1020 1045 A106B Carbon Seamless Steel Pipes ST37 ST52 Hot Rolled
Product Overview
High-quality carbon seamless steel pipes manufactured through hot-rolled processes, available in various materials including ST52, CK45, 4140, 16Mn, and stainless steel grades.
Manufacturing Processes
Hot-rolled (extruded) seamless steel pipe:
Process: Round billet → Heating → Piercing → Rolling/extruded → Sizing → Cooling → Straightening → Inspection
- High production efficiency with relatively low cost
- Wide size range for outer diameter and wall thickness
- Surface has oxide scale (typically black)
- Dimensional accuracy and surface finish are not as refined as cold-drawn pipe
Cold-drawn (rolled) seamless steel pipe:
Process: Hot-rolled pipe as billet → Pickling to remove oxide scale → Cold drawing or cold rolling → Heat treatment (stress relief) → Straightening → Inspection
- High dimensional accuracy and excellent surface finish
- Superior mechanical properties with higher strength
- Longer production cycle and higher cost
- Typically used for small diameter, thin-walled, and high-precision applications
Product Specifications
| Product Name |
1020 1045 A106B Carbon Seamless Steel Pipe ST37 ST52 Hot Rolled |
| Material |
ST52, CK45, 4140, 16Mn, 42CrMo, E355, Q345B, Q345D, Stainless Steel 304/316, Duplex 2205, etc. |
| Delivery Condition |
BK, BK+S, GBK, NBK |
| Straightness |
≤ 0.5/1000 |
| Roughness |
0.2-0.4 u |
| Diameter |
6mm - 1000mm |
| Length |
1000mm - 12000mm |
| Tolerance EXT |
DIN2391, EN10305, GB/T 1619 |
| Tolerance INT |
H7, H8, H9 |
| Shape |
Round |
| Technology |
Perforation / Acid pickling / Phosphorization / Cold drawn / Cold rolled / Annealing / Anaerobic annealing |
| Protection |
Anti-rust oil on inside and outside surface, plastic caps in both ends |
Packaging & Shipping
Packing Details: Export standard package, bundled or as required
Delivery Time: According to order quantity
Recommended Shipping Methods:
- By sea (Container or Bulk)
- By air or express for small size samples
Container Sizes
- 20ft GP: 5.8m (length) × 2.13m (width) × 2.18m (height)
- 40ft GP: 11.8m (length) × 2.13m (width) × 2.18m (height)
- 40ft HG: 11.8m (length) × 2.13m (width) × 2.72m (height)
Frequently Asked Questions
Q1. What are your company's main products?
A1: Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, channel, etc.
Q2. How do you control quality?
A2: Mill Test Certification is supplied with shipment, Third Party Inspection is available, and we also maintain ISO and SGS certifications.
Q3. What are the advantages of your company?
A3: We have many professionals and technical personnel, offer more competitive prices, and provide better after-sales service than other stainless steel companies.
Q4. How many countries have you exported to?
A4: Exported to more than 50 countries including America, UK, Kuwait, Egypt, Turkey, Jordan, India, etc.
Q5. Can you provide samples?
A5: We can provide small samples from stock for free upon request. Customized samples typically take about 5-7 days to prepare.