I kēia manawa, loaʻa iā Hunan Great Steel Pipe Co., Ltd he 3 mau pūʻulu o ka laina hana hoʻomohala wela-rolled seamless kila a me 2 pūʻulu o ka laina hana hoʻomohala wela i hoʻonui ʻia me ka mana hana makahiki o 200,000 tons, ʻo ka laulā nui mai 73mm a 630mm.Kona kino a me kemika labs cab hana like kino a me kemika ho'āʻo a me ka hoʻokolohua no ke kila paipu, a ua lako me ka eddy i kēia manawa flaw detectors, leakage hewa ike a me kani ultrasonic māwae detectors etc. me ka piha piha o nā ana nānā, hiki ke hoʻokō i nā ʻano hoʻokolohua maʻamau a me nā koi nānā no nā paipu kila.