KIEV, Feb. 1 ??“ Khartsyzsk pipe plant, Ukraine??™s only producer of large-diameter oil and gas pipes, diversified its pipe markets that had helped it boost production in 2005, the company said.

Khartsyzsk boosted production of pipes by 26.2% on the year to 546,600 metric tons, underscoring a robust increase in oil and gas sector and diversification, the company said.