PROGRESSO
Panoramica del prodotto
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.
Specifiche
Steel Grades: ASTM A106 Gr.B, A53 Gr.B, API 5L Gr.B, 20#, 45#, Q345B, 16Mn, ST37, ST52, 1020, 1045
Standard: ASTM A106, ASTM A53, API5L, GB/T 8163, GB/T 3087, DA 1626, IN 10210, JIS G3454
Outer Diameter (DI): 10.2 mm – 720 mm (1/2″ – 28″)
Spessore del muro (WT): 1.5 mm – 60 mm (SCH 10 – SCH 160, XXS)
Lunghezza: 5.8M, 6M, 11.8M, 12M, or as per customer request (SRL, DRL)
Surface Treatment: Nero (varnished/oiled), Zincato, 3PE/3PP Coated, FBE Coated, Painting
End Finish: Fine semplice, Fine smussata, Threaded End (with coupling)
Tolleranza: DI: ±1%, WT: ±10%, Lunghezza: ±50mm
Process: Laminato a caldo (HR), Cold Drawn (CD), Laminato a freddo (CR)
Caratteristiche principali & Vantaggi
- 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 – grades, 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 giorni
- Certified quality – ISO 9001, API Q1, CE, and third-party inspection available
Applicazioni
- 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
- Scambiatori di calore e condensatori
- Mining and mineral processing equipment
Controllo qualità & Test
Every batch of our carbon steel seamless tubes undergoes strict quality control procedures:
Raw Material Inspection: Chemical composition analysis (spectrometer), dimensional verification
Process Control: In-line monitoring of rolling temperature, wall thickness, and surface quality
Finished Product Testing: Hydrostatic pressure test, ultrasonic flaw detection (UT), eddy current testing (ET), tensile test, impact test, prova di durezza, flattening test, flaring test
Ispezione della superficie: Visual inspection for cracks, folds, scars, and other defects
Documentazione: Certificato di prova del mulino (MTC) per EN 10204 3.1, material traceability records
Confezione & Spedizione
Confezione: Imballaggio standard per l'esportazione – bundles tied with steel strips, hexagonal bundles, pallet o casse di legno, end caps for protection, waterproof wrapping
Marcatura: Steel grade, misurare, numero di calore, standard, logo del produttore (painted or stenciled)
Termini commerciali: FOB, CIF, CFR, EXW, DDP
Pagamento: T/T (30% depositare, 70% prima della spedizione), L/C a vista, Unione occidentale, PayPal (ordini di campioni)
Tempi di consegna: Misure standard in magazzino – 3-7 giorni; Dimensioni personalizzate – 15-30 giorni
MOQ: 1 ton for standard sizes; ordini personalizzati negoziabili
Porto di caricamento: Qingdao, Shangai, Tientsin, o come richiesto
Perché scegliere noi
Con oltre 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 Paesi. 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. Contattaci oggi per un preventivo competitivo!
