Seamless Pipe
No welding seam, offering the highest pressure resistance and uniform strength. Ideal for high-pressure fluid and oil & gas.
ERW & Welded Pipe
Electric Resistance Welded (ERW). Cost-effective with excellent dimensional accuracy for structural and water lines.
Cold Drawn Pipe
Tighter tolerances, superior surface finish, and higher mechanical strength. Perfect for precision machinery.
- Cold Drawn Seamless Pipe
- Cold Drawn Tube
- Stainless Capillary Tubes
- Cold Drawn Galvanized Pipe
Hot Rolled Pipe
Manufactured at high temperatures for excellent structural integrity in larger diameters. Used for heavy frameworks.
- Hot Rolled Seamless Tube
- Hot Rolled Welded Steel Pipe
- Carbon Steel Pipe
- Black Steel Pipe
Steel Pipe Manufacturing Process Comparison
Choose the right process based on pressure requirements, dimensional accuracy, and cost.
| Manufacturing Process | Pressure & Strength | Dimensional Accuracy | Cost-Effectiveness | Hot-Selling Sizes |
|---|---|---|---|---|
| Seamless | Highest (No weld seam) | Good | Low (Higher cost) | OD 10.3 – 610mm (Thickness 2 – 50mm) |
| ERW & Welded | Good | High | High (Cost-effective) | OD 21.3 – 508mm (Wall 1.5 – 16mm) |
| Cold Drawn | High (Work hardened) | Excellent (Tight tolerances) | Medium | OD 6 – 168mm (Tight Tolerance) |
| Hot Rolled | High | Standard | High | OD 114 – 914mm (Thickness > 10mm) |
Why Buy Steel Pipes From Glory Steel?
✓ Strict Material Traceability
All our seamless and welded pipes undergo 100% hydrostatic testing and come with Mill Test Certificates (MTC) to guarantee performance under high pressure.
✓ Advanced Process Control
From ERW welding to cold drawing, our advanced machinery ensures tight dimensional tolerances and excellent surface finishes for your critical engineering projects.
✓ Factory-Direct Pricing
No middlemen. Directly from our 50,000㎡ factory to your warehouse. We ensure stable supply for large-volume orders and lower your procurement costs.
Not Sure How To Choose?
Have Questions About Your Order?
Here are the answers to the most common inquiries from our global buyers.
What is your Minimum Order Quantity (MOQ)?
We support flexible MOQs to help you test the market. For standard sizes, a trial order of 1x20GP is acceptable. For customized sizes and special materials, the MOQ is typically 10 tons. Please contact us for exact details.
What is your delivery time?
For standard sizes in stock, we can ship within 7-15 days. For customized orders or large volume projects, the lead time is typically 15-25 days after order confirmation. We will arrange the fastest shipping from Tianjin or Qingdao port.
Can you provide Mill Test Certificates (MTC) and support third-party inspection?
Absolutely. All our pipes come with EN 10204 3.1 Mill Test Certificates. We also fully support SGS, BV, or any custom inspections before loading. Quality is our top priority.
How do you pack the pipes for sea transportation?
We use standard seaworthy packing. Pipes are bundled with steel strips, and plastic end caps are provided to protect the pipe threads/ends. We can also use wooden pallets or customized packaging according to your requirements.
What are your payment terms?
Our standard payment terms are 30% T/T deposit in advance, and the balance against the copy of B/L. For long-term partners, we can also discuss L/C at sight.
Need Custom Pipes for Your Project?
- ISO & SGS Certified
- 100% MTC Provided
- Flexible MOQ (1x20GP)
- Custom Sizes & Grades
