进步
产品概述
Our Carbon Steel Seamless Tube (also known as seamless steel pipe) is manufactured from high-quality carbon steel billets through hot rolling or cold drawing processes. With no welded seam, seamless tubes offer superior strength, pressure resistance, and reliability for high-pressure and high-temperature applications. We supply a comprehensive range of carbon steel seamless tubes in various grades, sizes, and specifications to meet your project requirements.
规格
钢种: ASTM A106 Gr.B, A53 Gr.B, API 5L Gr.B, 20#, 45#, Q345B, 16锰, ST37, ST52, 1020, 1045
标准: ASTM A106, ASTM A53, API 5L, 国标/T 8163, 国标/T 3087, 从 1626, 在 10210, JIS G3454
Outer Diameter (从): 10.2 毫米 – 720 毫米 (1/2″ – 28″)
室壁厚度 (WT): 1.5 毫米 – 60 毫米 (SCH 10 – SCH 160, XXS)
长度: 5.8米, 6米, 11.8米, 12米, 或根据客户要求 (SRL, 日间强化学习)
Surface Treatment: 黑色的 (varnished/oiled), 镀锌, 3PE/3PP Coated, FBE Coated, Painting
End Finish: 平端, 斜端, Threaded End (with coupling)
宽容: 从: ±1%, WT: ±10%, 长度: ±50毫米
过程: 热轧 (人力资源), 冷拔 (光盘), 冷轧 (CR)
主要特点 & 优点
- Superior pressure resistance – no welded seam eliminates weak points
- Excellent mechanical properties – high tensile strength and toughness
- Wide size range – from small diameter precision tubes to large diameter pipes
- Customizable specifications – 成绩, sizes, lengths, and coatings tailored to your needs
- Rigorous quality control – full traceability from raw material to finished product
- Cost-effective – competitive pricing with bulk order discounts
- Fast delivery – large inventory for standard sizes, custom orders in 15-30 天
- Certified quality – 国际标准化组织 9001, API Q1, CE, and third-party inspection available
应用领域
- Oil and gas transmission pipelines
- Petroleum refining and petrochemical plants
- Power plants – boiler tubes, superheater tubes
- Hydraulic and pneumatic systems
- Construction and structural applications
- Mechanical engineering and machinery manufacturing
- Automotive and transportation components
- Water supply and sewage systems
- Heat exchangers and condensers
- Mining and mineral processing equipment
质量控制 & 测试
Every batch of our carbon steel seamless tubes undergoes strict quality control procedures:
Raw Material Inspection: 化学成分分析 (光谱仪), dimensional verification
过程控制: In-line monitoring of rolling temperature, wall thickness, and surface quality
Finished Product Testing: Hydrostatic pressure test, ultrasonic flaw detection (UT), 涡流检测 (ET), 拉伸试验, 冲击试验, 硬度测试, flattening test, flaring test
Surface Inspection: Visual inspection for cracks, folds, scars, and other defects
文档: 工厂测试证书 (MTC) 对于 EN 10204 3.1, material traceability records
包装 & 船运
包装: 标准出口包装 – bundles tied with steel strips, 六方束, 木托盘或板条箱, end caps for protection, 防水包裹
标记: 钢种, 尺寸, 热数, 标准, 制造商标志 (painted or stenciled)
贸易条款: 离岸价格, 到岸价格, 病死率, 出厂前, 顺铂
支付: 电汇 (30% 订金, 70% 发货前), 即期信用证, 西联汇款, 贝宝 (样品订单)
交货时间: 标准尺寸有库存 – 3-7 天; 定制尺寸 – 15-30 天
起订量: 1 ton for standard sizes; 定制订单可协商
装货港: 青岛, 上海, 天津, 或按要求
为什么选择我们
随着超过 15 years of experience in steel manufacturing and export, we are a trusted supplier of carbon steel seamless tubes to customers in more than 50 国家. Our factory is equipped with advanced production lines and testing equipment, ensuring consistent quality and on-time delivery. We offer one-stop service from material selection to after-sales support, and our experienced engineering team can provide technical consultation and customized solutions for your specific applications. 立即联系我们获取有竞争力的报价!
