1. Product Name:

    EN S275 J2H Seamless Square Steel Tube Seamless Square hollow structural Section Tube

2. Certificate:

     hollow structural section ISO9001: 2008, API5L, 5CT, CE 

3. Applications: 
    hollow structural section Oil casing pipe, petroleum cracking tubes, heat exchange tube, pression steel pipe, carbon mechanical tubing, boiler steel pipe, structure seamless steel pipe, pipe for liquid transportation, tube for ship building, etc. 

4. Outer diameter:

   hollow structural section  20*20mm-600*600mm

5. Thickness:

    hollow structural section 2.5mm-30mm