English 
Español 
Français 
Deutsch 
Português (Brasil) 
Русский 
العربية 
直缝焊接钢管 - 高品质结构碳钢钢管
快马钢铁有限公司
已认证
定制生产厂家
·
7 年
·
China
China
可定制
超低价
$610
1-49 吨
基准价
$583
50-99 吨
4.4% 优惠
$570
≥100 吨
6.6% 优惠
价格有效期：随行就市
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
API 5l 焊接钢管
$570 - $610
1 吨 （最小起订量）
ASTM a53焊接钢管
$670 - $720
1 吨 （最小起订量）
焊接钢管制造商
$605 - $650
1 吨 （最小起订量）
碳钢焊接钢管
$580 - $620
1 吨 （最小起订量）
焊接钢管
$610 - $655
1 吨 （最小起订量）
直缝焊接钢管
$570 - $610
1 吨 （最小起订量）
焊接钢管供应商
$580 - $620
1 吨 （最小起订量）
API 5L X42 螺旋管
$580 - $620
1 吨 （最小起订量）
API 5L 螺旋管
$575 - $620
1 吨 （最小起订量）
产品详情
直缝焊接钢管技术规范
| 属性 | 参数 | 描述 |
|---|---|---|
| 产品名称 | 直缝焊接钢管 | 纵向焊缝焊接碳钢管 |
| 材质等级 | Q235B / Q345B / ASTM A53 Gr.B / API 5L Gr.B | 多种国际等级对应 |
| 制造工艺 | ERW / LSAW / SSAW | 电阻焊、纵向埋弧焊 |
| 标准符合 | ASTM A53, API 5L, EN 10219, GB/T 13793 | 符合主要国际焊接钢管标准 |
| 碳 (C) | ≤0.26% | 碳含量符合 ASTM A53 Gr.B |
| 锰 (Mn) | ≤1.35% | 提高强度和淬透性 |
| 磷 (P) | ≤0.035% | 控制以改善延展性 |
| 硫 (S) | ≤0.035% | 低硫以提高焊接性 |
| 硅 (Si) | ≤0.35% | 脱氧剂和强度增强剂 |
| 抗拉强度 | ≥415 MPa | 最低抗拉强度符合 ASTM A53 Gr.B |
| 屈服强度 | ≥240 MPa | 最低屈服强度 |
| 伸长率 | ≥23% | 50mm 标距内的延展性 |
| 外径范围 | 21.3mm - 1420mm | 可选外径规格 |
| 壁厚 | 1.0mm - 40mm | 标准和定制壁厚 |
| 长度 | 5.8m - 12m 或定制 | 标准和定制切割长度 |
| 表面处理 | 黑管、镀锌、防腐涂层、涂油 | 提供多种表面处理选项 |
| 应用 | 结构、供水、石油和天然气、建筑 | 典型应用行业 |
| 认证 | EN 10204 3.1, ISO 9001, API 5L | 提供质量认证 |
| 包装 | 用钢带捆扎，两端加塑料帽 | 标准出口包装 |
| MOQ | 5吨 | 最小起订量 |
直缝焊接钢管 - 高品质结构碳钢钢管
直缝焊接钢管是一种经济高效且可靠的管材产品，通过将扁平钢带或钢板成型为圆柱形，并采用高频电阻焊（ERW）或埋弧焊（SAW）将接缝连接而制成。这种碳钢管在结构框架、流体输送和机械工程中发挥着关键作用，具有一致的尺寸精度和可靠的机械性能。无论您是采购建筑项目、管道基础设施还是工业制造用管，我们的钢厂直供直缝焊接钢管均符合严格的国际规范，确保长期使用可靠性。
什么是直缝焊接钢管？
直缝焊接钢管是指沿其长度方向纵向焊接一条直缝而生产的钢管，以区别于螺旋焊接钢管。制造过程包括开卷钢卷或钢板，将其冷弯成圆形或方形截面，并使用ERW或LSAW（纵向埋弧焊）技术焊接边缘。该工艺生产的管材具有均匀的壁厚、光滑的焊缝和严格的尺寸公差，符合ASTM A53/A53M、EN 10219和GB/T 13793标准。
直缝焊接钢管技术规格
我们的结构碳钢管按照国际公认标准制造，确保每个生产批次的质量一致。以下是关键参数：
| 参数 | 规格 |
|---|---|
| 标准 | ASTM A53 Grade B, ASTM A500, EN 10219-1:2006, GB/T 13793-2016 |
| 外径 | 21.3 mm – 660 mm (1/2″ – 26″) |
| 壁厚 | 1.0 mm – 25.0 mm |
| 长度 | 5.8 m, 6.0 m, 11.8 m, 12.0 m，或定制切割 |
| 屈服强度（最小值） | 240 MPa (ASTM A53 Gr. B) |
| 抗拉强度（最小值） | 415 MPa (ASTM A53 Gr. B) |
| 碳含量 | ≤ 0.30%（按 ASTM A53） |
| 焊接类型 | ERW / LSAW |
| 表面处理 | 黑管、涂油、镀锌或喷漆 |
直缝焊接钢管的主要应用
- 结构建筑：建筑立柱、桁架、脚手架和温室框架，这些场合对坚固的结构完整性至关重要。
- 水与燃气输送：用于市政供水和天然气输送的低至中压管道，符合 ASTM A53 要求。
