ASTM A498 Carbon Steel Welded Tube for Tubular Heat Exchangers.

• Customization: Available
• Application: Cast Iron, Chemical Processing, Construction, Oil and Gas, Water Supply, Building Material
• Pipe Diameter: 1/8"-5"
• Model NO.: ASTM A498 Carbon Steel Welded Tube
• Pipe Length: Max 50m
• Surface Finish: Black
• Steel Grade: A192/A210/A179/A498
• Material: Carbon Welded Steel
• Shape: Round/Customized
• Process: Hot Rolled/Cold Drawn
• Tolerance: ±5%
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Thickness: 1-150mm
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Size: 1/4"-4"
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10000 Ton/Year

Product Description

Product Description

ASTM A498 Carbon Steel Welded Tubes

1. Material Composition & Key Properties

• Primary Components:

  • Carbon (C): 0.30% max (balanced for weldability and strength).

  • Manganese (Mn): 0.60-1.35% (enhances toughness and hardenability).

  • Silicon (Si): 0.10-0.50% (improves deoxidation and strength).

  • Phosphorus (P) & Sulfur (S): ≤0.05% each (controlled for enhanced ductility).

• Mechanical Properties:

  Property	Value
  Tensile Strength	≥415 MPa (60,200 psi)
  Yield Strength	≥240 MPa (34,800 psi)
  Elongation	≥25% (in 50mm gauge length)
  Hardness	≤170 HB (Brinell)

 

2. Key Features & Advantages

• High Weldability: Optimized carbon equivalent (CE) ensures crack-free welding with common methods (SMAW, GMAW, SAW).

• Structural Integrity: Uniform wall thickness and controlled seam quality for reliable load-bearing performance.

• Versatility: Suitable for both low-temperature and moderate-high temperature applications (up to 400°C).

• Cost-Efficiency: Combines affordability with performance for general-purpose industrial use.

 

3. Manufacturing Process

• Welding Method: Electric Resistance Welding (ERW) or Submerged Arc Welding (SAW), followed by heat treatment (normalizing or stress-relieving).

• Surface Finish:

  • Black (Ungalvanized): For indoor or corrosion-protected environments.

  • Hot-Dip Galvanized (Optional): Zinc coating (≥610 g/m²) for outdoor/rust-prone applications.

• Testing & Quality Control:

  • Hydrostatic Testing: Ensures leak-proof performance under pressure.

  • Eddy Current Testing (ECT): Detects surface and subsurface defects in weld seams.

  • Chemical Analysis: Verified via spectrographic testing.

 

4. Applications

• Construction: Structural frameworks, scaffolding, and support columns.

• Mechanical Systems: Conveyor rollers, hydraulic cylinders, and machinery guards.

• Energy Infrastructure: Ducting for power plants, heat exchanger shells.

• Transportation: Trailer chassis, rail components.

 

5. Compliance & Standards

• Primary Standard: ASTM A498 (Standard Specification for Welded Carbon Steel Tubes).

• Complementary Standards:

  • ASTM A53 (General-purpose welded steel pipe).

  • ASME SA498 (Equivalent ASME certification for pressure applications).

  • ISO 630 (Structural steel quality guidelines).

 

6. Competitive Advantages

• Dimensional Flexibility: Available in sizes from 1/2" to 24" OD, with wall thicknesses up to 12.7mm (0.5").

• Certifications:

  • Mill Test Certificates (MTC) with traceability to ASTM A498.

  • Compliance with ISO 9001 for quality management.

• Customization:

  • Cut-to-length, threaded ends, or flanged connections.

  • Galvanized, painted, or coated surfaces per project requirements.

 

 

Detailed Photos

 

 

Processing of Production

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