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Quick Details

  • Standard: API, ASTM, BS, DIN, GB
  • Standard2: API 5L, ASTM A182-2001, BS 1139, BS 1387, BS EN10219, DIN 1630, GB/T 3091-2001, GB/T 9711.2-1999, GB/T9711
  • Grade Group: 10#-45#, Q195-Q345, ST35-ST52
  • Grade: 20#, Q195, Q235, Q345, St37-2
  • Thickness: 0.5 - 20 mm
  • Section Shape: Square
  • Outer Diameter: 15*15--400*400mm
  • Place of Origin: Tianjin, China (Mainland)
  • Secondary Or Not: Non-secondary
  • Application: Structure Pipe
  • Technique: Hot Rolled
  • Certification: GB
  • Surface Treatment: black pipe
  • Special Pipe: EMT Pipe
  • Alloy Or Not: Non-alloy
  • product: Q345 black square steel tube
  • size: 15*15--400*400
  • material: Q345
  • suface: black or oil
  • length: 1--12m
  • package: PVC+bundles
  • factory: zhongtong steel pipe
  • from: tianjin,China
  • MIQ: 5ton each size
  • delivery time: 15-20days

Packaging & Delivery

Packaging Details in bundle or as cusomer's requirements
Delivery Time 15days after receive deposite


Q345 black square steel tube

Product NameProduct Category
Wall Thickness0.5mm-20mm
Length1m-12m ,by customer’s requirements
International StandardISO 9001-2008
StandardsASTM A53,BS1387-1985,GB/T3091-2001,GB/T13793-92, GB/T6728-2002
Product CategoryMetallurgy, Mineral & Energy



Packing1.Big OD: in bulk vessel
2.Small OD: packed by steel strips
3.woven cloth with 7 slats
4.according to the requirements of customers
UsageMechanical & manufacture, Steel structure,Construction
Furniture,Garden building, fence poles
Main marketMiddle East, Africa, Asia and some European country and America ,Australia
Country of originChina
Productivity20,000 Metric Tons per Month
Remark1 Payment terms :T/T ,L/C
2 Terms of trade :FOB ,CFR,CIF ,DDP,EXW
3 Minimum order : 20 tons
4 Lead time: on or before 20 days .


Transaction History of the Supplier

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Transaction Overview


Transaction Details

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China (Mainland)
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Supplier's Trade Assurance Limit: US $29,000
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