Q355B Longitudinal Welded Steel Pipe

Introduction to Spiral Welded Pipe Products.

The core advantage of Q355B longitudinal welded pipe lies in its perfect balance between material properties and structural efficiency. With a yield strength of ≥355MPa, this product achieves a lightweight structural design, reducing overall construction costs. Furthermore, its excellent carbon equivalent control demonstrates superior weldability, significantly improving on-site construction efficiency.

Geometric Dimension Inspection of Q355B Longitudinal Welded Pipe

High-precision inspection equipment such as laser diameter gauges, ultrasonic thickness gauges, and π-type thickness gauges are used to systematically measure the outer diameter, ovality, and wall thickness of the steel pipes, ensuring that all dimensional tolerances meet standard specifications. At the same time, a laser theodolite is used to scan and inspect the straightness of the pipe body, and an end-face bevel inspection instrument is used to accurately verify the bevel angle and blunt edge dimensions, ensuring the matching accuracy and assembly quality of the steel pipe in subsequent welding stages.

Welded steel pipe parameter table

About our company

GNEE STEEL is a steel export trading company focused on the international market. With many years of experience in exporting Q355B series steel pipes, we provide customers with high-quality steel pipe solutions that match our technology. With professional technical services and a stable supply chain, we have become a trusted partner for international customers.

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