Introduction

At Shandong Guoguan Metal, we pride ourselves on supplying high-quality Welded Steel Pipes (commonly referred to as welded pipes). These pipes are manufactured using steel plates or steel strips that are curled into shape and joined using advanced welding technologies.

Known for their efficient production process and cost-effectiveness, welded pipes offer exceptional value in industrial applications. While their pressure-bearing capacity is distinct from seamless pipes, modern manufacturing techniques ensure that our welded pipes meet the rigorous demands of most structural and fluid transmission applications.

Since the 1930s, rapid advancements in continuous rolling technology for high-quality steel strips, combined with breakthroughs in welding and non-destructive testing (NDT), have significantly elevated the quality of welds. Today, welded pipes are replacing seamless pipes in an increasing number of sectors, including construction, machinery, and transportation.

Product Classification

To meet diverse project requirements, Shandong Guoguan Metal offers welded pipes categorized by various standards:

1. By Welding Process:

• Furnace Welded Pipes: For general low-pressure applications.

• ERW (Electric Resistance Welded) Pipes: High-frequency welding for structural and fluid use.

• SAW (Submerged Arc Welded) Pipes: Including automatic arc welding for heavy-duty applications.

2. By Weld Seam Type:

• Longitudinal Welded Pipes (LSAW/Straight Seam): Features a single straight seam along the length.

• Spiral Welded Pipes (SSAW): Features a spiral seam, ideal for large diameters.

3. By Cross-Section Shape:

• Round Pipes

• Shaped Pipes: Including Square, Rectangular, and Flat/Oval sections.

4. By Application:

• General Structural Pipes

• Galvanized Welded Pipes (for corrosion resistance)

• Oxygen-blowing Pipes

• Wire Conduits & Sleeves

• Metric Welded Pipes

• Idler/Roller Tubes

• Deep Well Pump Pipes

• Automotive & Transformer Pipes

• Thin-wall & Heterosexual Pipes

Performance and Specifications

Our general welded pipes are primarily designed for the transport of low-pressure fluids (such as water, gas, and oil) and structural purposes.

• Materials: We utilize high-quality carbon structural steels (such as Q195A, Q215A, Q235A) and other weldable soft steels to ensure durability.

• Quality Assurance: Every pipe leaving the Shandong Guoguan Metal facility undergoes strict quality inspections. This includes Hydrostatic Tests (water pressure), Bending Tests, and Flattening Tests to guarantee surface quality and weld integrity.

• Dimensions:

  • Length: Standard delivery lengths range from 4m to 10m, with options for fixed or double lengths based on customer needs.

  • Ends: Available with Threaded or Plain ends to suit different installation scenarios.

  • Wall Thickness: Available in Standard and Extra-Strong variations.

Applications & Customization Services

Thanks to their versatility and excellent machinability, welded steel pipes from Shandong Guoguan Metal are widely used across numerous industries:

• Construction: Light steel structures, door/window frames, and structural supports.

• Industrial Manufacturing: Boiler manufacturing, automotive components, and shipbuilding.

• Infrastructure: Wire and cable conduits, high-rise warehousing shelves.

• Agriculture: Agricultural machinery and greenhouse frames.

• Furniture Manufacturing

Your Partner in Custom Solutions
At Shandong Guoguan Metal, we understand that every project is unique. In addition to our comprehensive range of standard specifications, we offer One-Stop Customization Services.

Whether you require special dimensions, specific material grades, or pipes for specialized purposes, our team is ready to deliver flexible and efficient solutions tailored to your exact requirements.