API 5DP 石油钻杆生产商
merry.yao
钻杆规格:
1. drill pipe OD: 2 3/8',2 7/8", 3 1/2", 4", 4 1/2", 5" 5-1/2".
2. connection type:NC26,NC31,NC38,N0,N6,NC50,51/2FH
3. steel grade:R780,E75,X95,G105,S135
4. the type of upset:IU, EU,IEU,
5. length:6~12m
Drill joints specification
1. 接头规格:
OD:∮168,1∮58,∮152,∮127,∮123,∮123,∮121,∮105,∮75,∮86