面向进口商、经销商与项目买家的中国钢材采购服务

大口径钢管 - 厂家直销

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
$820 1-49 吨 基准价
$784 50-99 吨 4.4% 优惠
$766 ≥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

运费合计:面议

商品小计 US$ 820.00
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建筑用大口径钢管技术规范

性能参数说明
产品名称建筑用大口径钢管用于建筑基础、立柱、打桩及土木工程项目的结构钢管
材质等级ASTM A53 Gr.B / A500 Gr.C / EN 10210 S355J2H / GB/T 8162 20#, Q345B国际等效牌号:S355J2H ≈ ASTM A500 Gr.C;Q345B ≈ S355JR;适用于承重结构应用
标准符合性ASTM A53 / A500 / A252;EN 10210 / EN 10219;GB/T 8162 / GB/T 13793;JIS G3444 STK400/490涵盖建筑用无缝及焊接(ERW/SAW/LSAW/SSAW)大口径结构钢管
化学成分(C)≤ 0.26%(A53 Gr.B);≤ 0.23%(S355J2H)低碳含量确保结构制造的可焊性和成形性
化学成分(Mn、Si、P、S)Mn ≤ 1.60%;Si ≤ 0.55%;P ≤ 0.035%;S ≤ 0.035%受控合金元素按 ASTM/EN 标准提高强度、韧性和耐腐蚀性
抗拉强度415–760 MPa(ASTM A53 Gr.B);470–630 MPa(EN S355J2H)高抗拉强度确保在重型建筑荷载和动态力作用下的结构完整性
屈服强度≥ 240 MPa(A53 Gr.B);≥ 355 MPa(S355J2H / Q345B)最小屈服强度保证承重结构抵抗永久变形
伸长率≥ 21%(A53 Gr.B 纵向);≥ 22%(S355J2H)足够的伸长率为建筑应用提供抗震和抗冲击所需的延展性
外径(OD)219 mm – 2,500 mm(8.625 in – 98.4 in)大口径范围涵盖打桩管、结构柱、桥梁支座及地下管线套管
壁厚6 mm – 100 mm (0.236 in – 3.937 in)可提供厚壁选项,适用于高压或深基础打桩应用
长度6 m – 18 m(可定制)标准轧制长度;可根据项目规格和运输要求提供定制切割长度
表面处理黑管(轧制表面)、热浸镀锌、环氧涂层、3LPE/3LPP 防腐涂层根据暴露环境选择表面处理方式:埋地、浸没或地上结构用途
管型无缝(SMLS);ERW;LSAW(UOE/JCOE);SSAW(螺旋焊)大口径首选 LSAW 和 SSAW;关键高应力结构截面采用无缝管
应用建筑基础、钢结构柱、桥梁打桩、港口建设、地下隧道、海上平台广泛应用于全球土木工程、基础设施和重型建筑项目
认证ISO 9001:2015;CE 认证(EN 1090);API 5L;可提供 BV / SGS / TÜV 第三方检验提供完整轧制测试报告(MTR)、静水压测试证书和尺寸检验报告
包装钢带捆扎;装配端盖;木制垫料或钢制托架支撑;适合海运的出口包装包装设计用于防止长途海运或陆运过程中的变形和腐蚀
MOQ每规格 10 公吨(MT);混合规格 50 MT基于项目的采购可协商更低 MOQ;大型建筑合同可提供钢厂直供

大口径钢管 - 厂家直销制造商

建筑用大口径钢管是现代基础设施项目的结构支柱,从高层建筑地基到长跨度桥梁支撑和地下公用设施廊道,都离不开它。作为钢厂直供制造商,我们供应外径从 406 mm(16 英寸)到 3,000 mm(118 英寸)的钢管,每一生产批次都保证一致的尺寸精度和力学性能。我们的工厂在 ISO 9001:2015 质量管理体系下运行,并遵循国际公认标准,包括 ASTM A252、ASTM A500、EN 10219 和 API 5L。每根钢管在发货前都经过严格的水压试验、超声波焊缝检测和尺寸验证,确保承包商和项目工程师收到的材料完全符合其设计规格。无论您的项目需要螺旋焊管、纵向埋弧焊管(LSAW)还是无缝大口径钢管,我们的生产线都能满足从小批量试单到大规模批量采购的订单,交货期最短可至 15 个工作日。

建筑用大口径钢管供应商

什么是建筑用大口径钢管?

