面向进口商、经销商与项目买家的中国钢材采购服务

建筑用方钢管 - 厂家直供

中和建材有限公司
已认证 定制生产厂家 · 3 年 · 中国 China
可定制 超低价
$703 1-49 吨 基准价
$672 50-99 吨 4.4% 优惠
$657 ≥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$ 703.00
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建筑工程用方钢管技术规范

PropertyParameterDescription
产品名称建筑工程项目用方钢管等边方形截面的空心结构型材(HSS),用于结构和建筑用途
材质等级Q235B / Q355B / S235JR / S355J2H / ASTM A500 Gr.B / Gr.CQ355B 等效于 S355J2H(EN)和 A572 Gr.50(ASTM);适用于承重建筑应用
标准符合性GB/T 6728, EN 10219, ASTM A500, JIS G3466冷成型和热成型方形空心型材,符合主要国际结构标准
化学成分(C)≤ 0.22%(Q355B)/ ≤ 0.26%(A500 Gr.C)低碳含量确保建筑连接部位具有良好的焊接性和成型性
化学成分(Mn)≤ 1.60%(Q355B)/ ≤ 1.35%(S355J2H)锰可提高结构空心型材的抗拉强度和韧性
化学成分(P / S)P ≤ 0.035% / S ≤ 0.035%控制磷和硫含量可最大限度减少脆性并提高抗冲击性
抗拉强度470–630 MPa(Q355B,依据 GB/T 1591)/ 427–621 MPa(A500 Gr.B)高抗拉强度确保在静态和动态建筑荷载下的结构完整性
屈服强度≥ 355 MPa(Q355B / S355J2H)/ ≥ 315 MPa(A500 Gr.B)最小屈服强度保证结构框架抵抗永久变形
伸长率≥ 20%(Q355B,t ≤ 16 mm)/ ≥ 23%(S235JR)足够的伸长率为抗震和抗冲击建筑设计提供延性
截面尺寸范围20×20 mm – 600×600 mm广泛的尺寸范围涵盖轻型框架、立柱、梁、桁架及重型结构应用
壁厚1.0 mm – 25.0 mm厚度根据荷载要求选择;主要结构构件采用较厚壁厚
长度标准:6 m / 12 m;定制:最长 16 m提供定尺或切割定长选项,以最大限度减少现场浪费和加工成本
表面处理轧制表面(黑材)、热浸镀锌(≥ 45 µm)、涂漆或预涂底漆镀锌处理符合 ASTM A123 / EN ISO 1461 标准,适用于暴露建筑环境中的防腐保护
应用建筑框架、立柱、桁架、脚手架、幕墙支撑、桥梁、工业结构广泛用于住宅、商业及基础设施建设中的主要和次要结构构件
认证ISO 9001:2015、CE 认证(EN 10219)、工厂测试证书(EN 10204 3.1)第三方认证质量管理体系;MTC 可追溯至炉号及化学/力学测试结果
包装钢带捆扎(每捆 1–3 MT);木质垫料;可选防水包装牢固捆扎防止运输损坏;包装可根据集装箱、开顶柜或散装运输进行定制
最小起订量每规格 5 MT / 混装订单 25 MT灵活的最小起订量支持项目采购;25 MT 起可享受整柜(FCL)价格

建筑用方钢管 - 厂家直供

为建筑项目选择合适的方形钢管是一项基础性决策,直接影响结构完整性、项目工期和长期成本效益。作为钢厂直供供应商,我们生产和出口空心方形钢型材,满足住宅、商业和基础设施应用中最为严苛的承载和尺寸要求。我们的方形结构管在严格的质量管理体系下生产,从原始钢坯到成品全程可追溯。无论您的项目需要标准公制规格还是定制切割长度,我们的生产线均保持一致的±10%壁厚公差和精确的角半径,符合 EN 10219、ASTM A500 和 GB/T 6728 标准。凭借数十年积累的冶金专业知识和覆盖 60 多个国家的全球物流网络,我们将经过认证的优质方形钢管直接送达您的项目现场或仓库——省去不必要的中间环节,显著降低采购成本。

建筑项目方形钢管供应商

什么是建筑项目用方形钢管?

