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<title><![CDATA[EC21 Product Catalogs - api 11b]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/api_11b--2630/1/api 11b.html]]></link><item>
<title><![CDATA[Sucker Rod Coupling]]></title><link><![CDATA[https://theonly521zhao.en.ec21.com/Sucker_Rod_Coupling--9067645_9068096.html]]></link><description><![CDATA[Coupling ,sub-coupling ,polished rod coupling are designed in accordance with API SPEC 11B and made of fine carbon-steel or alloy steel(equivalent to AISI 1526 or AISI 4135).
Normally, they have two ]]></description><pubDate><![CDATA[20140724]]></pubDate></item>

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