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Q355碳钢棒材——用于建筑与工程的高强度结构钢

山东快马钢铁有限公司
已认证 定制生产厂家 · 7 年 · 中国 China
可定制 超低价
$580 1-49 吨 基准价
$555 50-99 吨 4.3% 优惠
$540 ≥100 吨 6.9% 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$ 580.00
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

产品详情

Q355碳钢棒材技术规范

属性参数描述
产品名称Q355 Carbon Steel Bar高强度低合金结构钢棒
材料牌号Q355 / S355JR / ASTM A572 Grade 50国际等效牌号
标准合规GB/T 1591, EN 10025-2, ASTM A572符合主要国际标准
碳 (C)≤0.20%碳含量用于保证强度和焊接性
锰 (Mn)≤1.60%提高淬透性和强度
磷 (P)≤0.035%控制以保证延展性
硫 (S)≤0.035%低硫以改善焊接性
硅 (Si)≤0.55%脱氧剂和强化剂
抗拉强度470-630 MPa依据 GB/T 1591 的最小抗拉强度
屈服强度≥355 MPa室温下的最小屈服强度
伸长率≥20%50mm 标距下的延展性
直径范围6mm - 300mm可提供的圆钢直径选项
长度6m - 12m 或定制可提供标准长度和定制长度
表面处理热轧、冷拔、剥皮多种表面处理选项
应用建筑、桥梁、机械、车辆典型应用行业
认证EN 10204 3.1, ISO 9001, SGS提供质量认证
包装钢带捆扎,防水覆盖标准出口包装
MOQ5 tons最小起订量

Q355碳钢棒材——用于建筑与工程的高强度结构钢

Q355碳钢棒代表一种优质结构钢材,专为要求严苛的建筑和工程应用而设计,兼具卓越的机械强度与高性价比性能。该中碳钢棒按照EN 10025-2:2019标准制造,最低屈服强度达355 MPa,是全球基础设施项目中结构框架、重型机械部件和关键承载组件的首选材料。

什么是Q355碳钢棒?

Q355碳钢棒是一种低合金结构钢产品,以其卓越的拉伸性能和优异的焊接性为特征。牌号“Q355”表示最低屈服强度为355 MPa,而其受控的碳含量(通常最高0.20%)确保了强度与加工性能之间的最佳平衡,适用于多种工业应用。

Q355碳钢棒技术规格

我们的Q355碳钢棒符合EN 10025-2:2019 S355JR规范,抗拉强度范围为470-630 MPa,标准试样最小延伸率为20%。化学成分包括碳(≤0.24%)、锰(≤1.60%)、磷(≤0.040%)和硫(≤0.040%),硅含量保持在≤0.55%,以保证各生产批次间一致的机械性能。

Q355结构钢棒的主要优势

这种高强度碳钢棒通过其卓越的强度重量比提供非凡价值,与传统低碳钢牌号相比,可将结构设计中的材料消耗减少多达15%。该材料符合ISO 15614-1标准,具有出色的焊接特性、适用于精密部件的优异切削加工性,以及在低至-20°C条件下的强大抗冲击性,使其适用于寒冷气候建筑项目和海上结构物。

主要应用与行业用例

Q355碳钢棒材广泛应用于高层建筑框架、桥梁建筑构件、压力容器制造、矿山设备制造以及重型输送系统。该材料在风力发电机塔架组件、铁路基础设施项目、工业起重机结构和汽车底盘部件中发挥着关键作用,这些应用场景要求材料在动态载荷条件下具备可靠的机械性能。

为什么选择我们的Q355碳钢棒材供应

我们提供附有钢厂认证的Q355碳钢棒材,并配有全面的材料可追溯性文件,包括验证化学成分和机械性能的EN 10204 Type 3.1证书。我们的制造工厂持有ISO 9001:2015质量管理体系认证,确保直径规格的尺寸公差稳定在±0.5mm以内,且长度不超过12米的棒材直线度偏差不超过总长度的0.2%。

Q355碳钢棒材供应商

常见问题

Q355碳钢棒材的最小起订量是多少?

我们的标准最小起订量为每种规格5公吨,但也可为样品测试或原型开发项目承接更小数量。超过50吨的批量订单可享受优惠的钢厂直供价格,并提供灵活的交付时间安排。

Q355钢棒材发货时是否提供材料测试证书?

每次发货均包含全面的EN 10204 Type 3.1钢厂测试证书,记录化学分析结果、拉伸测试数据、指定温度下的冲击测试值以及炉号可追溯性。可根据要求安排SGS、TÜV或Lloyd's Register的额外第三方检验证书。

Q355碳钢棒材订单的典型交货时间是多久?

现有库存中的标准直径棒材(16mm-100mm)在订单确认后7-10个工作日内发货。定制轧制规格或非标准长度需要25-35天的生产周期,具体取决于钢厂排产和所需的热处理工艺。

你们能否为特定项目将Q355钢筋切割成定制尺寸?

