Heavy-Wall ERW Structural Steel Tubing

When structural fabrication requires a substantial steel tube section, the right combination of profile, wall thickness, and material grade is essential. Our Heavy-Wall ERW Structural Steel Tubing is supplied for structural fabrication, machinery manufacturing, industrial equipment frames, and general steel construction.

We supply ERW carbon steel tubes in three main profiles: Round, square, and rectangular. Round tubes are used for tubular supports and mechanical structures, square tubes for structural frames and support assemblies, and rectangular tubes for equipment frames, brackets, and fabricated steel structures.

Our ERW tubes are manufactured by forming steel strip or coil into a tubular section and joining the longitudinal edges through electric resistance welding. We offer different section shapes, material grades, lengths, surface treatments, and end configurations to meet specified fabrication requirements.

02. Product Specifications & Configurations

We supply ERW carbon steel tubing with different dimensional and finishing options according to product scope and order requirements.

Specification Selection

• Round Tubes: Specify outside diameter and wall thickness.
• Square Tubes: Specify side dimensions and wall thickness.
• Rectangular Tubes: Specify width, height, and wall thickness.
• Material Grade: ASTM A53 Grade A and Grade B are listed material options. The selected grade and applicable product standard should match the purchase specification.
• Wall Thickness: Specify the required thickness according to structural drawings and component requirements.
• Length and Finishing: Select random or fixed length, together with the required surface treatment and end configuration.

03. Structural Features & Applications

Three Profiles for Different Fabrication Requirements

Our round, square, and rectangular ERW sections serve different structural and fabrication purposes.

• Round sections are used for tubular supports, mechanical structures, and equipment components.
• Square sections are used for structural frames, support assemblies, and machinery structures.
• Rectangular sections are used for equipment frames, brackets, and fabricated steel assemblies.

Wall Thickness for Structural Specifications

Wall thickness is a key purchasing dimension because it determines the amount of steel in the tube section and contributes to its overall weight. The required thickness should correspond to the structural design, section dimensions, material grade, and fabrication drawings.

End Configurations for Fabrication and Assembly

We offer four end configurations for different fabrication requirements:

• Plain End for general tube fabrication.
• Beveled End for welding preparation.
• Threaded End for threaded connections.
• Grooved End for grooved connection arrangements.

Typical applications include structural steel fabrication, industrial equipment frames, machinery manufacturing, construction frameworks, support structures, and general metal fabrication.

04. Manufacturing & Quality Control

We are Shanxi Midas Industrial Co.,Ltd, established in 2012 in Shanxi, China. Our steel business covers product development, design, production, and sales, with a product portfolio including steel coils, steel plates, steel strips, H-beams, and steel pipes.

Our factory site covers 600,000 m², with 10,000 m² of building area. We are supported by production equipment, a technical team, and inspection capabilities. Our steel products reach customers in 109 countries and regions.

ERW Manufacturing Process

1. Raw Material Preparation: Steel strip or coil is selected according to the required material grade and dimensions.
2. Tube Forming: Steel strip is formed into the specified tubular section.
3. Electric Resistance Welding: The longitudinal edges are joined through electric resistance welding.
4. Product Inspection: Finished tubing is checked against applicable dimensional, material, and quality requirements.

Quality Inspection

Inspection requirements are determined by the applicable product standard and purchase specification.

Material Test Certificates and inspection records can be arranged according to the agreed order documentation requirements.

05. Customization & Bulk Supply

We handle ERW steel tube orders according to specified section dimensions, material requirements, finishing configurations, and inspection arrangements.

For heavy-wall and non-standard specifications, we review the required outside diameter or section dimensions, wall thickness, steel grade, and applicable standard before confirming production feasibility.

For bulk orders, we coordinate:

• Product dimensions and material specifications.
• Random or fixed-length requirements.
• Surface treatment and end-processing options.
• Inspection items and quality documentation.
• Order quantities and packaging arrangements.
• Delivery and shipment requirements.

This order coordination connects the confirmed technical specification with manufacturing, inspection, and export arrangements.

06. Packaging & Export Delivery

We arrange ERW steel tube packaging according to product dimensions, lengths, quantities, and transportation requirements.

Available packaging arrangements include:

• Bundled steel tubes secured for handling and transportation.
• End protection according to product and shipment requirements.
• Identification labels for product specifications and batch identification.
• Export protection according to packaging and transportation requirements.

We provide pre-sales product consultation, order coordination, production and inspection progress communication, and after-sales support throughout the order process.