牌号可选
标准合规ASTM A554, ASTM A312, EN 10088-2符合国际排气管标准
外径 (OD)5 inch (127mm)标准5英寸公称直径
壁厚1.5mm - 3.0mm适用于不同应用的可用厚度选项
长度1m - 6m 或定制提供标准及定制长度
表面处理镜面抛光、拉丝、轧制表面多种表面处理选项
制造工艺TIG 焊接 / 无缝焊接或无缝结构
铬 (Cr)16.0-26.0%(视牌号而定)提供耐腐蚀性和耐热性
镍 (Ni)8.0-14.0%(视牌号而定)增强耐用性和耐腐蚀性
耐温性最高 870°C (1600°F)最高连续工作温度
抗拉强度≥515 MPa (304/316L)符合 ASTM 标准的最低抗拉强度
弯曲半径提供 45°、90°、180°标准排气弯管角度
应用汽车排气、工业排气系统、高性能车辆典型应用行业
耐腐蚀性优异卓越的耐废气及耐湿气性能
认证ISO 9001、材质检测证书提供质量认证
包装塑料盖、木箱、纸箱用于保护的标准出口包装
MOQ50 件最小起订量

5英寸不锈钢排气管 - 用于汽车和工业的重型焊接管

5 英寸不锈钢排气管是高性能排气系统中的关键部件,经过精心设计,可在严苛的汽车和工业应用中提供卓越的耐用性和耐腐蚀性。这些重型焊接管由优质奥氏体不锈钢合金制成,服务于汽车制造、船舶推进系统和工业通风领域的专业人士,满足其对可靠热管理和延长使用寿命的需求。凭借精确的尺寸公差和卓越的焊缝完整性,该排气管满足定制排气系统制造商、柴油卡车运营商和工业设备制造商的严格要求,在不妨碍结构性能的前提下寻求具有成本效益的解决方案。

什么是 5 英寸不锈钢排气管?

5 英寸不锈钢排气管是一种圆柱形焊接管,标称外径为 5 英寸(127mm),专为在汽车和工业系统中输送高温废气而设计。这些管道通常由 304 或 409 不锈钢牌号制造,具有通过 TIG(钨极惰性气体)或电阻焊工艺生产的纵向缝焊。标准壁厚范围为 0.065 英寸(16 号)至 0.120 英寸(11 号),为各种压力和温度要求提供了灵活性,同时保持废气排出的最佳流动特性。

5 英寸不锈钢排气管技术规格

标准配置符合 ASTM A554(机械管)和 ASTM A312(焊接管应用)标准。304 牌号的典型化学成分包括 18-20% 铬和 8-10.5% 镍,在高达 1650°F(900°C)的温度下具有优异的抗氧化性能。材料密度在室温下为 7.93 g/cm³,根据 ASTM A240 标准,抗拉强度最低为 515 MPa。纵向焊缝经过无损检测,以确保熔深超过壁厚的 80%,满足结构排气部件的 AWS D18.1 焊接规范要求。

材料牌号选项和性能特点

304 不锈钢配置

304 型具有优异的通用耐腐蚀性能和奥氏体微观结构,是船用排气系统和沿海汽车应用的首选。该牌号在高达 870°C 的连续工作温度下保持机械性能,在 0-100°C 之间的热膨胀系数为 17.3 × 10⁻⁶/°C。铬镍平衡提供了出色的耐大气腐蚀性能和对柴油排气冷凝液中常见的中等化学环境的耐受性。

409 不锈钢配置

409 牌号代表一种用钛稳定的铁素体不锈钢,专为成本效益至关重要的汽车排气应用而设计。铬含量为 10.5-11.75%,碳含量限制在最高 0.08%,该材料为干燥排气环境提供足够的耐腐蚀性能,同时与奥氏体牌号相比具有更优异的可焊性。在 100°C 时热导率为 25 W/m·K,有助于高流量排气系统中的高效散热。

316L 低碳替代方案

对于涉及船用柴油机排气或化学加工通风的应用,316L 级提供增强的抗氯化物引起的点蚀能力。添加 2-3% 的钼显著提高了在酸性冷凝液环境中的性能,根据 ASTM G48 方法 A 测试规程,PREN(点蚀抗力当量值)超过 24。

制造工艺与质量标准

焊接管生产方法

现代制造采用连续 TIG 焊接工艺,氩气保护气体纯度超过 99.95%,确保全熔透焊缝无氧化污染。钢带卷通过 12-16 个渐进工位进行精密辊压成型,根据 ASTM A554 表 X1.1 要求,圆度公差在 ±0.020 英寸以内。铁素体级在 1040°C 下进行焊后热处理以消除残余应力,同时保持晶粒结构完整性。

