Weldable structural steel pipes foroffshore applies for EN 10225 standard, main-ly for the demand of steel platesand profile steel. Extensive amount of this kind of steel pipes are needed inthe practical engineering application.In view of this, Tianda star-ted developingseamless steel pipes for this standard.

After more than half a year, we finally developed S235JRH,S235J0H, S235J2H, S235K2H, S275JRH, S275J0H, S275J2H, S275K2H, S355JRH,S355J0H, S355J2H, S355K2H and other series of products successfully, and we have formulatedthe relevant technical specification. We have approved by the customers and signed a batch of new productorders, which specifications include ∮ 34x4.5 、 ∮ 42x6 、 ∮ 60x7 、 ∮ 89x8 、 ∮ 102x9 、 ∮ 168x13 、 ∮ 203x14 、 ∮ 325x18 ， a total quantity of 403 tons, thusbroaden the scope of the products and improve the competitiveness of Tianda.

Weldable structural steel pipe for offshore requires high requirements for strength and toughness.Generally, it requires the impact energy of steel pipe attains to 40J in - 20 ℃ , and meanwhilerequires a good weldability to ensure the welding of the scene. This kind ofproducts which are the security assurance of offshore equipment are mainly usedfor offshore equipment pipe pile, pillar and other structural supports.

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