Hot Sale 20# S235jr Black Round Pipe 5 Inch Sch 40 Seamless Steel Pipe Carbon Steel Fluid Pipe
Seamless steel pipes are made of a whole round steel perforated. Steel pipes with no welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, jacked pipes, etc. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes have various complex shapes such as square, oval, triangle, hexagon, melon-shaped, star-shaped, and finned pipes.
Specification
| Standard |
ASTM |
| Out diameter |
21.3 - 610 mm or customized |
| Wall thickness |
2 - 50 mm or customized |
| Section Shape |
Round |
| Application |
Fluid Pipe |
| Surface Treatment |
varnished, cap, marking |
| Certification |
API |
| Usage |
Oil Gas Water Well |
| ST37/ST44 Precision Seamless Steel Pipe |
DIN 2448/2391/1629/17100 |
| DIN 2391/2448/1629,ST37/ST52 steel pipe |
ST37/ST52 |
| Hot Rolled Seamless Steel Pipe |
ASTM A 53/106/API 5L B |
| Cold Drawn Seamless Steel Boiler Tube |
ASTM A106/DIN 17175/2448 |
| Technology |
Hot Rolled Cold Rolled |
Dimension Tolerances of Seamless Steel Pipe
| Pipe types |
Pipe Size(mm) |
Tolerances |
| Hot rolled |
OD |
<50 |
±0.50mm |
| ≥50 |
±1% |
| WT |
<4 |
±12.5% |
| ≥4～20 |
+15%, -12.5% |
| >20 |
±12.5% |
| Cold drawn |
OD |
6～10 |
±0.20mm |
| 10～30 |
±0.40mm |
| 30～50 |
±0.45 |
| >50 |
±1% |
| WT |
<1 |
±0.15mm |
| >1～3 |
+ 15%, – 10% |
| >3 |
+ 12.5%, – 10% |
FAQ
Q1. Are you a manufacturer or trader?
We are a manufacturer, and we can have our own factory produced many steel products.
Q2. Whether your company supports Trade Assurance order?
Yes, we can (100% product quality protection; 100% on-time shipment protection; 100% payment protection)
Q3. Can we get the some samples? Any charges?
Yes, you can get available samples in our stock. If the samples from new production, we will charge some reasonable cost, but this amount will be deducted from your first order.
Q4. How do we build up business relations with your company?
Send us your requirement which includes size, coating info, parameters, quantity, destination .
Q5. What is the MOQ?
We can accept small orders.Please feel free to contact us, we can meet your requirements.
Q6. What's your advantage?
With high-quality products and efficient customer service, we adhere to the principle of customer first.
Q7. How long is your delivery time?
Delivered within 15 days after receipt of deposit
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