建筑用方形钢管是一种四边相等的空心结构型材(HSS),由低碳钢或高强度低合金钢(HSLA)经热轧或冷弯成型工艺制造。这些型材在柱系统、框架、桁架组件、幕墙支撑和机械结构中发挥关键作用,在这些应用中,均匀的多向载荷分布至关重要。与工字钢或槽钢等开口型材相比,其封闭截面几何形状具有更优越的抗扭刚度,使其成为全球建筑师和结构工程师的首选。

建筑用方钢管技术规格

我们的建筑用方钢管提供广泛的尺寸范围,以满足多样化的工程需求。标准尺寸从 20×20 mm 到 400×400 mm,壁厚从 1.5 mm 到 20 mm。材质牌号包括 Q235B、Q355B、S235JR、S355J2H 和 ASTM A500 Grade C,最小屈服强度为 355 MPa,抗拉强度达到 510–680 MPa。表面处理包括黑管(轧制氧化皮)、热浸镀锌(平均镀层 85 µm)和预涂漆选项。

参数 规格
尺寸范围 20×20 mm – 400×400 mm
壁厚 1.5 mm – 20 mm
标准长度 6 m / 12 m(可提供定制长度)
材质牌号 Q235B, Q355B, S235JR, S355J2H, ASTM A500 Gr.C
最小屈服强度 235 MPa – 420 MPa(视牌号而定)
抗拉强度 510 – 680 MPa
适用标准 EN 10219, ASTM A500, GB/T 6728, JIS G3466
表面处理 黑管、热浸镀锌(≥85 µm)、环氧涂层
钢材密度 7.85 g/cm³(20°C 时)
断裂伸长率 ≥22%(S355J2H 依据 EN 10219)

获取建筑用方钢管的竞争力报价

准备为您的下一个建筑项目采购钢厂直供方钢管?我们的团队提供详细的技术咨询、快速打样以及透明的钢厂直供价格,始终优于经销商定价。立即提交您的规格,24小时内即可收到量身定制的报价。

