Structural Carbon Steel Pipes such as ASTM A500, A53, A106, and A252 are widely used across construction, water, petroleum, oil & gas, and other industrial applications.
These pipes can serve structural purposes or be used for fluid, gas, and oil transmission. Each ASTM grade defines specific mechanical properties and testing requirements for different applications.
ASTM A500 Steel Pipe
Characteristics:
Economical structural pipe with a smooth bare finish
Slightly higher mechanical properties than standard pipe
Excellent workability: easy to weld, cut, form, machine, bend, flatten, punch, flare, and flange
Mechanical Properties:
Tensile Strength: 58,000 psi
Yield Strength: 46,000 psi ±
Typical Applications:
Handrails, posts, storage racks, displays, furniture
Structural components: bollards, micro-piling, frames, roll cages, truck racks, trailers, railings
ASTM A53 Steel Pipe
Characteristics:
Designed for coiling, bending, and flanging
Suitable for welding
Grades define chemical and mechanical properties
Intended for mechanical and pressure applications, also acceptable for ordinary steam, water, gas, and air lines
Types & Grades:
Type F – Furnace-butt-welded, continuous welded, Grade A
Type E – Electric-resistance-welded, Grades A and B
Type S – Seamless, Grades A and B
Mechanical Properties:
Tensile Strength: 60,000 psi
Yield Strength: 30,000 psi ±
Applications:
Low-pressure systems, structural supports, mechanical components, bollards, casing
ASTM A106 Steel Pipe
Characteristics:
Always produced seamless; sizes < 2" often cold drawn, ≥ 2" usually hot finished
Can be bent, coiled, and flanged
Suitable for high-temperature applications
Mechanical Properties:
| Grade | Tensile (psi) | Yield (psi) |
|---|---|---|
| A | 48,000 | 30,000 ± |
| B | 60,000 | 35,000 ± |
| C | 70,000 | 40,000 ± |
Applications:
High-temperature systems, pressure systems
Mechanical components, structural applications, spreader bars
ASTM A252 Steel Pipe
Characteristics:
Welded or seamless steel pipe piles
Acts as a permanent load-carrying member or shell for cast-in-place concrete piles
Structural applications: spuds, dolphins, building foundations
Mechanical Properties by Grade:
| Grade | Tensile (psi) | Yield (psi) | Elongation (2 in.) % |
|---|---|---|---|
| Grade 1 | 50,000 | 30,000 ± | 30 |
| Grade 2 | 60,000 | 35,000 ± | 25 |
| Grade 3 | 66,000 | 45,000 ± | 20 |
Applications:
Steel piling, structural pipe piles, cast-in-place concrete foundations
Marine structures, bridge foundations, heavy-load support
These four ASTM carbon steel pipe grades serve complementary purposes in structural, mechanical, and pressure applications. Proper selection depends on load requirements, environmental conditions, and project specifications.
