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Q235B钢坯 - 用于锻造和轧制的热轧碳钢钢坯

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
$470 1-49 吨 基准价
$450 50-99 吨 4.3% 优惠
$440 ≥100 吨 6.4% 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$ 470.00
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

Q235B钢坯技术规格

属性参数描述
产品名称Q235B Steel Billet用于一般建筑结构的碳素结构钢坯
材料牌号Q235B / GB/T 700 / ASTM A36 / EN S235JR国际等效牌号
标准符合性GB/T 700, ASTM A36, EN 10025-2符合主要国际标准
碳 (C)≤0.20%碳含量用于保证强度和可焊性
锰 (Mn)0.30-0.70%提高淬透性和强度
硅 (Si)≤0.35%脱氧剂和强化剂
磷 (P)≤0.045%控制以保证延展性
硫 (S)≤0.050%低硫以保证可焊性
抗拉强度370-500 MPa按 GB/T 700 的抗拉强度范围
屈服强度≥235 MPa厚度 ≤16mm 时的最小屈服强度
伸长率≥26%50mm 标距下的延展性
钢坯尺寸范围100×100mm - 300×300mm标准方坯尺寸
长度6m - 12m 或定制可提供标准长度和定制长度
制造工艺连铸现代连铸技术
应用螺纹钢生产、线材、结构钢典型应用行业
表面质量光滑,无裂纹或缺陷标准表面检验
认证ISO 9001, Mill Test Certificate提供的质量认证
包装钢带捆扎,防水覆盖标准出口包装
MOQ25 tons最小起订量

Q235B钢坯 - 用于锻造和轧制的热轧碳钢钢坯

Q235B钢坯是一种基础碳素结构钢产品,广泛应用于建筑、制造和工业领域的金属成型加工。作为热轧半成品钢材,Q235B钢坯是后续轧制、锻造和挤压工艺的重要原材料。该材料牌号为制造商提供了一种兼具足够机械强度和优异成型性的经济高效解决方案,使其成为需要可靠原料进行线材生产、螺纹钢制造和结构件加工的制造商的首选。

什么是Q235B钢坯?

Q235B钢坯是按照GB/T 700-2006中国国家标准制造的热轧碳素钢半成品。牌号“Q235”表示最小屈服强度为235 MPa,而“B”后缀表示对化学成分和室温冲击试验的特定质量要求。这些钢坯通常具有100mm至165mm的方形或矩形横截面,长度根据客户规格和生产能力从6米到12米不等。

Q235B钢坯技术规格

Q235B钢坯的化学成分严格遵循GB/T 700-2006标准,碳含量限制在0.12-0.20%,锰含量为0.30-0.70%,硅含量不超过0.30%,磷含量最高0.045%,硫含量限制在最高0.050%。力学性能包括抗拉强度370-500 MPa,屈服强度最低235 MPa,厚度≤16mm的试样断后伸长率最低26%。该材料在20°C时的密度为7.85 g/cm³,在大多数应用场景下表现出优异的焊接性,无需预热。

制造工艺与质量控制

Q235B钢坯采用连铸工艺生产,将熔融钢水浇注入水冷铜结晶器,形成凝固的铸坯。这些铸坯经过控制冷却,随后使用自动化火焰切割系统切割成指定长度。我们的生产设施实施全面的质量控制措施,包括用于化学成分验证的光谱分析、用于内部缺陷检测的超声波检测,以及确保符合横截面尺寸±3mm规定公差要求的尺寸检验。

主要应用与行业用途

这些碳钢钢坯广泛应用于线材轧机,用于生产建筑钢筋、焊条和低碳线材产品。钢轧设施使用Q235B钢坯作为原料,制造包括角钢、槽钢和工字钢在内的结构型材。锻造作业使用这些钢坯制造汽车零部件、紧固件和通用工程零件。建筑行业依赖由Q235B钢坯衍生的产品,用于建筑框架、桥梁构件以及需要中等强度水平并结合经济定价的基础设施开发项目。

为什么选择我们的Q235B钢坯

我们的钢厂直供供应链消除了中间商加价,提供具有工厂竞争力的价格,同时保持优质等级质量标准。每个生产批次都经过严格的测试协议,并按照 EN 10204 3.1 要求提供完整的材料测试证书。我们在多个横截面尺寸上保持充足的库存水平,确保快速订单履行,标准规格的典型交货时间为 15-25 天。我们的技术支持团队提供材料选择、加工建议和特定应用指导的全面协助,背后有超过二十年的钢铁制造经验支持。

Q235B钢坯供应商

常见问题

Q235B钢坯的最小起订量是多少?

我们的标准最小起订量为每种规格25公吨,不过我们也为符合条件的新客户承接10吨的较小试订单。对于组合多个横截面尺寸的订单,可提供混装集装箱装载,但需视物流优化和每个尺寸的最低重量要求而定。

Q235B钢坯批发

你们会随货提供材料测试证书吗?

是的,我们为每批货物提供符合 EN 10204 3.1 标准的完整材料测试证书。这些证书包括完整的化学成分分析、力学性能测试结果、炉号可追溯性以及生产日期文件。应客户要求,还可通过 SGS、BV 或其他国际认可机构安排额外的第三方检验服务。

标准尺寸的典型交货时间是多少?

