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30mm不锈钢棒 - AISI 304/316工业用圆形金属棒

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
$2145 1-49 吨 基准价
$2050 50-99 吨 4.4% 优惠
$2005 ≥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

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商品小计 US$ 2,145.00
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30mm不锈钢棒技术规格

属性参数描述
产品名称30mm 不锈钢圆钢直径 30mm 的圆钢,适用于工业应用
材料牌号304 / 316 / 316L / 310S / 2205提供多种不锈钢牌号
标准合规ASTM A276, EN 10088-3, JIS G4303符合主要国际标准
直径30mm(±0.5mm 公差)标准直径,精度公差
长度范围3m - 12m 或定制提供标准及定制长度
表面处理光亮、抛光、黑皮、剥皮多种表面处理选项
抗拉强度(304)≥515 MPa按 ASTM A276 的最低抗拉强度
屈服强度(304)≥205 MPa最低屈服强度
延伸率≥40%50mm 标距内的延展性
硬度≤187 HBW (304) / ≤217 HBW (316)最大布氏硬度
铬(Cr)16.0-18.0% (316) / 18.0-20.0% (304)提供耐腐蚀性
镍(Ni)10.0-14.0% (316) / 8.0-10.5% (304)增强延展性和韧性
碳(C)≤0.08% (304) / ≤0.03% (316L)碳含量影响焊接性能
应用船舶、化工、食品加工、建筑典型应用行业
耐腐蚀性在海洋和化工环境中表现优异优异的抗点蚀和缝隙腐蚀性能
认证EN 10204 3.1, ISO 9001, ASTM A276提供质量认证
包装钢带捆扎,塑料端盖,木箱标准出口包装
MOQ1 ton最小起订量

30mm不锈钢棒 - AISI 304/316工业用圆形金属棒

30mm 不锈钢圆钢在精密工程和工业制造应用中发挥着关键作用,在这些应用中,尺寸精度和耐腐蚀性至关重要。这种圆金属棒提供优质的 AISI 304 和 316 牌号,广泛应用于船舶部件、食品加工设备、制药机械和建筑结构。这些圆钢专为寻求钢厂直供优质材料的制造商、加工商和工程专业人士而设计,具有卓越的机械强度和对腐蚀环境的优异耐受性,使其成为严苛工况下的首选。

什么是 30mm 不锈钢圆钢?

30mm 不锈钢圆钢是一种按精确尺寸公差制造的实心圆柱棒材,通常符合 ASTM A276 或 EN 10088-3 圆钢规格标准。30 毫米直径是一种常用库存尺寸,兼顾结构完整性与可加工性,为既需要强度又需要加工性能的应用提供最佳性能。这些圆钢通过热轧或冷拔工艺生产,其中冷加工变体提供更严格的尺寸控制和更高的表面质量,适用于精密部件。

30mm 不锈钢圆钢技术规格

304 牌号圆钢在 20°C 时的密度为 7.93 g/cm³,根据 ASTM A240 要求,抗拉强度最低为 515 MPa。奥氏体组织含有 18-20% 铬和 8-10.5% 镍,碳含量限制在最高 0.08%。316 变体含有 2-3% 钼以增强抗点蚀性能,在富氯化物环境中实现优异性能。表面处理范围从热轧黑皮到精密研磨光亮棒,Ra 值低于 0.8 微米,按照 EN 10088-2:2014 尺寸公差制造,直径控制为 ±0.20mm。

30mm圆钢结构的核心优势

30毫米直径提供了最佳的横截面积,适用于既要求扭转刚度又要求易于加工的应用场景。该尺寸规格在保持批量订单成本效益的同时,实现了优异的材料利用效率。

卓越的耐腐蚀性能

AISI 316系列展现出出色的抗腐蚀性能,其点蚀抗力当量数(PREN)超过24,使其能够应用于海洋大气环境和化学加工环境。铬氧化物钝化层在划伤后可自动再生,提供自修复保护以抵御氧化降解。

