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Picture	Titel	Update
	Drilling Rod Sucker Rod Coupling (AISI 5140) 1)Type: FH SM coupling2)New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer3)Material: Hi
	oil drilling equipment API 3/4" to 7/8" Class SM SUB Sucke Rod Coupling 1)Function: The sub sucker rod couplings are used to connect two varisized sucker rod. 2)Basic Material: High quality ca
	API class SM sucker rod coupling Sucker Rod CouplingTYPECLASS SM COUPLING(SM)SPEC(in)O.D. +0.13(＋0.005)-0.25(-0.010)(in/mm)I.D.+0.13(＋0.005)-0.25(-0.0
	7/8" sucker coupling for oilfield SMcoupling for sucker rod in details:1. Steel bars for raw material, good alloy AISI 5140(40Cr). 2. CNC precision sizes.
	API T sucker rod coupling Yunsheng founded in 1997 is a professional and special manufacturer, distributor and service company of oilfield down ho
	API 5/8'' class sm sucker rod couplings API 5/8 Class SM Full Size Sucker Rod Coupling 1) Material: AISI 51402) Standard: API Spec 11B 3) Main specification:OD:
	coupling sucker rod coupling Detailed introduction to coupling sucker rod coupling:Yunsheng sucker rod couplings are up to API Spec 11B standard, inc
	5/8" drilling rod coupling for sucker rod Drilling rod coupling for sucker rod in details:1. Steel bars for raw material, good alloy AISI 5140. 2. CNC precision s

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