
ASTM A1006 Grade 35 50 60 70 80 Welded Steel Tube Black Plain End Laser Beam Welded For General Purpose
Introduction
ASTM A1006 is a specification that covers welded steel tubes for general purposes. These tubes are produced using laser beam welding technology, which ensures high precision and quality. The grades specified in this standard include Grade 35, 50, 60, 70, and 80, each designed to meet different mechanical property requirements.
Material
The material used in ASTM A1006 welded steel tubes is typically low carbon steel, which provides excellent weldability and ductility. The tubes are available in various sizes and wall thicknesses, making them suitable for a wide range of applications.
Specification
The specification outlines the requirements for the manufacturing process, dimensions, tolerances, and testing methods for the welded steel tubes. It ensures that the products meet the necessary quality standards for structural and general-purpose applications.
Chemical Composition
| Grade | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
| 35 | ≤ 0.26% | 0.60 - 0.90% | ≤ 0.04% | ≤ 0.05% | ≤ 0.40% |
| 50 | ≤ 0.26% | 0.60 - 0.90% | ≤ 0.04% | ≤ 0.05% | ≤ 0.40% |
| 60 | ≤ 0.26% | 0.60 - 0.90% | ≤ 0.04% | ≤ 0.05% | ≤ 0.40% |
| 70 | ≤ 0.26% | 0.60 - 0.90% | ≤ 0.04% | ≤ 0.05% | ≤ 0.40% |
| 80 | ≤ 0.26% | 0.60 - 0.90% | ≤ 0.04% | ≤ 0.05% | ≤ 0.40% |
Mechanical Properties
| Grade | Yield Strength (ksi) | Tensile Strength (ksi) | Elongation (%) |
| 35 | 35 | 55 - 75 | 20 |
| 50 | 50 | 65 - 85 | 20 |
| 60 | 60 | 70 - 90 | 20 |
| 70 | 70 | 75 - 95 | 20 |
| 80 | 80 | 85 - 105 | 20 |
Application
ASTM A1006 welded steel tubes are widely used in various applications, including:
- Construction: Structural components in buildings and bridges.
- Manufacturing: Frames and supports for machinery and equipment.
- Automotive: Chassis and structural parts in vehicles.
- General Purpose: Various applications requiring durable and reliable steel tubing.
These tubes are favored for their strength, versatility, and ability to be customized for specific needs. The laser beam welding process enhances the quality and integrity of the welds, making them suitable for demanding applications.





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The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
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