EN
Carbon welded steel tubes square pipe
Welded steel pipe is produced by curving and forming steel plates or strips, and then welding the seams together.
Compared to seamless steel pipes, welded pipes offer a more cost-effective production process and greater efficiency, resulting in a more competitive market price. In terms of performance, welded pipes reliably meet the requirements of standard pressure applications, with a pressure-bearing capacity generally around 10 MPa, making them highly versatile.
Description
Product Name |
Carbon steel welded tube |
OD |
26.9-310mm(square) |
Thickness |
1.2-20mm |
Length |
1-12m or as per customers' requirements |
Material |
Q195—Grade B, SS330, SPC, S185 |
Standard |
EN/DIN/JIS/ASTM/BS/ASME/AISI etc. |
Package |
1) Big OD: in bulk |
Certification |
ISO 9001-2008 BV TUV |
Competitive Advantage
The carbon steel welded pipes produced by Tianjin Kunyu Steel are manufactured from high-quality Q235B/Q345B steel coils using advanced high-frequency welding technology, followed by precise internal and external flash removal.
Our products strictly comply with GB/T 3091 and ASTM A53 standards, and are available in a complete range of specifications, with outer diameters ranging from 17mm to 1620mm and wall thicknesses from 1.0mm to 20mm.
Inspection
Each pipe undergoes rigorous hydrostatic testing and eddy current inspection before leaving the factory, ensuring stable pressure-bearing capacity (up to 10MPa or higher) and freedom from internal defects. The surface is available as black steel pipe or with highly corrosion-resistant hot-dip galvanized treatment.
