air-balanced sucker-rod pumping unit  气动平衡泵杆抽油机

airbalanced suckerrod pumping unit  气动平衡抽油机

coiled steel sucker rod  钢质连续抽油杆

Continuous Sucker Rod  连续抽油杆

double pin sucker rod  两头阳螺纹的抽油杆

Eccentric Wearing of Sucker Rod  管杆偏磨

eccentrically worn sucker rod and tubing  杆管偏磨

fiber glass reinforced plastic sucker rod  玻璃钢抽油杆

Fiberglass sucker rod  玻璃纤维抽油杆

fiberglass-reinforced polyester sucker rod  玻璃纤维增强的聚酯抽油杆

Fiberglass-steel Sucker Rod  玻璃钢-钢抽油杆

fiberglass—steel sucker rod string  玻璃钢—钢混合抽油杆

flexible continuous steel sucker rod  钢丝绳

Flexible sucker rod  柔性抽油杆

heating sucker rod  电热杆

Hollow Sucker Rod  空心抽油杆

hook sucker rod  组合; 装置

Long Plunger Sealing Sucker Rod Pump  长塞环封抽油泵

multi-stage sucker rod  多阶抽油杆柱

off-center wearing and parting of sucker rod and t  管杆偏磨