Galvanized Square Rectangular Steel Tube | 20x20mm 25x25mm Wall Grade and Strength Inquiry

• Invoicing

  By Theoretical Weight
  Oiled or Non-oiled

  Non-oiled
• Section Shape

  Square
  Surface Treatment

  Galvanized
• Tolerance

  ±1%
  Alloy Or Not

  Non-Alloy
• Application

  Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Oil Pipe, Chemical Fertilizer Pipe, Structure Pipe, Other
  Certificate

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

  within 7 days
  Grade

  S235JR,S235JO,S235J2,SS330,SPHC, S185,CS Type B
• Processing Service

  Welding, Punching, Cutting, Bending, Decoiling
  Special Pipe

  API Pipe, Other, EMT Pipe, Thick Wall Pipe
• Standard

  ASTM
  Technique

  Saw
• Product name

  Galvanized Square Steel Pipe
  Material

  Q235/Q345/SS400/ST37-2/ST52/Q420/Q460/S235JR/S275JR/S355JR
• Surface

  Zinc Coating
  Shape

  Square, Rectangular,Round or Customized
• Length

  1-12m or Customized
  Wall thickness

  0.5-6.5mm or customized
• Outer Diameter

  10x10mm, 15x15mm, 20x20mm, 25x25mm, etc or Customized
  MOQ

  1 Ton
• Packing

  Standard Seaworthy Packing
  Usage

  Building Construction

Choose compatible side dimensions and wall thickness before selecting a galvanized hollow section.

Square tube geometry

The description includes 20×20 and 25×25 mm alongside other sizes. The actual wall choice is a broad range, so confirm one physically compatible section instead of treating every side and wall value as a valid combination.

Material and manufacturing

Several S and Q grades and other steel references are listed. Select one actual designation and manufacturing route with material evidence, and agree the zinc coating inspection criteria.

• Actual steel designation
• Both section side dimensions
• Compatible wall thickness
• Supply length and end preparation
• Coating and structural inspection

Strength requirements

Six, 6.4 and twelve metre lengths are selectable. Define the design and fabrication requirements separately; high strength wording and certificate names do not establish mechanical values, pressure capacity or approval of an installed structure.