Sucker rod coupling,class t sucker rod coupling,coupling, It's a steel screwed nipple. It's one kind of petroleum machinery part
Sucker rod coupling ,class t sucker rod coupling, coupling is our company's main product.It's a steel screwed nipple. It's one knid of petroleum machinery parts.
API Standard.
Grade: T & SM
Notes: The measures of products can be made according to the customers' requirement.
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