优异的焊接特性

304和316两种牌号均在使用TIG、MIG或电阻焊方法时表现出卓越的焊接性能,无需预热处理。对于大多数应用而言,焊后热处理仍为可选项,但建议用于经历425°C以上温度的部件,以防止碳化物析出。

卓越的机械强度

冷拔30mm棒材的最低屈服强度值达到205 MPa,在50mm标距长度下的延伸率超过40%,满足JIS G4304对延展性的要求。这种组合使得成形操作得以实现,同时在循环载荷条件下保持稳健的结构完整性。

宽泛的温度使用范围

304牌号在低至-196°C的低温至870°C的连续使用温度范围内保持机械性能,而316则将工作范围扩展至925°C。这种热稳定性使这些材料适用于热交换器、炉用部件和低温储罐。

30mm不锈钢棒材供应商

常见工业应用

30mm 直径规格通常用作 CNC 加工中心的原材料,用于生产轴、紧固件和精密部件,服务于多个行业。

船舶与海洋工程

316 级棒材广泛用于螺旋桨轴、甲板配件和索具部件,在这些应用中,海水暴露要求对氯化物引起的应力腐蚀开裂具有卓越的抵抗能力。钼含量在微咸水环境中提供了关键保护。

食品与饮料加工

乳制品设备制造商使用 304 棒材制造搅拌轴、阀杆和输送机部件,这些部件需要符合 FDA 标准的材料并具有卫生的表面光洁度。无孔表面可防止细菌定植,同时承受反复的 CIP(就地清洗)消毒循环。

制药制造设备

精密研磨的 316L 变体在压片机部件、无菌灌装机械和生物反应器组件中发挥关键作用,其中超低碳含量可防止污染风险。卓越的焊接性能使复杂制造能够满足 cGMP 合规要求。

建筑与装饰元素

光亮表面的 304 棒材应用于扶手系统、栏杆部件和雕塑装置,在这些应用中,美观外观与结构功能相辅相成。镜面抛光表面可实现低于 0.4 微米的 Ra 值,带来优质的视觉冲击力。

30mm 不锈钢棒材批发

材料等级选择指南

在 304 和 316 等级之间进行选择需要评估环境暴露条件、机械载荷要求和预算考虑,以实现最佳材料规格。

何时指定 AISI 304

室内应用、淡水环境和一般工业制造场景中,若成本效益优先于最大耐腐蚀性,请选择 304 等级。这种奥氏体等级具有优异的成形性,可通过标准分销渠道以工厂竞争性价格轻松获取。

何时指定 AISI 316

对于沿海安装、化学加工设备或任何涉及氯化物暴露超过 500 ppm 的应用,请指定 316 等级。钼的添加通过延长使用寿命和减少恶劣环境中的维护间隔,证明了其溢价定价的合理性。

30mm 不锈钢棒制造商

质量认证与测试

所有钢厂认证材料均包含依据 ASTM E415 光学发射光谱法进行的化学成分分析,以及依据 ASTM E8 标准通过拉伸测试进行的力学性能验证。

材料测试证书

每批生产均附有 EN 10204 Type 3.1 证书,记录炉号可追溯性、化学分析结果和力学性能测试数据。对于需要独立验证的关键应用,可应要求提供第三方检验服务。

尺寸检验报告

精密研磨棒材包含尺寸检验报告,验证直径公差、直线度偏差和表面粗糙度测量值。统计过程控制确保生产批次中 99.7% 符合规定公差。

常见问题

最小起订量(MOQ)是多少?

我们的标准 MOQ 为每规格 500 公斤,但可根据仓库库存以现行市场价格接受更小数量。定制长度需要至少一公吨的订单量,以证明钢厂生产排期的合理性。

你们提供材料测试证书吗?

是的,每次发货均免费提供 EN 10204 Type 3.1 工厂测试证书,记录完整的化学成分和力学性能验证。对于需要独立质量保证的项目,可以安排第三方检验证书。

典型的交货时间是多少?

304 和 316 牌号的库存尺寸从我们的配送中心发货,5-7 个工作日内发出。需要钢厂生产的定制规格通常根据当前生产计划和订单量在 6-8 周内交付。

你们能按定制尺寸切割吗?

