Q355B Straight Seam Welding Pipe

Introduction to Straight Seam Welded Steel Pipes

Q355B straight seam welded steel pipe is a high-performance steel pipe made from Q355B low-alloy high-strength structural steel through a straight seam welding process. It perfectly combines the excellent mechanical properties of Q355B material with the efficient manufacturing process of straight seam welded pipe, making it an indispensable key structural material and fluid transport pipeline in modern industrial fields.

Main Welding Processes and Product Classification

Based on production processes and product specifications, they are mainly divided into two categories:

1. Q355B High-Frequency Straight Seam Resistance Welded Pipe

Process Characteristics: Utilizes high-frequency current (HFW) continuous roll forming, resulting in fast welding speed, high efficiency, and a small heat-affected zone.

Product Features: Smaller diameter, smooth weld seam, high dimensional accuracy, and good cost-effectiveness.

Typical Specifications: Outer diameter typically ≤ 610mm, with relatively thin wall thickness.

2. Q355B Submerged Arc Welded Straight Seam Pipe

Process Characteristics: Utilizes JCOE cold bending forming and submerged arc welding (SAW) for both internal and external main weld seams.

Product Features: Capable of producing large-diameter, thick-walled pipes with deep, high-strength weld seams and excellent pressure resistance.

Typical Specifications: Outer diameter can reach over 2000mm, and wall thickness can reach over 50mm.

About our company

GNEE STEEL's core business is providing high-quality Q355B welded pipes to the international market. We have built an efficient cross-border logistics and warehousing system to deliver high-quality Chinese industrial pipes to your projects quickly and intact. Whether you need structural straight seam welded pipes or fluid transportation pipelines, we can provide a one-stop solution from selection and quality assurance to export customs clearance.

Hot Tags: q355b straight seam welding pipe, China q355b straight seam welding pipe manufacturers, suppliers, BS En10025, CEW Pipes, Longitudinal Electric Resistance Weld, Low alloy steel pipes, Straight Seam Welded Steel Pipe, Straight Welded Seam Carbon Steel Pipeline