- 机械工程：机器底座、输送机支架和汽车底盘部件，需要精确的尺寸控制。
- 围栏与基础设施：公路护栏、标志杆和周边围栏，需要耐候碳钢管材。
为什么选择我们的焊接碳钢管材
我们供应的每一根直缝焊接钢管都经过 100% 无损焊缝检测——包括超声波和涡流检测——以确保焊缝完好。我们的生产线配备自动外径和壁厚监测，将公差控制在规定尺寸的 ±0.5% 以内。我们持有 ISO 9001:2015 认证，并在每次发货时提供 EN 10204 Type 3.1 工厂测试证书，记录化学成分、力学性能和水压试验结果。
常见问题
最小起订量（MOQ）是多少？
我们的标准最小起订量为每个规格5公吨。对于组合多个尺寸的拼柜订单，我们接受10公吨的组合最低起订量。
你们提供材质检测证书吗？
是的。每笔订单均随附EN 10204 Type 3.1工厂检测证书，涵盖化学成分分析、抗拉和屈服强度结果以及静水压试验数据。
典型的交货时间是多久？
标准尺寸的现货商品在7–10个工作日内发货。定制生产的直缝焊接钢管订单通常需要20–30天，具体取决于数量和规格。
你们可以按定制尺寸切割吗？
当然可以。我们提供精密切割和坡口端面加工服务。可根据要求提供1.0 m至18.0 m的定制长度，公差控制在±5 mm。
获取直缝焊接钢管的竞争力报价
准备好以工厂竞争力价格采购优质直缝焊接钢管了吗？立即联系我们的销售团队，提供您所需的规格——包括直径、壁厚、长度和数量——并在24小时内收到详细报价。我们支持FOB、CFR和CIF贸易条款，覆盖全球主要港口。
评分与评价
Wei Chen
Singapore
2025-09-04
Acceptable Welded Pipe Quality with Packaging Issue Resolved
Ordered 10 tons of ERW pipe, 219.1mm OD × 8.0mm wall, mixed lengths of 6m and 12m, for resale to a construction client in Indonesia. The mechanical properties and dimensional accuracy were within specification — tensile strength at 421 MPa and OD tolerance at ±0.4%. However, on arrival at Singapore port, we found that roughly 15% of the 12-meter pipes had damaged end caps and some minor denting at the pipe ends from insufficient bundle padding. We raised this with the sales team and they provided a credit note within 48 hours and confirmed improved packaging for future orders. The material quality is acceptable but packaging for longer lengths needs attention. Will trial one more order to see if the improvement holds.
Chris Martin
Canada
2025-09-21
Reliable A53 Grade B Pipe for Gas Distribution Network
This was our second order — 22 tons of ASTM A53 Grade B ERW pipe, 114.3mm OD × 5.0mm wall, for a natural gas distribution line expansion in Alberta. The hydrostatic pressure test certificates and full chemical analysis reports were ready before we even requested them, which saved us time with the project owner's document submission. Carbon content was at 0.24%, well within the ≤0.30% limit. Weld seam on cross-section samples showed full penetration with no porosity. Delivered to Vancouver port within 10 business days — matched the stock-item delivery promise exactly. MOQ of 5 tons per size worked well for our mixed-spec requirements across this project.