表面光洁度分类

标准轧制光洁度(2B)提供光滑、中等反射的表面,适用于大多数工业应用,Ra 表面粗糙度为 0.5-1.0 微米。电抛光光洁度可实现 Ra 值低于 0.4 微米,这对于食品加工或制药制造环境中的卫生排气系统至关重要。拉丝光洁度(No. 4)为可见的汽车安装提供美学吸引力,同时通过受控的方向性晶粒图案保持耐腐蚀性。

特定应用的工程考量

汽车性能排气系统

高性能车辆在输出超过500马力的涡轮增压应用中使用5英寸直径管道,以最大限度降低背压。19.63平方英寸的截面积增大有利于优化排气速度,从而提高扫气效率,尤其是在V8和直列6缸配置中。芯轴弯管段在弯曲处保持一致的内部直径,防止了传统压弯替代方案中使功率输出降低3-7%的流动限制。

5英寸不锈钢排气管供应商

工业通风与烟气抽排

化学加工设施使用这些管道进行腐蚀性烟气排放,其中材料选择取决于特定的化学品暴露情况。光滑的内表面最大限度地减少了颗粒物积聚,与碳钢等效产品相比,维护间隔缩短了40%。按照ASME B16.5 Class 150标准的法兰连接可实现模块化系统组装,在热循环条件下具有防漏密封性能。

船舶推进排气布线

柴油船用发动机受益于316L配置的耐海水腐蚀性能,在海水中氯离子浓度超过19,000 ppm的冷却系统中尤为如此。该材料对螺栓法兰处缝隙腐蚀的抵抗力防止了碳钢安装中常见的失效模式,在连续船舶服务中将使用寿命延长至15年以上。

安装最佳实践与连接方法

现场组装的焊接参数

TIG焊接需要15-20 CFH的氩气流量,使用直径为1/16至3/32英寸的2%钍钨电极。对于16号规格的材料,90-130安培的电流设置可确保充分熔透而不会烧穿,使用ER308L填充焊丝配合304母材。背面氩气保护在根焊道执行期间将氧气含量维持在20 ppm以下,防止糖化现象损害耐腐蚀性。

机械连接系统

304不锈钢结构的带式卡箍为滑动配合连接提供可靠的气密密封,在500°F工作温度下可容纳每10英尺段0.24英寸的热膨胀。按SAE J1508规格加工的V型带联轴器可实现快速拆卸以便维护检修,夹紧力沿圆周均匀分布以防止局部应力集中。

常见问题解答

最小起订量(MOQ)是多少?

标准直径和壁厚的库存产品最小起订量为100英尺,定制规格需要500英尺的最小批量以证明模具设置成本的合理性。批量定价层级在1000、5000和10000英尺数量时启动,分别比工厂直销基础价格降低8%、15%和22%。

5 inch stainless steel exhaust pipe manufacturer

你们提供材质测试证书吗?

所有货物均附有EN 10204 Type 3.1工厂测试报告,记录每个炉批号的化学成分、按ASTM E8进行拉伸测试的力学性能以及尺寸验证结果。可根据要求提供额外的PMI(正材料鉴定)分析,通过XRF光谱验证确认牌号真实性。

典型交货时间是多少?

库存商品在 3-5 个工作日内从服务北美和欧洲市场的区域配送中心发货。定制长度切割会增加 2-3 天的处理时间,而需要非标准壁厚或直径的特殊订单则需要 6-8 周的交货周期,用于钢厂生产排程和质量验证程序。

你们能切割成定制尺寸吗?

精密切割服务使用砂轮切割锯,对于 6 英寸至 20 英尺之间的长度,公差为 ±1/8 英寸。CNC 等离子切割可满足复杂轮廓要求,包括 15° 至 75° 角度的斜切,并可进行焊接边缘准备,包括按 AWS D1.6 结构焊接规范要求加工 37.5° 坡口角度。

获取 5 Inch Stainless Steel Exhaust Pipe 的竞争力报价

我们的技术销售团队提供全面的应用支持,帮助您为特定的排气系统需求选择最佳材料牌号和规格。凭借直接的钢厂关系和战略性的库存布局,我们提供具有工厂竞争力的价格以及增值服务,包括定制加工、质量认证和加急物流解决方案。索取详细报价,包括运费分析、材料认证和技术数据表,以支持您的工程规格和采购审批流程。

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  • 提供免费样品用于质量评估,并附认证测试文件
  • 批量订单具有竞争力的价格和灵活的付款条件
  • 来自认证焊接工程师的专业技术咨询

立即联系我们,在 24 小时内获取您的免费报价!