对于我们常规备货的尺寸(130mm、150mm 和 165mm 方坯),交货通常在订单确认并收到定金后 15-20 天内完成。定制横截面或非标准长度需要 25-30 天的生产时间,因为这些需要专用的连铸排产。对于紧急需求,可以安排加急生产,并调整价格以配合排期优先处理。

你们能否将钢坯切割成定制长度?

当然可以,我们提供精密切割服务,可按客户指定长度从 3 米到 12 米进行切割,公差为 ±50mm。切割使用自动化 CNC 火焰切割设备进行,确保端面平直、垂直,适合直接加工。超出标准范围的特殊长度要求,将根据搬运能力和运输限制进行单独评估。

Q235B steel billet China

获取 Q235B 钢坯的竞争力报价

今天就提供您的所需规格,包括横截面尺寸、长度偏好、数量要求和交货目的地,以获取定制报价。我们的销售工程团队将在 24 小时内回复,提供详细定价、技术数据表以及根据您的运营需求量身定制的物流解决方案。立即联系我们,利用我们的钢厂直供优势,为您的制造业务确保优质 Q235B 钢坯的可靠供应。

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
Carlos Silva
Brazil
2025-09-13
Premium Billets for Channel Production
We compared quotes from 5 Chinese suppliers before selecting this manufacturer for 28 tons of 165mm Q235B billets. Their technical team provided detailed rolling recommendations specific to our channel production line. Carbon content at 0.16% and silicon at 0.24% were optimal for our process parameters. Surface quality was exceptional with minimal decarburization. Delivered to Santos port in 21 days with complete Portuguese-translated documentation. The density of 7.85 g/cm³ matched specifications perfectly for our yield calculations.
用户
Wei Chen
Singapore
2025-09-29
Acceptable Quality with Packaging Issues
Ordered 15 tons of 150mm billets for re-export to Southeast Asian markets. Material quality met GB/T 700-2006 standards with proper mechanical properties. However, packaging had water damage on the steel strapping for 4 bundles during sea freight to Singapore port. Supplier responded quickly and provided documentation for insurance claim. After resolution, the billets were suitable for our customers' forging applications. Communication was professional throughout the issue resolution process.
用户
Chris Martin
Canada
2025-10-15
Solid Quality for Wire Rod Production
Purchased 22 tons of 130mm Q235B billets for our wire drawing operations in Ontario. Material processed smoothly through our rolling mill with uniform hardness distribution. Spectroscopic analysis matched the provided certificates accurately. Lead time was 26 days, acceptable for our production schedule. One minor issue: two billets had slight edge cracks detected during inspection, but supplier immediately offered replacement credit. Would order again for standard applications.
用户
Ahmed Al-Hassan
UAE
2025-11-02
Perfect Material for Bridge Project
This is our fourth order for infrastructure projects in Dubai. Ordered 35 tons of mixed sizes: 20 tons of 150mm and 15 tons of 130mm square billets for I-beam production. Factory maintained consistent quality across both dimensions with identical chemical composition batches. Yield strength averaged 242 MPa across all test samples. The mill-direct pricing saved us approximately $45 per ton compared to trading companies. Delivery to Jebel Ali port completed in 19 days.
用户
William Taylor
Australia
2025-11-20
Reliable Q235B for Shipbuilding Applications
We ordered 18 tons of 150mm billets cut to custom 8-meter lengths for our ship component forging operations. The CNC flame cutting was precise with perpendicular end faces requiring no additional preparation. Phosphorus content at 0.038% and sulfur at 0.042% confirmed excellent weldability for our marine-grade requirements. Third-party SGS inspection arranged at their facility showed full compliance. Shipped to Perth in 24 days with complete documentation package.
用户
Hans Mueller
Germany
2025-12-08
Good Value Carbon Steel Billets
Ordered 20 tons of 165mm square billets for construction rebar production. Price was 8% lower than our regular European supplier while maintaining acceptable quality standards. Tensile strength tested at 485 MPa, well within the 370-500 MPa range. Surface finish had minor scale marks on 3 billets but did not affect our rolling process. Delivery took 28 days, slightly longer than quoted 25 days. Overall good value for the price point.
用户
James Wilson
United Kingdom
2025-12-23
Outstanding Service and Documentation
Purchased 25 tons of 130mm Q235B billets for structural angle production. Sales team responded within 12 hours with detailed technical data sheets and competitive pricing. EN 10204 3.1 certificates were comprehensive, including heat number traceability and complete mechanical property test results showing 245 MPa yield strength and 28% elongation. Material arrived at Southampton port in 22 days with proper anti-corrosion packaging. Technical support provided excellent rolling parameter recommendations for our mill setup.
用户
Michael Johnson
United States
2026-01-07
Excellent Q235B Billets for Automotive Components
Ordered 30 tons of 150mm square Q235B billets for our automotive fastener production line. Chemical composition analysis showed carbon at 0.18% and manganese at 0.65%, perfectly within GB/T 700-2006 specifications. Ultrasonic testing certificates confirmed zero internal defects. The billets forged beautifully with consistent grain structure throughout. Delivered in 18 days to our Michigan facility. Our quality team verified dimensional tolerances at ±2mm, better than the standard ±3mm. This is our second order this quarter.

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

可定制 超低价
$470 1-49 吨 基准价
$450 50-99 吨 4.3% 优惠
$440 ≥100 吨 6.4% 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$ 470.00
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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