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建筑项目用方钢管批发

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 M.
United States
2025-01-31
Initial shipment had minor labelling inconsistency — resolved satisfactorily
We ordered 50 tonnes of 80×80×6mm Q355B square tubes for resale to fabrication clients. The steel itself tested fine — yield strength confirmed at 370 MPa and wall thickness within tolerance. However, bundle labels on roughly 15% of pieces showed a misprint in the heat number, creating a traceability concern for our clients who require strict ASTM documentation chains. We raised this immediately and the supplier issued corrected certificates within 48 hours and offered a partial credit. Issue was handled professionally. We've since placed a follow-up order with no problems.
用户
Ahmed Al-F.
UAE
2025-02-22
Competitive mill-direct pricing on large-volume order
We purchased 95 tonnes of 180×180×8mm and 250×250×12mm square steel tubes in S355J2H for a logistics warehouse framework in Dubai. Tensile strength reports were in the 540–580 MPa range, consistent with EN 10219 requirements. Mill-direct rates were around 9% lower than our usual regional supplier for equivalent volume. Delivery to Jebel Ali took 24 days. We'd rate it four stars rather than five only because the epoxy-coated option we inquired about had a longer lead time than initially quoted. Technical team was responsive throughout.
用户
Fiona B.
United Kingdom
2025-03-16
Good value on galvanized sections, minor documentation delay
Ordered 35 tonnes of 60×60×4mm HDG square tubes for curtain wall support structures in London. Product quality was solid — coating averaged 87 µm, meeting our EN 10219 spec. Pricing was noticeably better than UK-based stockholders for this volume. The only hiccup was a two-day delay in receiving the final inspection certificate, which slightly compressed our fabrication schedule. The team resolved it quickly once flagged. Overall a positive experience and we'd use them again for the right project.
用户
David H.
United States
2025-04-07
ASTM A500 Grade C compliance fully verified — outstanding quality
We sourced 40 tonnes of 4×4 inch (approximately 100×100mm) square steel tube in ASTM A500 Grade C for column systems on a mid-rise commercial build in Texas. The mill test reports confirmed yield strength at 418 MPa and tensile strength at 612 MPa, both clearly within Grade C parameters. Wall thickness on the 0.25-inch wall sections was spot-on. The 24-hour quote turnaround is real — we had pricing in hand before our next morning meeting. Highly recommended for US-spec procurement.
用户
James W.
Australia
2025-04-29
Smooth repeat procurement process — third order now
This is our third order with this supplier, and the consistency is what keeps us coming back. We regularly purchase 100×100×5mm and 125×125×6mm square HSS in Q235B for residential and light commercial framing across Queensland. Each order has arrived within the quoted lead time, documentation has been clean, and pricing has remained competitive relative to the local market. Free samples before our first order gave us confidence in the surface finish quality. Bulk order discounts are genuinely applied, not just advertised.
用户
Sandra K.
Germany
2025-05-21
Hot-dip galvanized tubes met our corrosion protection spec precisely
Our specification required HDG square tubes with minimum 85 µm coating thickness for an outdoor infrastructure project near Hamburg. We ordered 200×200×10mm sections in S235JR, 60 tonnes total. Coating thickness reports averaged 91 µm, which comfortably exceeded the EN 10219 requirement. The pre-shipment inspection documents were thorough and professionally presented. Customer support answered our technical queries about tensile strength (confirmed 510–540 MPa range) within a few hours. Very competent team.
用户
Rajiv M.
India
2025-06-12
Reliable Q355B supply for large-scale truss assemblies
We've sourced 80×80×5mm and 100×100×6mm Q355B square tubes across two separate shipments totalling around 85 tonnes for industrial truss fabrication in Pune. Yield strength test reports showed 380 MPa average, well above the 355 MPa minimum under GB/T 6728. Corner radii were consistent batch to batch, which matters enormously when welding truss nodes at volume. Lead time was 22 days to Nhava Sheva port. Mill-direct pricing saved us approximately 11% versus our previous distributor. Will continue ordering.
用户
Marcus T.
United Kingdom
2025-06-27
Exceptional dimensional accuracy on S355J2H sections
We ordered 120 tonnes of 150×150×8mm square steel tubes in S355J2H grade for a commercial framework project in Birmingham. Mill certificates confirmed EN 10219 compliance, and our in-house QC measured wall thickness deviations well within ±10% tolerance. Elongation at break consistently exceeded 22%. Delivery to our yard took 18 days from order confirmation — ahead of schedule. The technical team provided detailed MTRs without any chasing. This is exactly the mill-direct experience we've been looking for.

了解供应商

中和建材有限公司

入驻 Sinoali.com 3 年

所在地:China

FAQ

Q: What types of steel pipes do you supply for building?
A:We supply seamless steel pipes, ERW welded pipes, galvanized steel pipes, square and rectangular steel pipes for construction use.
Q: What sizes and dimensions are available?
Q: Do you accept customized length or cutting service?
Q: Do you offer galvanized or anti-corrosion treatment?
Q: What packaging and loading method do you use?
Q: Can your steel pipes be used for structural and plumbing construction?

Product Display

Zhonghe Building Materials Co., Ltd. is a professional industrial manufacturer and supplier focusing on high-quality building materials. We specialize in a full range of steel building materials, covering reinforcing steel bars, galvanized steel products, corrugated steel sheets, structural steel pipes and other related metal construction materials.
 
Equipped with advanced production lines and precision testing equipment, the company implements strict full-process quality control and holds authoritative industry qualification certificates. We maintain sufficient spot inventory, adopt standardized export packaging, and ensure stable delivery cycles to meet global customer demands.
 
Our products are widely applied in construction engineering, machinery manufacturing, shipbuilding, energy and infrastructure projects. Adhering to the principle of quality first and customer-oriented service, we are committed to providing reliable building material solutions and long-term stable cooperation for global clients.

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可定制 超低价
$703 1-49 吨 基准价
$672 50-99 吨 4.4% 优惠
$657 ≥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$ 703.00
分享:
发起订单请求
付款与交货
交期:
随报价一并确认
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