Recently, Haihao Group successfully completed the production and shipment of large-diameter steel pipes for an Indonesian client. The order included ASME B36.10 DN1400 ASTM A139 Gr.C pipe with a wall thickness of 14mm, specifically designed for high-strength applications in various industries. Manufacturing and supplying such large-diameter pipes presents unique engineering challenges that demand precision, expertise, and advanced technology.
ASME B36.10 DN1400 ASTM A139 Gr.C pipes
Challenges in Manufacturing Large-Diameter Steel Pipes
Producing large-diameter pipes (DN1400 and above) is significantly more complex than standard pipe sizes due to:
1.Material Strength and Uniformity
Maintaining consistent mechanical properties across a large-diameter pipe is crucial.
ASTM A139 Gr.C is a carbon steel grade known for its high tensile strength, good weldability, and durability.
2.Precision in Wall Thickness
Ensuring a uniform 14mm wall thickness throughout the pipe length requires strict quality control.
Variations in thickness can weaken structural integrity and impact performance under pressure.
3.Welding and Seam Quality
Large-diameter pipes often require submerged arc welding (SAW) to achieve high-strength welds.
The weld seams must undergo ultrasonic and radiographic testing (UT & RT) to detect potential defects.
4.Pipe Straightness and Roundness
Controlling deformation and ovality in DN1400 pipes is challenging, especially during rolling and cooling.
Advanced rolling techniques and precision machining help maintain perfect roundness.
5.Logistics and Handling
Transporting large-diameter pipes requires specialized logistics solutions, including customized trailers and lifting equipment.
Protective coatings may be applied to prevent damage during transit.
ASME B36.10 DN1400 ASTM A139 Gr.C pipes
Key Parameters of Large-Diameter Pipes
When selecting or manufacturing large-diameter pipes, several key parameters must be considered:
Standard & Specification：When choosing a product, you should check whether it complies with international standards such as ASME, API, etc.
Size and wall thickness：Whether the size is accurately controlled is an important indicator to test the factory’s production capacity. It is necessary to choose a factory with accurate production capacity.
Manufacturing Process – Electric Resistance Welded (ERW) or Submerged Arc Welded (SAW)
Testing & Inspection – Hydrostatic Testing, UT, RT, Dimensional Inspection
Coating Options – Epoxy, 3LPE, Galvanization (optional)
Material Grade:Materials that meet the standards determine the pressure and temperature resistance of the finished product
Why Choose Haihao Group for Large-Diameter Pipes?
1.Global Expertise – Decades of experience in manufacturing and supplying pipes to major international projects.
2.Advanced Production Facilities – State-of-the-art equipment ensures precision, strength, and durability.
3.Strict Quality Control – Every pipe undergoes rigorous testing to meet international standards.
4.Reliable Logistics – Efficient packaging and transportation solutions to ensure safe and on-time delivery.
The successful shipment of ASME B36.10 DN1400 ASTM A139 Gr.C pipe to Indonesia marks another milestone for Haihao Group in delivering high-quality, large-diameter steel pipes for global infrastructure and industrial applications.
Looking for large-diameter steel pipes? Contact Haihao Group for a professional solution! Email:sales@haihaogroup.com