William Taylor
Australia
2025-10-13
Good Value Welded Steel Pipe for Offshore Support Structures
Ordered 18 tons of LSAW pipe, 323.9mm OD × 9.5mm wall, for fabricating support frames on a coastal marine facility near Darwin. Type 3.1 mill certificates included hydrostatic test data and eddy current inspection records, which our certifying authority accepted without additional testing. Material yield strength came in at 261 MPa, comfortably above the 240 MPa minimum. One logistical note: the shipping documents arrived one day after the vessel departed, causing a minor customs delay at the port. The team corrected this quickly and the delay was only two days total. Material itself is solid and we would order again.
Carlos Silva
Brazil
2025-10-30
Superior ERW Pipe for Fencing and Highway Guardrail Project
Sourced 35 tons of black-finish ERW straight welded pipe, 60.3mm OD × 3.2mm wall, 6-meter lengths, for highway guardrail and perimeter fencing installation across a state road project in São Paulo. GB/T 13793-2016 compliance documentation was provided alongside ASTM A53 equivalent data sheets, which satisfied our local project engineer. Wall thickness measured consistently at 3.18–3.22mm across random samples from five different bundles — very tight production control. Compared pricing against two Brazilian domestic distributors and saved approximately 11% per ton landed cost. Delivery to Santos port in 22 days. Second order already in negotiation.
Ahmed Al-Hassan
UAE
2025-11-18
Premium Structural Pipe for Greenhouse Framework Supply
We placed an order for 20 tons of straight welded steel pipe in 48.3mm OD × 2.5mm wall, painted finish, for large-scale agricultural greenhouse structures across three farm sites in Al Ain. The painted coating was uniform and adhered well — no peeling observed after outdoor exposure during installation. EN 10219-1 compliance was confirmed on the mill certificate. Delivery to Jebel Ali port took 9 days from shipment dispatch, which is very fast for this volume. The sales team provided a detailed quotation within 6 hours of our inquiry, including FOB and CIF breakdowns. Highly reliable supplier for repeat procurement.
Hans Mueller
Germany
2025-12-06
Solid Welded Carbon Steel Tubing for Machine Bases
Purchased 12 tons of ERW structural carbon steel tubing, 88.9mm OD × 4.0mm wall, in custom-cut 2.4-meter lengths for conveyor support frames. Mechanical properties were on target and the bevel-end preparation was clean with consistent angles. Cutting length tolerance was ±4mm, better than the ±5mm stated. Minor point: two bundles had surface rust spots on the oiled finish, likely from condensation during sea transit. The sales team responded within a few hours and offered a partial credit, which was fair. Overall the material quality is good and pricing was competitive versus European domestic suppliers.
James Wilson
United Kingdom
2025-12-22
Outstanding LSAW Pipe Quality for Pipeline Infrastructure
We sourced 45 tons of LSAW straight welded steel pipe, 457mm OD × 12.7mm wall, for a municipal water distribution upgrade in the Midlands. EN 10204 Type 3.1 mill certificates were supplied covering full chemical analysis, hydrostatic test results, and tensile data — tensile strength recorded at 438 MPa against the 415 MPa minimum. Dimensional check on arrival showed OD tolerance within ±0.3%, tighter than the ±0.5% promised. The galvanized surface finish was uniform with no bare patches. Delivery to Felixstowe took 18 days from order confirmation, well within the 20–30 day window for custom production. Will be placing a follow-up order for Phase 2.
Michael Johnson
United States
2026-01-07
Excellent ERW Pipe for Commercial Building Project
Ordered 28 tons of ASTM A53 Grade B straight welded pipe, OD 168.3mm with 6.0mm wall thickness in 6-meter lengths for a multi-story commercial building frame. Mill test certificates confirmed yield strength at 268 MPa and carbon content at 0.26%, fully within spec. Ultrasonic weld inspection reports were included without us even asking. Shipment arrived at Houston port in 14 days under CIF terms, two days ahead of the quoted window. We compared quotes from four suppliers and this was the most competitive on a per-ton basis. Third order with this mill and quality has been consistent every time.
了解供应商
可定制
超低价
$610
1-49 吨
基准价
$583
50-99 吨
4.4% 优惠
$570
≥100 吨
6.6% 优惠
价格有效期：随行就市
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