我们的精密切割服务可满足 ±1mm 的长度公差,采用砂轮切割方法以尽量减少热影响区。批量订单可享受自动锯切服务,包括去毛刺和端面垂直度验证,均包含在加工费用中。

获取 30mm 不锈钢圆钢的竞争性报价

我们的技术销售团队提供全面的材料选型支持,将冶金专业知识与价值驱动的定价结构相结合。我们在 304 和 316 牌号上均保持战略库存,能够快速满足紧急项目需求,同时为计划采购提供批量折扣。

  • 24/7 客户支持,可进行技术咨询
  • 免费样品用于质量评估和材料测试
  • 批量订单具有竞争力的价格和灵活的付款条件
  • 关于牌号选择和应用工程的专业技术咨询

立即联系我们,24 小时内获取免费报价!

评分与评价

4.5
基于 10 条评价
5 6
4 3
3 1
2 0
1 0
用户
John Smith
United States
2025-07-02
Superior 316 Rods for Repeat Offshore Orders
Long-term partnership for 30mm 316 stainless steel rod supply to our offshore platform fabrication division. This is our 9th order over 24 months totaling approximately 18 tons. Consistency remains exceptional - every batch maintains PREN above 25, critical for Gulf of Mexico saltwater exposure in our rigging component manufacturing. Their mill maintains strict process control with carbon content consistently below 0.03% and molybdenum at 2.5-2.8%. Delivery reliability averages 10 days from PO to dock receipt. Technical support team provides valuable welding procedure specifications for TIG applications. Price competitiveness combined with zero quality rejections makes them our preferred supplier for marine-grade materials. Looking forward to continued collaboration.
用户
Robert Brown
United Kingdom
2025-07-21
Acceptable Quality with Documentation Issues Resolved
Decent product quality but encountered documentation issues initially on our 900kg order of 30mm 316 rod for chemical processing equipment. Material certificates were missing molybdenum percentage data on first shipment, causing project delay of 3 days pending corrected documentation. Supplier responded professionally and provided complete EN 10204 Type 3.1 certificates within 24 hours via email, then sent hard copies by courier. Physical material quality was acceptable - tensile testing confirmed 520 MPa strength and corrosion resistance met our chloride exposure requirements. Would suggest implementing better quality control on certificate preparation before shipment. Material performance has been satisfactory in service for 4 months. Recommend verifying documentation completeness upon ordering.
用户
Chris Martin
Canada
2025-08-08
Reliable 30mm Bars for General Fabrication
Reliable quality for general industrial fabrication work. Ordered 1.5 tons of 30mm 304 hot-rolled rod for valve stem production. We compared quotes from 5 North American distributors and their pricing was 12% lower while providing equivalent mill certifications. Chemical composition analysis showed chromium at 18.2% and nickel at 8.4%, within ASTM specifications. Minor scale on hot-rolled surface required additional descaling, adding 15 minutes per piece in processing time. Overall good value for non-critical applications where surface finish is secondary to mechanical properties. 4 stars because hot-rolled finish required extra preparation versus cold-drawn alternatives.
用户
Carlos Silva
Brazil
2025-08-31
Perfect Material for Architectural Handrails
Perfect material quality for our architectural handrail project requiring 800kg of 30mm 304 bright-finished rod. Surface quality was outstanding with Ra values measured at 0.35 micrometers, achieving mirror-polish appearance for premium visual impact in luxury hotel installation. Dimensional consistency held ±0.12mm across 4-meter lengths, enabling seamless fitting assembly. Supplier's technical team provided valuable guidance on post-fabrication polishing techniques to maintain aesthetic finish. Material exhibited excellent formability during cold bending operations for curved sections without surface cracking. This is our 3rd architectural project using their material. Highly recommended for decorative applications demanding superior appearance.
用户
Wei Chen
Singapore
2025-09-23
Solid Quality for Food Processing Shafts
Solid quality on 2-ton order of 30mm 304 bright bar for food processing agitator shafts. We compared pricing from 4 Asian suppliers and their quote was competitive at mid-range while offering superior surface finish compared to hot-rolled alternatives. Tensile strength testing showed 545 MPa, exceeding ASTM A240 minimum requirements by 6%. Delivery took 9 days, slightly longer than quoted 7 days due to customs clearance delays. Material performed well in dairy equipment applications with no bacterial colonization issues after 5 months of continuous operation. 4 stars due to minor delivery delay, but would order again for FDA-compliant applications.
