Specifications
• JIS G3454 tubing come with a comprehensive specification
• Procedure: seamless
• Dimensions: O.D.: 10 mm – 120 mm
• Thickness: 1.0mm – 20mm
• Steel Grade: SPTG370,STPG410
• Surface Coating: Black, Red, Primer, Hot Dip Galvanizing
• End Type: Square cut, Bevelled, Grooved
• Pipe Packing: In bundles, Plastic film full length wrap
Chemical Composition(%)
Steel Grade | C | Si | Mn | P | S |
SPTG370 | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.040 | ≤0.040 |
SPTG410 | ≤0.30 | ≤0.35 | 0.30-1.00 | ≤0.040 | ≤0.040 |
Mechanical Properties
Steel Grade | Tensile Strength | Yield Strength | (%)Elongation |
(Mpa) | (Mpa) | NO.11/12 sample | NO. 5 sample | NO.4 sample |
SPTG370 | ≥370 | ≥215
| ≥30 | ≥25 | ≥28 | ≥23 |
SPTG410 | ≥410
| ≥245
| ≥25 | ≥20 | ≥24 | ≥19 |
Advantages of Haotan Tube
• Precise custom outer diameter and inner diameter
• Tight tolerances, resulting in reduced machine time / Dimensional accuracy
• Eddy current inspection and ultrasonic inspection
• Smooth and Clean OD and ID surfaces
• Excellent machining characteristics
• Wider range of physical properties attainable through process and annealing options
• Our products were exported to Europe, America, Japan, South Korea, The Middle East, Southeast Asia and in total six continents over 20 countries, and which has been consistently trusted by customers.
• The annual production capacity can reach 60,000 tons under years of development. Every-year R&D investment and a team of technicians enable strong R&D capability. HAOTAN has full system of production with advanced equipment, such as perforation, pickling, cold rolling, cold drawing, straightening, flaw detection, tensile test and machining.
Hao Tan Inspection

