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高强度方钢 - ASTM认证工厂直供

宏基型材有限公司
已认证 定制生产厂家 · 5 年 · 中国 China
可定制 超低价
$580 1-49 吨 基准价
$554 50-99 吨 4.5% 优惠
$542 ≥100 吨 6.6% 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$ 580.00
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高强度方钢技术规范

属性参数描述
产品名称高强度方钢用于结构和工程应用的热轧高强度实心方钢棒
材料牌号Q460 / S460NL / ASTM A572 Gr.50具有国际等效牌号的高强度低合金结构钢
标准合规GB/T 1591, EN 10025-3, ASTM A572符合中国、欧洲和美国结构钢标准
碳 (C)≤ 0.20%控制碳含量以改善焊接性和韧性
锰 (Mn)1.00% - 1.70%提高强度和淬透性
硅 (Si)≤ 0.60%脱氧剂,提高强度和弹性
磷 (P)≤ 0.025%严格控制以防止冷脆性
硫 (S)≤ 0.020%最小化以确保延展性和抗冲击性
钒 (V) / 铌 (Nb)0.02% - 0.15%用于晶粒细化和沉淀强化的微合金元素
抗拉强度550 - 720 MPa符合 GB/T 1591 和 ASTM A572 对高强度等级的要求
屈服强度≥ 460 MPa最小屈服点确保优异的承载能力
伸长率≥ 17%在标距 5.65√So 上测量,表明良好的延展性
尺寸范围10 mm × 10 mm - 250 mm × 250 mm,长度:6 - 12 m可根据要求提供定制尺寸;支持定尺切割服务
表面处理热轧黑皮 / 喷丸 / 涂油可选防锈油涂层或喷丸处理以获得清洁表面
应用重型机械、桥梁、建筑、采矿设备、起重机臂架非常适合需要卓越强度重量比的高载荷结构部件
认证ISO 9001、SGS、BV、工厂测试证书 EN 10204 3.1提供第三方检验和原厂证书
包装六角捆扎,钢带捆扎,防水包裹适合海运的出口包装,每捆带有标识标签
最小起订量5 公吨可协商更小的试订单;每单可接受混合尺寸

高强度方钢 - ASTM认证工厂直供

高强度方钢是一种重要的结构材料,在重型建筑、工业框架制造和精密机械工程中发挥着关键作用。该优质产品经过精心设计,具有卓越的承载能力和尺寸精度,采用精选钢坯,通过受控的热轧或冷拔工艺制造而成。高强度方钢的屈服强度等级显著超过常规低碳钢,为建筑师、工程师和制造商提供了现代基础设施项目所需的结构可靠性。作为拥有 ASTM 认证的工厂直供供应商,我们提供钢厂直发库存,并附有完整的可追溯性文件,确保每一件产品在发往您的工厂之前都符合严格的国际质量标准。

什么是高强度方钢?

高强度方钢是指采用高性能合金钢或微合金钢牌号生产的实心方形截面钢棒,包括 ASTM A572 Grade 50、S355J2 和 Q345B。这些钢棒具有均匀的方形横截面,角部为尖角或圆角,根据具体牌号,其最低屈服强度可达 345–460 MPa,抗拉强度可达 470–630 MPa。几何精度与增强力学性能的结合,使其成为标准碳钢无法满足要求的承载关键应用的理想选择。

高强度方钢技术规格

我们的高强度方钢产品严格按照 ASTM A572/A572M、EN 10025-2 和 GB/T 1591 标准制造。以下是关键技术参数:

高强度方钢供应商

  • 截面尺寸:10mm × 10mm 至 250mm × 250mm
  • 长度范围:6m、9m、12m 标准长度,或按规格定制切割
  • 屈服强度:≥345 MPa(牌号 Q345B / S355JR)至 ≥460 MPa(牌号 S460 / A572 Gr.65)
  • 抗拉强度:470–630 MPa,取决于牌号选择
  • 断后伸长率:≥20%(按 200mm 标距)
  • 密度:7.85 g/cm³(20°C 时)
  • 尺寸公差:边长 ±0.5mm,依据 ASTM A6/A6M
  • 表面处理:可提供热轧黑皮、剥皮或磨光处理
  • 化学成分(典型 Q345B):C ≤0.20%,Mn ≤1.70%,Si ≤0.55%,P ≤0.035%,S ≤0.035%

