Product Specification
| Parameter | Details |
| Shape | Round |
| Surface Treatment | Bared, Black Painted, Galvanized, Oiled or to your requirements |
| Out diameter | 10mm-720mm, other sizes negotiable |
| Wall Thickness | 1mm-35mm, other sizes negotiable |
| Length | Up to 16m |
| Tolerance of OD | ±0.15mm |
| Steel material | 20#, Q355, Q390, Q420, Q460, Q500, Q620, Q690, 35#, 45#, 40Cr, 12CrMo, 30CrMO, 35CrMo, 42CrMo, S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H, S275NH, S275NLH, S355NH, S355NLH, S420NH, S420NLH, S460NH, S460NH, S460NLH, BJ780, BJ890, YG550, YGS70, YGS100, YGS100BJ, YGS130, YGS150, YG960, etc. |
| Technical Standard | GB/T 8162-2018, EN 10210 |
| Technique | Cold draw |
| Payments Term | T/T or L/C |
| MOQ | 1 ton |
| Delivery condition | Annealed, Normalized, Tempered and quenched (Q&T) |
Product Description
Seamless round pipe is a steel tube with a circular cross-section, produced by hot rolling, hot expanding, or cold drawing. With no welds and a uniform metal structure, it offers excellent strength, high pressure resistance, and superior mechanical properties. It is widely used in industries such as petroleum, chemical, machinery, construction, and hydraulics — ideal for transporting fluids and gases.
We offer seamless round pipes in carbon steel and stainless steel, with a wide range of sizes and high dimensional accuracy. Surface treatments such as painting, oiling, shot blasting, and pickling are available upon request.
Application
| Oil & Gas | Oil tubing, casing, gas pipelines |
| Boiler & Heat Exchangers | High-pressure boiler tubes, heat exchanger lines |
| Machinery | Shafts, hydraulic cylinders, machine frames |
| Construction | Steel structures, bridge elements, scaffolding |
| Automotive & Shipbuilding | Reactor pipelines, corrosive fluid transport |
Available Mold
Customization
With in-house tooling, material sourcing, and technical support, we offer flexible customization to meet your specific needs:
- Dimension Customization: Non-standard diameter, thickness, and length
- Material Options: Carbon steel, stainless steel
- Processing Services: Cutting, logo marking
- Surface Treatment: Painting, shot blasting, oiling, galvanizing
- Marking & Packaging: Custom logo, labels, and packaging options
We support drawing-based production, small batch trial orders, and fast sample delivery to help your projects start quickly.
Packaging & Delivery
We provide professional packaging and flexible delivery options based on your product and shipping needs:
- Packaging Methods:
- Steel-strapped bundles with labels
- Plastic wrap + woven fabric cover
- Export-grade wooden cases or pallets
- Plastic end caps for tube protection
- Delivery Options:
- Sea freight, truck transport, or rail shipment
- Common ports:
- Shanghai, Changsha
- Lead Time:
- Standard sizes: 7–15 days
- Custom orders: 30–45 days
Export documents such as CO, CQ, and third-party inspection reports are available upon request.
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FAQ Section
Q1:What’s the difference between seamless round pipes and welded round pipes?
A1:Seamless round pipes are formed without welds using hot rolling or cold drawing techniques, providing higher strength and pressure resistance compared to welded pipes.
Q2:What’s the MOQ?
A2:The minimum order quantity is usually 1 ton for standard sizes; special requirements can be negotiated.
Q3:Do you support third-party inspections?
A3:Yes, third-party inspections like SGS or BV can be arranged. Costs can be covered by the buyer or shared by both parties.
Q4:What’s the delivery time?
A4:Standard sizes are usually delivered within 7–15 days; customized products depend on processing requirements.
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