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Quick Details

  • Standard: ASTM, GB, ASTM A53-2007, GB 6479-2000
  • Grade: 10#-45#, 16Mn, Q195-Q345, ST35-ST52, 10#, 16Mn, Q195, Q215, Q235, St37-2
  • Thickness: 0.8 - 25 mm
  • Section Shape: Square
  • Outer Diameter: 10mm*10mm-600mm*600mm
  • Place of Origin: Tianjin, China (Mainland)
  • Secondary Or Not: Non-secondary
  • Application: Structure Pipe
  • Technique: ERW
  • Certification: UL
  • Surface Treatment: oilling or paint, pickling , oiled , painted , galvanized
  • Special Pipe: Thick Wall Pipe
  • Alloy Or Not: Non-alloy
  • MOQ: 10 TON
  • Wall thickness: 0.8mm-25mm
  • Length: 1m-12m
  • size: 10mm*10mm-600mm*600mm
  • Standard for square tube: ASTM A500,EN10219
  • price validity for square tube: 5 days
  • Usage: constuction pipe,roof usage,liquid delivery
  • Grade for square tube: 16Mn,STK400,STK500,ST37-2,SS400,Q195,Q215
  • type: square steel tube

Packaging & Delivery

Packaging Details rain proof export standard package for square steel tube
Delivery Time within 15 days after contract for square steel tube

  square steel  tube

  ASTM A500 black  square tube manufacturer from China

 Producing square steel tube ,rectangular tube and  round tube.

 All of our square steel tube meets ASTM A500 Standard.

Accepting customer's special needs for size,delivery time,and other sevice.






Generally 1m-12m


ASTM A500, EN10219,JISSG3466



Product Category

Metallurgy, Mineral & Energy




1.Big OD: in bulk vessel

2.Small OD: packed by steel strips

3.according to the requirements of customers for square steel tube


used for gas,water,oil delivery pipe.  Steel structure,Shipbuilding, Bridging

Main market

Middle East, Africa, Asia and some European country and America ,Australia

Country of origin



30,000 Metric Tons per Month


1 Payment terms :T/T ,L/C,D/P

2 Terms of trade :FOB ,CIF,CFR,EXW

3 MOQ : 10ton

4 Lead time:20 days after prepayment for square steel tube





Transaction History of the Supplier

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Transaction Overview


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Trade Assurance
China (Mainland) | Manufacturer, Trading Company
Transaction Level:
Supplier Assessments:
28 Transactions 1,300,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $682,000
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