每批次均经过钢厂检测,包括拉伸试验、−20°C 夏比 V 型缺口冲击试验,以及依据 ASTM A388 的超声波探伤检测,并标配提供材质测试证书(EN 10204 3.1)。

高强度方钢的应用

该材料在要求严苛的工业领域中得到广泛应用。在结构建筑中,它用于加固高层建筑立柱和桥梁支座。在机械制造中,它用作精密加工轴、键和重型框架的原材料。采矿设备、海上平台、起重机臂架和农业机械均受益于高强度方钢相较于传统低碳钢替代品所提供的卓越强度重量比,在不超过 15–20% 的情况下减少整体材料用量,同时不损害结构完整性。

高强度方钢制造商

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与经过认证的工厂直供供应商合作,以高性价比的价格采购优质高强度方钢。我们在多个牌号和尺寸上保持超过5,000公吨的现货库存,能够为全球的标准订单和定制订单提供快速交付。

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高强度方钢工厂

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
Ahmed Al-Rashidi
UAE
2025-02-09
Minor Dimensional Issue Resolved Professionally
Purchased 50 tons of high strength square steel in 75mm × 75mm, S355JR grade for an industrial warehouse framework in Abu Dhabi. Most of the shipment was perfect, but approximately 3 tons had side length measurements at +0.6mm, slightly outside the ±0.5mm tolerance per ASTM A6. We flagged this immediately, and the supplier responded within 12 hours with a replacement shipment at no additional cost, which arrived in 16 days. The resolution was handled professionally and without dispute. Mechanical properties on all material were within spec. Would order again but will request tighter QC on dimensional checks.
用户
Oliver Trent
United Kingdom
2025-03-03
Solid Product, Competitive Against European Mill Prices
We recommended this supplier to one of our fabrication clients who needed 80 tons of S355J2 square bars in 120mm × 120mm for an offshore platform support structure. The material passed all third-party inspection checks — tensile, impact at −20°C, and UT per ASTM A388. Pricing was noticeably lower than comparable European mill offers, even after factoring in shipping to Felixstowe. Documentation was thorough and professional. Minor point: initial quote response took 30 hours rather than the advertised 24, but the technical consultation that followed was genuinely helpful and detailed.
用户
Priya Venkatesh
India
2025-03-25
Good Value for Agricultural Machinery Manufacturing
Ordered 35 tons of Q345B high strength square bars in 40mm × 40mm and 60mm × 60mm for agricultural machinery chassis fabrication. Pricing was very competitive — approximately 8–10% below what local distributors were quoting for equivalent grade material. Mechanical properties met GB/T 1591 requirements, and elongation values were consistently above 21%. The only reason for 4 stars instead of 5 is that the packaging on one bundle was slightly damaged during transit, though the steel itself was unaffected. Overall a strong value proposition for cost-conscious manufacturers like us.
用户
Robert Caldwell
United States
2025-04-16
Third Order This Year — Consistently Reliable Supply
This is our third purchase in 2025, totaling around 200 tons of A572 Gr.50 square bars across 60mm, 100mm, and 200mm sizes. What keeps us coming back is consistency — every shipment matches the previous one in quality, dimensional accuracy, and documentation completeness. We use these bars for column reinforcement and heavy-duty industrial frames across multiple job sites. Lead times have been 14–21 days each time, and the bulk pricing structure makes financial planning straightforward. Already planning our Q3 order. Factory direct really does make a difference in both cost and traceability.
用户
David Hargreaves
Australia
2025-05-08
Strong and Reliable for Underground Mining Equipment Frames
We use high strength square steel bars as structural framing in our underground mining conveyors and support equipment. Purchased 65 tons of Q345B equivalent in 150mm × 150mm sections. The strength-to-weight advantage let us reduce material usage by about 17% compared to the mild steel we were using previously, which matters enormously for equipment that gets transported underground. All documentation was in order — MTCs, chemical analysis, impact test results. Our procurement team appreciated the 24/7 support since we operate across different time zones. Solid product, no complaints.
用户
Markus Brenner
Germany
2025-05-31
Precision Ground Finish Bars for CNC Machining Applications
We required ground finish high strength square steel bars in 50mm × 50mm for precision-machined shaft keys and mechanical frames. Ordered 28 tons of S355JR grade with custom-cut 3m lengths. Surface finish quality was outstanding — no decarburization layer, very tight corners. Tensile strength tested at 526 MPa in our facility, matching the mill certificate exactly. EN 10025-2 compliance fully verified. The free samples they sent beforehand gave us confidence to place the bulk order. Delivery to Hamburg was completed in 22 days with proper packaging on steel stillages.
用户
Sarah Pennington
United Kingdom
2025-06-23
S355J2 Square Bars — Perfect for Crane Boom Fabrication
Sourced 45 tons of S355J2 high strength square steel, 80mm × 80mm, 12m lengths for crane boom manufacturing. The hot-rolled black finish was clean and consistent, making our downstream machining much smoother. Ultrasonic flaw detection reports per ASTM A388 were included with shipment — no internal defects found. Our welding team reported excellent weldability with no cracking issues. The factory direct pricing saved us roughly 12% compared to our previous UK-based stockholder. Technical support was responsive whenever we had questions about chemical composition limits.
用户
James Whitfield
United States
2025-07-08
Excellent Mechanical Properties on A572 Gr.50 Square Bars
We ordered 120 metric tons of ASTM A572 Grade 50 high strength square steel in 100mm × 100mm cross-section for a commercial high-rise project in Houston. Every bar came with EN 10204 3.1 mill test certificates, and our independent lab verified yield strength at 368 MPa — well above the 345 MPa minimum. Charpy impact results at −20°C were consistent across all heats. Dimensional tolerance was within ±0.4mm, tighter than the ±0.5mm spec. Delivery took 18 days door-to-door, which was faster than quoted. Will definitely spec this supplier on our next bridge reinforcement project.

