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DIRECT FORMING TO SQUARE TUBE MILL

Direct Forming to Square Tube Mill

Direct forming to square progressively bends flat strip into an open square or rectangular section before high-frequency welding and final sizing, avoiding the conventional round-to-square route.

Reference range: 20×20–500×500 mm, 0.5–12 mm wall
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Direct Forming to Square Tube Mill manufactured by Fengqi Machinery

APPLICATIONS

What this line can produce

  • HSS structural hollow sections
  • Machinery frames
  • Large steel-structure columns
  • Square and rectangular guardrail tube

CONFIGURATION FOCUS

Engineering features

  • One roll set can cover a designed section range
  • Reduced unnecessary deformation
  • Quick roll-change configuration available
  • Potential roll-cost and energy savings

TYPICAL PROCESS FLOW

A complete production sequence

Uncoiling → strip joining → accumulation → corner pre-bending → direct square forming → HF welding → sizing → straightening → cutting

Final process flow and equipment scope are confirmed after the product range and quality requirements are reviewed.

TECHNICAL FAQ

Common buyer questions

What is direct forming to square?

It forms square or rectangular tube directly from strip instead of first making a round tube and reshaping it.

Can one set of rolls produce every square size?

A designed range can share rolls, but the exact common-roll coverage depends on section dimensions, wall thickness and corner requirements.

Need a line matched to your product?

Send the size range, wall thickness, material grade, speed target, coil data and destination country.

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