Grade SM Couplings

Date: 28 Jun 2010
Our company can produce different kinds of API Grade SM sucker-rod couplings.
Performance index as follows:
Specification
Grade
Basic metal hardness
Standard hardness (HRA)
Equivalent hardness (HRC)
PJG5/8
PJG3/4
PJG7/8
PJG1
SM
56~62
(16~23)
Contact information:
Company:
Address:
Shengli Oilfield Freet Petroleum Equipment Company Limited
No.203 Nanyi Road, Dongying, Shandong, China[257082]
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