建筑用大口径钢管是指外径超过 406 mm(16 英寸)、通过螺旋焊接、LSAW 或无缝工艺制造的空心圆柱形钢截面。这些钢管在结构桩基、沉箱基础、管道输送和建筑柱系统中发挥关键作用。壁厚通常在 6 mm 至 50 mm 之间,钢级涵盖 S235 至 S460 以及 API 5L Grade B 至 X70,提供 235 MPa 至 485 MPa 的屈服强度,以满足不同的承载要求。

建筑用大口径钢管技术规格

我们的建筑用大口径钢管按照精确的工程公差生产。标准外径公差为 ±0.5%(依据 EN 10219),壁厚公差为 ±10%。根据 API 5L,Grade B 的最低抗拉强度达到 415 MPa,X65 达到 565 MPa。表面处理包括热浸镀锌(依据 ISO 1461,镀层最小 85 µm)、3LPE 防腐涂层或裸管出厂表面。可用长度为 6 m 至 18 m,可定尺或随机长度,并可定制切割至 ±5 mm 公差。

参数 规格
外径范围 406 mm – 3,000 mm
壁厚 6 mm – 50 mm
钢级 S235–S460 / API 5L Gr.B–X70 / ASTM A252 Gr.2–Gr.3
抗拉强度 415 MPa – 570 MPa(取决于钢级)
屈服强度 235 MPa – 485 MPa
制造工艺 螺旋焊接(SSAW)、LSAW、无缝
适用标准 ASTM A252 / A500, EN 10219, API 5L, ISO 3183
表面处理 裸管、热浸镀锌、3LPE、环氧涂层
长度 6 m – 18 m(可定制切割)

获取大口径钢管的竞争力报价

与我们的钢厂直供团队合作,为建筑用大口径钢管锁定高性价比的价格,同时不牺牲质量或交付可靠性。立即提交您的项目规格,24 小时内即可收到详细、无义务的报价,并提供完整的材料可追溯性和第三方检验选项。

建筑用大口径钢管制造商

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立即联系我们,24 小时内获取免费报价!

