Rectangular Welded Steel  Tube Supplier  hollow  section

1.Product Name:

   hollow structural section  

2.Material:

hollow structural section ASTM A500,ASTM A53,ASTM A106,S235JR,S355 JRH,Q195,Q235,Q345,16M,etc.

3.Raw Matrerial:

 hollow structural section   steel plat,mother pipe

4.Outside Dimentions Tolerance

5.Standard:

GB,ASTM,ASME,DIN,EN,JS.

6.Surface Treatment:

    Mill finished as cold rolled

    Transparent oil painted

    Hot or cold galvanized

    Red oxid coated

    As custoer's requirement

7.Quality Control:

    Test:chemical component analysis,nechanical properties,technical properties,size inspection

8.Apllication:

   building constrcuture

9.Some data for your reference: