extra-heavy pipe 加重管子

double extra heavy pipe 特加重管子

heavy wall pipe 厚壁管

heavy-wall pipe 厚壁管

heavy-gauge pipe 厚壁管

heavy thickness pipe 厚壁管道

cold draw heavy wall pipe 冷拔厚壁管

cold-draw heavy wall pipe 冷拔厚壁管

heavy wall drill pipe [油气] 厚壁钻杆