STC石油套|LTC石油套|BTC石油套|EUE石油套|承受压力使用性能,销热线;15132782988,Q935385604,刘经理|J55石油套 |P110石油套|N80美标石油套|石油套光亮及成品钢级是J-55,K-55,N-80,P-110,C-75,C-95等,规格主要为219*7.72石油套,219*8.94美标石油套,219*10.16石油,139.7*7.72*R-2,177.8*9.19*R-2,244.48*11.05*R-2,244.48*10.03*R-2,273.05*8.89*R-3,339.72*9.65*R-2等。(2)API规定长度有三种:即R-1为4.88~7.62m,R-2为7.62~10.36m,R-3为10.36m-14m至更长。(材质扣型)J55石油套、K55石油套、N80石油套、P110石油套、偏梯扣石油套、长圆扣石油套、短圆扣石油套、J55偏梯扣石油套、J55长圆扣石油套、J55短圆扣石油套、K55偏梯扣石油套、K55长圆扣石油套、K55短圆扣石油套、N80偏梯扣石油套、N80长圆扣 |