用seamless steel pipe造句子，“seamless steel pipe”造句

The suspension framework was welded by the seamless steel pipe, the hand crane and suspension framework are fixed on the suspension coop.

Liaocheng seamless steel pipe business experts said that the progress Rio Tinto, the Ministry of Foreign Affairs has been described in detail.

Liaocheng seamless steel pipe business experts said that the first half of the approximately 50% of production is sold in the spot market.