1\" full size
1.)material :40Cr or other
2.)standard: API SPEC11B
3.)Feature:
1.Coat Thickness( in ): 0.01in-0.02in
2. Surface hardness: HRC56-62
Basic hardness:HRA56-62
3.Life: > 180days
4.Min. Tensile Strength: 655 Mpa
5. phosphorylate or not (according to demand)
4.) Hole rate:
2.)standard: API SPEC11B
3.)Feature:
1.Coat Thickness( in ): 0.01in-0.02in
2. Surface hardness: HRC56-62
Basic hardness:HRA56-62
3.Life: > 180days
4.Min. Tensile Strength: 655 Mpa
5. phosphorylate or not (according to demand)
4.) Hole rate:
Main Products
sucker rod coupling sucker rod