1.The polished rod clamp is of hinge-jointed butterfly structure, it is fixed on the polished rod as retaining device for the rope hanger. It makes the pumping unit horsehead connected with polished rod through rope hanging device, and then the polished rod append and supprt the load of sucker rod string. The polished rod clamp is an important part connecting oil pump and sucker rod, it is required not only reliable, have a certain capacity, but also can not cause damage for sucker rod.

2.We can supply full line of polished rod clamps and other casting parts according to customers' requirements as a professional supplier. All of its technical specifications meet the oil and gas industry standard SY/T5029-2003 and the American Petroleum Institution API SPEC 1B standard. It adopts precision casting,normalized thermal treatment and fine process in production,and fully tested after finished production to make it function well in use

 Material of Clamps: 45#(AISI 1045),35Mn2A(AISI1536M), 25MnVA(AISI 1526/1526M)

 Hardness Scale：190HB-300HB

Rated Workload： Each polished rod clamp design shall have a stated maximum load rating. The maximum rated load shall be no more than 75 % of the minimum load to initial slippage when a new polished rod clamp which has successfully completed validation testing per F.3 in accordance with API Spec11B(27th).

Type: As per stated workload: type WL12000, type WL 16000，type WL18100

As per structures: Single Bolt (One Layer), Two Bolts (Two Layers), Three Bolts (Three Layers).

Sizes: Φ25（1") , Φ28(1-1/8"), Φ32(1-1/4"), Φ35(1-3/8"), Φ38(1-1/2"), Φ41(1-5/8")

Suitable for polished rod size:19mm, 22mm, 25mm, 28mm, 32mm, 38mm, 45mm, 50mm

Polished rod work load: 160KN --800KN

Structure composites: fasting bolt, fasting nut, clamp body, hinge, and fixed washer set