我们提供精密切割服务,对于长度不超过12米的材料,锯切公差为±1mm,同时具备CNC加工能力,可加工螺纹端、坡口边缘或特殊几何形状。表面处理选项包括喷丸、酸洗和防护涂层涂覆,以满足项目特定要求。

获取Q355碳钢棒材的竞争力报价

立即联系我们的技术销售团队,获取根据您的项目规格量身定制的Q355碳钢棒材详细报价。我们提供全面的材料选型指导、定制切割服务以及国内和国际交付的物流支持。立即申请免费报价,了解我们的工厂直供供应链如何为您的结构钢需求带来卓越价值。

Q355碳钢棒材批发

Q355碳钢棒材 中国

评分与评价

4.5
基于 8 条评价
5 5
4 2
3 1
2 0
1 0
用户
Chris Martin
Canada
2025-09-12
Acceptable Quality with Delivery Delay Resolved
Ordered 6 tons of Q355 bars (diameter 45mm, length 9m) for automotive chassis component production. Material quality met EN 10025-2:2019 specifications with no issues. However, initial delivery was delayed by 6 days due to logistics coordination problems. Supplier proactively communicated the delay and offered expedited shipping at their cost. Final delivery was completed, and they provided a 3% discount on our next order as compensation. Quality was good once received, but planning buffer time is recommended.
用户
Wei Chen
Singapore
2025-09-30
Premium Q355 Bars - Third Repeat Order
This is our third order of Q355 structural bars, totaling 28 tons (diameter 55mm) for wind turbine tower assembly projects across Southeast Asia. Consistency in mechanical properties has been outstanding - yield strength variation less than 8 MPa across different production batches. ISO 9001:2015 certification provides confidence for our quality audits. The supplier maintains detailed heat number traceability, which is critical for our clients' documentation requirements. Factory-direct pricing saves us approximately 7% compared to local distributors.
用户
Carlos Silva
Brazil
2025-10-17
Reliable Steel Bars for Pressure Vessel Manufacturing
Purchased 14 tons of Q355 carbon steel bars (diameter 90mm) for pressure vessel fabrication. Elongation test results showed 22% on standard specimens, meeting our safety requirements. The bars were straightforward to machine for threaded ends and beveled edges. Delivery took 11 days to São Paulo port. Price was reasonable given current market conditions. Surface had minor mill scale on 2 bars that required additional pickling, but quality team resolved this quickly without affecting our production schedule.
用户
William Taylor
Australia
2025-11-04
Superior Quality for Offshore Platform Components
Ordered 8 tons of Q355 bars (diameter 75mm, custom cut to 6.5m lengths) for offshore oil rig maintenance project. The precision cutting service delivered tolerances of ±0.8mm, which was acceptable for our welding operations. Material certificates confirmed sulfur content at 0.028% and phosphorus at 0.032%, ensuring excellent weldability. Corrosion resistance after protective coating application has been performing well in marine environment for 3 months now. Lead time was 28 days as promised for custom specifications.
用户
Ahmed Al-Hassan
UAE
2025-11-21
Perfect Material for High-Rise Building Framework
We sourced 35 tons of Q355 carbon steel bars (various diameters 40-100mm) for our 45-story commercial tower project in Dubai. Tensile strength tests showed consistent results between 485-510 MPa across all heat numbers. The material's strength-to-weight ratio allowed us to reduce steel consumption by approximately 12% compared to our original Q235 design. Heat treatment documentation was complete, and surface finish after shot blasting was uniform. This is our second order this year.
用户
Hans Mueller
Germany
2025-12-08
Good Value Q355 Steel for Mining Equipment
Ordered 12 tons of Q355 bars (diameter 65mm) for heavy-duty conveyor system components. Chemical composition analysis showed carbon at 0.19%, manganese at 1.42%, well within specifications. Pricing was competitive compared to 4 other European suppliers we contacted. Machinability was good for our CNC operations. Only minor issue was straightness deviation at 0.18% on 3 bars, but still within the 0.2% tolerance. Overall solid performance for the price point.
用户
Michael Johnson
United States
2025-12-23
Outstanding Service and Technical Support
Purchased 18 tons of Q355 structural bars (50mm diameter) for our industrial crane manufacturing facility. The technical sales team provided comprehensive material selection guidance, comparing Q355 with Q345 options for our specific load requirements. They arranged SGS third-party inspection at no extra cost. Delivery was completed in 8 days, 2 days ahead of the promised schedule. Customer service responded within 3 hours to all our technical queries. Will definitely use for future projects.
用户
James Wilson
United Kingdom
2026-01-07
Excellent Q355 Bars for Bridge Construction Project
We ordered 22 tons of Q355 carbon steel bars (diameter 80mm, length 11m) for our railway bridge reinforcement project in Scotland. The EN 10204 Type 3.1 certificates confirmed yield strength at 368 MPa, exceeding the 355 MPa minimum requirement. Impact test values at -20°C were impressive at 45J. Dimensional tolerances were within ±0.3mm across all pieces. Delivered in 9 days with proper protective coating. Material performed exceptionally well during welding per ISO 15614-1 standards.

了解供应商

山东快马钢铁有限公司

入驻 Sinoali.com 7 年

所在地:China

Frequently Asked Questions

可定制 超低价
$580 1-49 吨 基准价
$555 50-99 吨 4.3% 优惠
$540 ≥100 吨 6.9% 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$ 580.00
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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