Specifications
• JIS G3455 tubing come with a comprehensive specification
• Procedure: seamless
• Dimensions: O.D.: 10 mm – 120 mm
• Thickness: 1.0mm – 20mm
• Steel Grade: STS370,STS410.STS480
• Surface Coating: Black, Red, Primer, Hot Dip Galvanizing
• End Type: Square cut, Bevelled, Grooved
• Pipe Packing: In bundles, Plastic film full length wrap
Our Services
• Fast Delivery
Shipment in around 10 days below 50 metric tons after sight of irrevocable L/C or Deposit by T/T.
• Good Service
Offer professional technical support with fluent English and Chinese at any time.
• Good After-sale Service
Reach us 24 hours *7 days if got any problems after the shipment and even the order is done.
• The Best Price
On basis of factory manufacturing, we offer the most reasonable price than all the other trade companies.
Chemical Composition(%)
| Steel Grade | C | Si | Mn | P | S |
| STS370 | ≤0.25 | 0.10-0.35 | 0.30-1.10 | ≤0.035 | ≤0.035 |
| STS410 | ≤0.30 | 0.10-0.35 | 0.30-1.40 | ≤0.035 | ≤0.035 |
| STS480 | ≤0.33 | 0.10-0.35 | 0.30-1.50 | ≤0.035 | ≤0.035 |
Mechanical Properties
| Steel Grade | Tensile Strength | Yield Strength | （%）Elongation |
| （Mpa） | (Mpa) | NO.11/12 sample | NO. 5 sample | NO.4 sample |
| STS370 | ≥370 | ≥215
| ≥30 | ≥25 | ≥28 | ≥23 |
| STS410 | ≥410
| ≥245
| ≥25 | ≥20 | ≥24 | ≥19 |
| STS480 | ≥480 | ≥275 | ≥25 | ≥20 | ≥22 | ≥17 |
Why Choose Haotan
• More than 15 years experience.
• R&D strength.
• Provide OEM and ODM services.
• Assist material (Standard, Steel Grade) selection and metallurgical properties of our products.
• Assist inspection and interpretation of specifications to Classification Society.
• Assure products to meet requirement.
• Minimize logistics of dealing with large shipments.
• Investigate problems when they occur.
Seamless Steel Pipe Manufacturing Process
The round steel bar is used to produce seamless pipe. After heating the bar to a high temperature, a probe is put into the bar to produce a hole. The cylinder is then moved to rollers that shape it to the required diameter and wall thickness.