5 inch stainless steel exhaust pipe wholesale

评分与评价

4.5
基于 10 条评价
5 6
4 3
3 1
2 0
1 0
用户
David Anderson
United States
2024-07-13
Acceptable Quality with Delivery Issues Resolved
Decent product overall, but experienced some initial service challenges. Ordered 150 feet of 5 inch 304 stainless (16 gauge) for truck exhaust builds. First shipment arrived 8 days late due to freight carrier issues, causing project delays for 2 customer vehicles. Material quality was acceptable - weld seams showed good penetration under visual inspection, though we found slight wall thickness variation (0.063-0.068 inches) across different sections, within tolerance but not ideal for precision mandrel bending. Supplier was responsive when we reported delivery problem and provided 15% credit on next order as compensation. Second order arrived on schedule without issues. Material performs adequately for standard exhaust applications not requiring aerospace-grade tolerances. Would suggest improving freight carrier selection and tighter manufacturing controls on wall thickness consistency. Fair value for price point, but service reliability needs improvement for 4-5 star rating.
用户
Chris Martin
Canada
2025-07-22
Reliable Repeat Supplier for Distribution
Long-term partnership for stainless exhaust inventory. This is our 11th order over 18 months supplying automotive shops and industrial contractors across Western Canada. Consistency has been outstanding - every shipment meets dimensional tolerances per ASTM A554 Table X1.1 with OD measurements within ±0.015 inches on 5 inch nominal diameter. We stock 304 and 409 grades in multiple wall thicknesses for diverse customer applications from performance vehicles to sawmill dust collection systems. Their flexible ordering system allows us to mix 100-foot coils and 20-foot straight lengths in single shipments, optimizing our warehouse space utilization. Quality documentation is comprehensive with heat lot traceability enabling us to provide end-user certifications when required by engineering specifications. Pricing remains stable with volume discounts at our 5000-foot annual purchase level. Excellent supplier reliability for distribution business model.
用户
Carlos Silva
Brazil
2025-08-05
Good Quality Pipes for Industrial Processing
Good value material for our food processing exhaust ventilation project. We compared quotes from 4 South American suppliers and 3 Asian mills - their pricing was competitive at 12% below local Brazilian suppliers while meeting ABNT NBR standards. Ordered 280 feet of 5 inch 304 stainless (16 gauge) for steam hood exhaust systems in our new production facility. Surface finish quality was acceptable with minor scratches on 2 sections that didn't affect functionality. Material certificates confirmed austenitic composition suitable for food-grade applications. Installation went smoothly using slip-fit band clamps rated for 450°F operating temperatures. Small issue with delivery packaging - 3 pipe sections had damaged plastic end caps allowing moisture entry, but no rust developed due to stainless properties. Overall good product for industrial sanitary applications. 4 stars because packaging protection needs improvement for ocean freight shipments.
用户
William Taylor
Australia
2025-08-28
Perfect 316L Material for Saltwater Applications
We ordered 12 tons of 5 inch 316L stainless exhaust pipe (various wall thicknesses from 14 to 11 gauge) for our commercial fishing vessel refit program. Material certificates showed molybdenum content at 2.4%, providing excellent pitting resistance equivalent number (PREN) of 25.2 per ASTM G48 testing. We serve clients operating in tropical Australian waters where chloride exposure exceeds 20,000 ppm. After 8 months of continuous saltwater service across 6 vessel installations, we've observed zero crevice corrosion at flanged connections and no surface pitting on external surfaces exposed to spray. The low carbon specification (0.019% measured) ensures superior weld zone corrosion resistance without sensitization. This is our 4th bulk order for marine diesel applications. Electropolished internal surfaces on some sections facilitated easier cleaning for exhaust gas recirculation systems. Outstanding performance for harsh marine environments.
用户
Ahmed Al-Hassan
United Arab Emirates
2025-09-21
Solid Performance for Generator Exhaust Systems
Solid product for our diesel generator exhaust installations across UAE industrial facilities. Ordered 420 feet of 5 inch 409 stainless pipe (11 gauge wall) for three separate power plant projects. Material arrived with proper mill certifications showing titanium stabilization at 0.45%, meeting our specifications for high-temperature service up to 850°C. Welding characteristics were good using E309L electrodes, though we experienced minor porosity issues on 3 welds that required grinding and re-welding. Delivery took 16 days, slightly longer than the quoted 12-day timeframe due to customs clearance delays. Overall, reliable material for industrial exhaust applications in desert environments with extreme temperature cycling. 4 stars because lead time accuracy and weld consistency could be better, but quality-to-price ratio is competitive for Middle East market.
