Sincerely hope we become long-term partners - Steel pipe & Fittings:

Double tube, Double wall steel tube

Double wall tube with two walls. Inside material is so wear resistantace to transport more valume concrete and outside low carbon steel play the role of protection. Inner: used wear resistant alloy steel, Outer: lower carbon steel.

Used special composite process.
Between the double wall combinated closely.
Inside material is so wear resistantace to transport more valume concrete.
Outside low carbon steel play the role of protection.
We can product other specifications to the needs of customer.