用户
Ahmed Al-Hassan
UAE
2025-10-14
Premium 30mm 316L Bars for Pharmaceutical Equipment
We ordered 1.2 tons of 30mm 316L precision-ground rod (Ra 0.4 micrometers) for pharmaceutical mixing equipment fabrication. Material certificates documented ultra-low carbon content at 0.018%, critical for preventing contamination in our sterile processing applications. Straightness deviation measured only 0.8mm per meter, exceptional for 6-meter lengths. Surface finish achieved mirror-polish quality suitable for cGMP compliance requirements. Supplier provided third-party inspection certificates from SGS at no additional charge. This is our 2nd order. Material performance in bioreactor shaft applications has been flawless with zero corrosion issues after 14 months of CIP sanitization cycles.
用户
William Taylor
Australia
2025-11-05
Reliable Long-Term Partner for Marine Components
Long-term partner for 316 stainless steel rods in various diameters. This is our 7th order over the past 18 months for marine deck fitting production. Consistency has been exceptional - every shipment meets ASTM A276 specifications with PREN values consistently above 24 for our coastal installation projects. Their precision cutting service maintains ±0.8mm tolerance on custom 850mm lengths, eliminating secondary operations. Technical support team provides valuable application engineering guidance for welding procedures and corrosion prevention strategies. Looking forward to continued partnership for our expanding offshore projects.
用户
Hans Mueller
Germany
2025-11-28
Good Value 30mm Rods for Shaft Production
Good value for the price on our 3-ton order of 30mm 304 cold-drawn bars. We compared quotes from 6 suppliers across Europe and Asia, and their price was 8% lower than European mills while maintaining acceptable quality standards for our shaft production requirements. Minor surface marks on approximately 2% of rods required additional polishing, adding slight processing time. Chemical composition analysis matched specifications perfectly. Overall, solid choice for cost-sensitive projects where minor cosmetic imperfections are acceptable. 4 stars because surface quality wasn't quite premium grade, though functionality remains unaffected.
用户
Michael Johnson
United States
2025-12-18
Outstanding Service and Fast Delivery
Excellent service experience from inquiry to delivery for our 1.8-ton order of 30mm 304 rods. Communication was prompt and professional - technical sales team responded within 2 hours with detailed grade selection guidance and provided comprehensive EN 10088-2 compliance documentation. Delivery exceeded expectations - material arrived in 6 days via air freight, 3 days earlier than standard lead time. Packaging was industrial-grade with moisture barrier wrapping, wooden crates with steel banding, and individual rod separation to prevent surface damage during transit. Each bundle included dimensional inspection reports and EN 10204 Type 3.1 certificates. Will definitely use for future CNC machining feedstock requirements.
用户
James Wilson
United Kingdom
2026-01-02
Excellent Quality 30mm 316 Rods for Marine Shafts
We ordered 2.5 tons of 30mm diameter 316 stainless steel rod (cold-drawn, bright finish) for propeller shaft manufacturing. Material certificates showed molybdenum content at 2.4%, carbon at 0.025%, fully compliant with ASTM A276. We conducted ultrasonic testing and results showed zero internal defects. Surface finish was exceptional bright bar with Ra 0.6 micrometers, no visible scratches. Dimensional tolerance held at ±0.15mm across entire batch. Delivered in 11 days, 4 days ahead of promised schedule. This is our 4th order from this supplier. Quality has been consistently excellent for marine applications requiring maximum corrosion resistance. Highly recommended for saltwater environments.

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
$2145 1-49 吨 基准价
$2050 50-99 吨 4.4% 优惠
$2005 ≥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$ 2,145.00
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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