new api 5d oilfiled drilling rig kelly bar
1.OD:2 1/2", 3",3 1/2", 4 1/4", 5 1/4", 6". 2.Usage: For well drilling 3.Standard: api spec 5D 4.Lowest price.
new api 5d oilfiled drilling rig kelly bar
1.OD:2 1/2", 3",3 1/2", 4 1/4", 5 1/4", 6". 2.Usage: For well drilling 3.Standard: api spec 5D 4.Lowest price.
new api 5d oilfiled drilling rig kelly bar