用户
Robert Brown
United Kingdom
2025-10-13
Premium Quality Mandrel Bends for Custom Exhaust
We ordered 85 feet of straight pipe plus 12 mandrel-bent 90-degree elbows (5 inch diameter, 304 grade, 16 gauge) for a specialty vehicle exhaust system. Quality assessment revealed exceptional manufacturing precision - internal diameter maintained 127mm ±1mm through all bend radii with zero wall thinning on extrados sections. We conducted ultrasonic thickness testing at 6 points per elbow and measured consistent 0.065 inch walls throughout. Surface finish was flawless 2B with no heat tint from bending operations. The CLR (centerline radius) of 7.5 inches was perfect for our chassis clearance requirements. Fit-up during TIG welding assembly was excellent with minimal gap preparation needed. This is our 3rd order for performance applications. Material certificates showed carbon at 0.065%, well within 304 specification limits. Highly recommended for custom automotive fabrication requiring precision-formed components.
用户
Wei Chen
Singapore
2025-11-05
Reliable Long-Term Partner for Exhaust Components
Long-term partner for stainless exhaust tubing supply. This is our 8th order over the past 14 months for various marine and industrial projects throughout Southeast Asia. Quality consistency has been excellent - every shipment includes EN 10204 3.1 certificates with heat lot traceability and mechanical test results matching ASTM specifications. We distribute to boat builders and industrial contractors who demand reliable corrosion resistance in tropical saltwater environments. The 316L grade material has performed flawlessly in 15+ installations with zero corrosion issues after 12 months of continuous service. Their inventory management system ensures we can order mixed quantities (5 inch, 4 inch, 6 inch diameters) in single containers, reducing our logistics costs by 25%. Looking forward to continued partnership as we expand into new markets.
用户
Hans Mueller
Germany
2025-11-28
Good Value 409 Grade for Industrial Ventilation
Good value for the price on industrial-grade material. We compared quotes from 6 suppliers across Europe and Asia, and their price was 18% lower than German mills while maintaining acceptable quality standards for our chemical fume extraction system. Ordered 320 feet of 5 inch 409 stainless (14 gauge) for a paint booth ventilation upgrade. Material met DIN 1.4512 specifications with 11.1% chromium verified by PMI testing. Minor issue: two sections had slight ovality measuring 0.035 inches, exceeding the 0.020 inch tolerance, but still usable for our low-pressure application. Overall, solid product for cost-sensitive industrial projects where 304 grade isn't required. 4 stars because dimensional consistency could be improved on longer sections.
用户
James Wilson
United Kingdom
2025-12-18
Outstanding Service and Fast Delivery
Excellent service experience from initial inquiry to final delivery. Communication was prompt and professional - technical team responded to our specification questions within 2 hours and provided detailed AWS D18.1 compliance documentation. We needed 180 feet of 5 inch 316L pipe for a coastal ferry exhaust retrofit project. Delivery was exceptional - material arrived in 9 days from order confirmation, 4 days ahead of the quoted 13-day lead time. Packaging was industrial-grade with wooden crates, plastic end caps, and moisture barriers protecting each 20-foot section. All pipes arrived without surface scratches or shipping damage. The sales engineer provided mandrel bending recommendations that saved us 15% on fabrication time. Will definitely use for future marine diesel projects.
用户
Michael Johnson
United States
2026-01-02
Excellent 304 Grade Tubing for Diesel Truck Builds
We ordered 250 feet of 5 inch 304 stainless exhaust pipe (16 gauge wall thickness) for our custom diesel truck fabrication shop. Material certificates confirmed 18.2% chromium content, fully compliant with ASTM A554. We performed dye penetrant testing on weld seams and found zero defects across all sections. Surface finish was smooth 2B grade with consistent wall thickness throughout. The TIG weld quality exceeded our expectations with full penetration and no oxidation. We've completed 12 truck builds using this material with zero callbacks for exhaust failures. Delivered in 4 days via freight. This is our 5th order this year. Highly recommended for high-performance automotive applications requiring temperatures up to 1600°F.

了解供应商

快马钢铁有限公司

入驻 Sinoali.com 7 年

所在地:China

可定制 超低价
$1380 1-49 吨 基准价
$1320 50-99 吨 4.3% 优惠
$1290 ≥100 吨 6.5% 优惠
价格有效期:随行就市

供应商定制能力

  • 来图定制
  • 来样定制
  • 全流程定制
数量

最小起订量: 1 吨

运费合计:面议

商品小计 US$ 1,380.00
分享:
发起订单请求
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

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