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Seamless Tubes require high precision size tolerances. These are primarily utilized in ships, marine platforms, bullet trains, and aerospace equipment. Applications include fine dense card sets for instrument tubes, hydraulic brake tubes, oil well control pipelines, chemical injection pipes, and electric heating steam tubes.
Our advanced bright annealing process uses a closed furnace protected by argon and nitrogen. This ensures the surface is not exposed to oxygen, preventing oxide skin and keeping both the interior and exterior of the tube bright and clean. Accurate temperature control (±5ºC) ensures even annealing and optimal mechanical performance for bending and reaming.
Quality is ensured through an automatic heat piercing production line, temperature-controlled natural gas annealing furnaces, and precision cold-rolled equipment. Inspection capabilities include direct-reading spectrometers, ultrasonic fault detectors, eddy current flaw detectors, and hydrostatic test machines.
Austenitic Stainless Steel: 304, 304L, 304H, 316L, 316Ti, 316H, 321, 321H, 317L, 347, 347H, 310S, 309S.
Super Austenitic: 904L (N08904), S31254, S254Mo, N08367 (6Mo), 253Ma.
Super Duplex Steel: S31803, S32205, S32750 (2507), S32760, S32304.
Nickel Alloy Steel: Alloy B/B2/B3, Alloy C4/C22/C276/C2000, Alloy 600/601/625, Alloy 800/800H/825, Monel 400/K500.
Titanium & Alloy: GR1, GR2, GR3, GR4, GR5, GR7, GR9, GR11, GR12.
| Product Name | Size Range | Max Length | Processing | Status | Standard | Surface |
|---|---|---|---|---|---|---|
| SEAMLESS TUBE | OD: 2-38.1mm T.W: 0.2~3mm |
Max 38M | Cold-rolled / Cold Drawn | Annealing / Bright Annealing | ASTM B622, B829, SB163, SB165, SB167, SB407, SB423, SB444, SB677, SB729 | Pickling, Bright, Passivation, Polishing |









✔ Cost-Effective Solutions: Professional services designed to give you a competitive edge in the market.
✔ One-Stop Procurement: Integrated solutions for stainless steel pipe procurement and transportation.
✔ Industry Expertise: 15 years of dedicated experience in production and sales service.
✔ Quality & Value: Secure partnership based on product excellence and financial strength.
📹 Video Mill Introduction: Visit our factory via real-time video call to witness our scale and strength without travel costs.
🛠️ Remote Technical Guidance: Immediate access to engineers for technical challenges or material standard matching.
🔍 Third-Party Inspection: We cooperate fully with agencies like SGS, TUV, BV, DNV-GL, LR, and ABS.
🚚 Seamless Logistics: Door-to-door shipment services to simplify your supply chain process.
Flowtera Pipe