Sebtembar 17, 2021, Wasaaradda Ganacsiga ee Mareykanka ayaa soo saartay ogeysiis ay ku sheegtay in dib u eegistii ugu dambeysay ee ka hortagga qashin-qubka ee shanaad ee xirmooyinka tuubooyinka birta dabada-laxanka ah (CarbonSteelButt-WeldPipeFittings) ee laga keeno Shiinaha, Taiwan, Brazil, Japan iyo Thailand la soo gabagabeyn doono .Haddii dembiga la tirtiro Waajibaadka ka hortagga qashin-qubka ee kiiskan wuxuu keeni doonaa in la daadiyo alaabada ku lug leh kiiska Shiinaha oo lagu daadiyo heerka 182.90% ama dhacdooyinka kiisaska, heerka daadinta alaabta ku lug leh kiiska Shiinuhu wuu sii socon doonaa ama wuu dhacayaa, daadinta alaabada kiiska ku lug leh way sii socon doontaa ama waxay ku dhici doontaa xadiga daadinta 87.30% iyo 52.25%.Tuurista alaabada ku lug leh kiisku way sii socotay ama waxay ku dhacday heerka daadinta 65.81%, iyo heerka daadinta alaabada ku lug leh Thailand ayaa sii socotay ama ku dhacday heerka daadinta 52.60%.waa 7307.93.30.

Diisambar 12, 1986, Maraykanku wuxuu si rasmi ah ugu soo rogay waajibaadyada ka hortagga qashinka tuubooyinka tuubooyinka birta-alxanka leh ee ka soo jeeda Brazil iyo Taiwan, Shiinaha.Febraayo 10, 1987, Maraykanku wuxuu si rasmi ah ugu soo rogay waajib ka-hortagga qashin-qubka tuubooyinka birta-kaarboonka ee ka soo jeeda Japan., Luulyo 6, 1992, Maraykanku wuxuu si rasmi ah ugu soo rogay waajib ka-hortagga qashin-qubka tuubooyinka birta dabada leh ee kaarboonka oo ka bilaabmay Shiinaha iyo Thailand.Tan iyo markaas, Maraykanku waxa uu sameeyay 4 dib u eegis qorrax-dhacii, Janaayo 6, 2000, Noofambar 21, 2005, Abriil 15, 2011, iyo Agoosto 23, 2011. Xaqiijinta iyo ku dhawaaqista ayaa la sameeyay 4 jeer.ereyga.Luulyo 1, 2021, Waaxda Ganacsiga ee Mareykanka ayaa soo saartay baaritaan ku saabsan dib u eegistii shanaad ee ka hortagga qashin-qubka qorrax dhaca ee xirmooyinka tuubooyinka birta dabada ka sameysan ee kaarboon laga keeno Shiinaha, Taiwan, Brazil, Japan iyo Thailand.