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Hollow rod anti wear coupling (SM grade)
$1
Shandong, China
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Executive standard: SY/T5550-2012 Sucker Rod
Specification and type: KJG32/KJG34/KJG36/KJG38, etc
Length: Can be made according to user requirements and standards
Spray welding layer thickness: 0.254-0.508mm
Hardness of spray welding layer: not less than 595HV0.2
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