建筑用大口径钢管工厂

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
Robert M.
United States
2025-01-29
Initial coating issue on galvanized pipe — resolved satisfactorily
Ordered 90 tons of 457 mm OD x 9.5 mm wall, ASTM A500 Grade C, hot-dip galvanized pipe for a utility support structure project in Ohio. Upon arrival, coating thickness on approximately 12% of lengths measured below the ISO 1461 minimum 85 µm requirement, ranging 72–80 µm on affected sections. I raised this immediately with the quality team. They responded within one business day, arranged third-party re-inspection, and shipped replacement lengths for the non-conforming sections within 10 days at no additional cost. The resolution process was handled professionally. Confident enough to trial another order, but will request pre-shipment coating inspection next time.
用户
Stefan W.
Germany
2025-02-19
Competitive pricing on EN 10219 pipe, delivery slightly extended
We ordered 180 tons of 660 mm OD x 10 mm wall, S355J2H grade, EN 10219 certified SSAW pipe for architectural column systems in a Frankfurt commercial development. The price per ton was approximately 8% below our previous European supplier for equivalent specification. Mechanical test results — tensile 510 MPa, yield 378 MPa — were within EN 10219 tolerances. Delivery took 22 business days instead of the quoted 15, attributed to port congestion. The mill communicated the delay proactively and adjusted the schedule. Quality justifies continued sourcing; lead time reliability is the one area for improvement.
用户
Ahmed R.
UAE
2025-03-13
Good value for API 5L pipe — minor documentation delay
Purchased 260 tons of 1,067 mm OD x 18 mm wall, API 5L Grade X60, 3LPE coated pipe for a water transmission pipeline project in Abu Dhabi. Pipe quality and dimensional accuracy were solid — wall thickness tolerance held within ±8%, well inside API 5L limits. Pricing was noticeably more competitive than local distributors for this volume. One issue: the ISO 3183 material traceability documentation arrived two days after the shipment departed, which caused a brief customs hold. The team resolved it quickly by courier. Overall good value; documentation coordination could be slightly tighter.
用户
David K.
Australia
2025-04-04
Fifth repeat order — quality and pricing remain consistent
We have now placed five orders totaling over 1,800 tons of large diameter LSAW pipe with this manufacturer, ranging from 610 mm to 1,016 mm OD, wall thicknesses 12–25 mm, ASTM A252 Grade 2 and Grade 3 for marine piling and bridge works across Queensland. Pricing has stayed competitive on bulk volumes, and quality has been uniform across every batch. Mill test reports, hydrostatic test certificates, and weld inspection records are always complete. Delivery schedules have been honored without exception. This is our go-to mill-direct supplier for large diameter structural pipe.
用户
Oliver B.
United Kingdom
2025-04-26
Fast quote turnaround and smooth bulk order process
Submitted RFQ for 320 tons of 762 mm OD x 14 mm wall SSAW pipe, S275 grade, EN 10219 compliant, for a highway utility corridor project. Received a detailed, itemized quotation within 20 hours including freight options and inspection choices — exactly as promised. The procurement coordinator guided us through documentation for UK customs clearance. Hot-dip galvanized finish met ISO 1461 minimum 85 µm coating requirement on all tested samples. Service was professional throughout. Would confidently recommend to other UK contractors sourcing large diameter structural pipe.
用户
James H.
United Kingdom
2025-05-18
Reliable delivery and responsive after-sales support
This was our third procurement from this mill — 150 tons of 508 mm OD seamless pipe, 20 mm wall, ASTM A252 Grade 3, for caisson foundations on a commercial tower in Manchester. The team proactively updated us on production progress and arranged third-party SGS inspection at our request without delay. Pipes arrived with 3LPE anti-corrosion coating applied uniformly. Customer support responded within 2 hours to every query. Lead time of 15 business days was met precisely. Consistent quality across all three orders builds real confidence.
用户
Priya S.
India
2025-06-09
Technically sound supplier — specs matched perfectly
Ordered 200 tons of spiral-welded SSAW pipe, 1,200 mm OD, wall thickness 12 mm, S355 grade per EN 10219, for underground stormwater corridor construction in Pune. The hydrostatic pressure test certificates and dimensional verification reports were thorough and matched our design engineer's requirements exactly. Yield strength averaged 382 MPa across sampled lengths. The technical consultation team helped us select the correct wall thickness for our soil load calculations. Highly recommended for technically demanding civil projects.
用户
Marcus T.
United States
2025-06-24
Exceptional LSAW pipe quality for bridge foundation piling
We sourced 480 metric tons of LSAW large diameter pipe, 914 mm OD x 16 mm wall thickness, Grade API 5L X52, for a major river bridge foundation project. Mill test certificates confirmed tensile strength at 468 MPa, fully compliant with API 5L requirements. Dimensional tolerances were within ±0.4%, tighter than the EN 10219 spec. Ultrasonic weld inspection reports were included without extra charge. Delivery completed in 18 business days to our Houston yard. Will absolutely reorder for our next piling contract.

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
$820 1-49 吨 基准价
$784 50-99 吨 4.4% 优惠
$766 ≥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$ 820.00
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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