Ka ọ dị ugbu a, Hunan Great Steel Pipe Co., Ltd nwere 3 tent nke na-ekpo ọkụ - Rolled enweghị nkebi ígwè anwụrụ mmepụta akara na 2 tent nke na-ekpo ọkụ na-agbasa enweghị enweghị nkebi ígwè anwụrụ mmepụta akara na kwa afọ mmepụta ike nke 200,000 tọn, size nso bụ site 73mm ka. 630 mm.Ya anụ ahụ na chemical labs na-eduzi dị iche iche anụ ahụ na kemịkal ule na nnwale maka ígwè ọkpọkọ, na-onwem na eddy ugbu a flaw detectors, leakage njehie nchọpụta na ultrasonic crack detectors wdg Maka elu, ọkara na obere nrụgide enweghị nkebi ígwè ọkpọkọ na mmanụ ụgbọala casing ọkpọkọ. na usoro nyocha zuru oke, nke nwere ike izute ule ọkọlọtọ dị iche iche na nyocha nyocha maka ọkpọkọ ígwè.