钻杆护丝帽型号：NC26 NC31 NC36 NC38 NC40 NC46① NC46② NC50① NC50② NC50③ 6-5/8REG NC66 NC61 7-5/8REG NC70 3-1/2REG 3-1/2FH 4-1/2REG 4-1/2FH 5-1/2REG 5-1/2FH NC50 2-3/8REG ( 230A 231A) 2-7/8REG(230 231) 3-1/2REG (330 331) 4-1/2REG (430 431) 5-1/2REG (530 531) 6-5/8REG ( 630 631 ) 7-5/8REG (730 731 ) 8-5/8REG (830 831) 2-7/8FH ( 220 221) 3-1/2FH (320 321) 4FH (420A 421A) 4-1/2FH(420 421) 5-1/2FH (520 521 ) 6-5/8FH (620 621) 2-3/8IF (210A 211A) 2-7/8IF (210 211) 3-1/2IF (310 311) 4-1/2IF (410 411) 4IF (410A 411A ) 5-1/2IF (510 511 ) NC35 NC44 NC56 NC61 油管护丝型号： 2-3/8NU 2-3/8EU 2-7/8NU 2-7/8EU 3-1/2NU 3-1/2EU 4-1/2NU 4-1/2EU 4-1/2STC 4-1/2LTC 4-1/2BTC 5LTC 5BTC 5-1/2STC 5-1/2LTC 5-1/2BTC 6-5/8BTC 7STC 7LTC 7BTC 7-5/8LTC 7-5/8BTC 8-5/8STC 8-5/8LTC 8-5/8BTC 9-5/8STC 9-5/8LTC 9-5/8BTC 10-3/4STC 10-3/4BTC 13-3/8STC 13-3/8BTC 20STC 20BTC 河北沧州临港东方制造有限公司专供胜利油田各种型号石油钻杆钻铤护丝帽，石油套管护丝帽，抽油杆护丝帽。价格低廉，质量上乘