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normal style="MARGIN: 0cm 0cm 0pt">API Class SM coupling
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normal style="MARGIN: 0cm 0cm 0pt">1）Type: SM FS and SH coupling
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normal style="MARGIN: 0cm 0cm 0pt">2）Coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"
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normal style="MARGIN: 0cm 0cm 0pt">3)Weight: 0.41-1.29 KG/Pcs
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normal style="MARGIN: 0cm 0cm 0pt">4）Material: AISI 5I40
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normal style="MARGIN: 0cm 0cm 0pt">5）Spray Material：Ni60A Alloy Coating
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normal style="MARGIN: 0cm 0cm 0pt">6）SM Thickness：0.01-0.02in
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normal style="MARGIN: 0cm 0cm 0pt">7) Basic Hardness: HRC 16-23
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normal style="MARGIN: 0cm 0cm 0pt">8）Surface Hardness: HRC 55-62
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normal style="MARGIN: 0cm 0cm 0pt">9）Hole rate: ＜2%
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normal style="MARGIN: 0cm 0cm 0pt">10）Min. Hardness of the layer: 595HV0.2
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normal style="MARGIN: 0cm 0cm 0pt">11) Operating Temperature: -1000~400℃
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normal style="MARGIN: 0cm 0cm 0pt">12) Life: > 180 days
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13）Standard: API Spec 11B
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normal style="MARGIN: 0cm 0cm 0pt">14)Package: wooden case
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normal style="MARGIN: 0cm 0cm 0pt">15)Payment Terms: T/T
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normal style="MARGIN: 0cm 0cm 0pt">Our New Products
normal style="MARGIN: 0cm 0cm 0pt">1) SM Coupling with great bevel edge
normal style="MARGIN: 0cm 0cm 0pt">2) Two-way Cambered Protection Coupling
API FS sucker rod couplings
