Hot-Dip Galvanized Square Tube – 20 × 20mm and 25 × 25mm Requirements

• Coating

  Z275~Z600
  Hardness

  Full Hard
• Spangle Type

  Regular Spangle
  Thickness

  0.21 mm ~ 0.50 mm(0.01in~0.02in)
• Type

  Square Tubes
  Application

  Making Pipes, Cutting Sheets, Making Small Tools, Making Corrugated Sheets, Making Container, Making Fences
• Certificate

  API , CE, RoHS, SNI, BIS, Saso, PVOC, SONCAP, SABS, SIRM, TISI, KS, JIS, Gs, ISO 9001
  Delivery Time

  within 7 days
• Grade

  Q195/Q235/Q345
  Length

  1-12m or as required
• Oiled or Non-oiled

  Non-oiled
  Processing Service

  Welding, Punching, Cutting, Bending, Decoiling
• Skin Pass

  Yes
  Standard

  BS EN AISI ASTM JIS DIN GB, ASTM AISI JIS DIN GB
• Technique

  Hot Rolled Based
  Tolerance

  ±1%
• Product name

  Square Steel Tube
  MOQ

  1 Ton
• Surface

  Galvanized Coated
  Shape

  Square Rectangular
• Payment term

  30%TT Advance + 70% Balance
  Keyword

  Galvanzied Square Pipe
• Usage

  Construction Structure
  Steel Grade

  Q195/Q235/Q345
• Sample

  available

Hot-dip galvanized square steel tube is identified with 20 × 20mm and 25 × 25mm section requirements.

Choose the hollow section

Select one nominal square size and define wall thickness, steel grade and length. If a rectangular alternative is required, provide both side dimensions rather than treating a square-size reference as a rectangular specification.

• 20 × 20mm square request.
• 25 × 25mm alternative.
• Hot-dip galvanized finish.
• Wall and length to define.
• Selected geometry to draw.

Agree fabrication details

Include corner tolerances, ends and any joining requirements that affect the component.

Request section inspection

Obtain material, dimensional and coating records before acceptance. General high-strength wording provides no measured tensile value, load capacity or pressure rating; confirm the chosen tube against the actual drawing and intended service.