了解供应商

宏基型材有限公司

入驻 Sinoali.com 5 年

所在地:China

Product Introduction

Hongji Profiles Co., Ltd. is a professional manufacturer and supplier specializing in the R&D, production and sales of high-quality steel profiles. With years of experience in the metallurgical industry, we have earned a solid reputation for reliability, precision and customer-centric service, providing global clients with premium steel profile solutions for diverse industrial and architectural needs.

Our core business covers a full range of steel profiles, including angle steel, channel steel, I-beams, H-beams, C-section steel, Z-section steel, flat steel and custom special steel profiles. These products are widely applied in building structures, bridges, transmission towers, industrial machinery, automotive components and shipping. We strictly control material selection, adopting high-quality steel grades such as S235JR, S355JR, SS400, A36 and Q355 series to ensure excellent mechanical properties, durability and corrosion resistance.

Guided by a customer-first philosophy, we have built a comprehensive sales and after-sales network. Our products are exported to Europe, North America, Southeast Asia and Africa, with long-term cooperation with well-known enterprises. Our team provides one-stop services, and we ensure prompt delivery through sufficient inventory and optimized logistics.

Upholding “Quality First, Integrity-based, Innovation-driven, Win-Win Cooperation”, Hongji is committed to becoming a global leader in the steel profile industry, continuously improving quality and service to create a better future with global customers.

 

FAQ

Q: Q: What are the common specifications of your square steel?
A:A: Our standard square steel covers a wide range of sizes, with side lengths from 10mm to 200mm and wall thicknesses from 1.5mm to 20mm. Common models include GB Q235B square steel, EN S235JR square steel, ASTM A36 square steel, and JIS SS400 square steel. We provide both solid square steel and hollow square steel (square tube), and detailed dimension tables can be provided upon request.
Q: Q: What materials are your square steel products made of?
Q: Q: Can you customize square steel with non-standard sizes?
Q: Q: What is the difference between hot-rolled square steel and cold-rolled square steel?
Q: Q: Are your square steel products suitable for outdoor and corrosive environments?
Q: Q: What is the standard length of your square steel, and can it be customized?
可定制 超低价
$580 1-49 吨 基准价
$554 50-99 吨 4.5% 优惠
$542 ≥100 吨 6.6% 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
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可按需提供

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