normal style="MARGIN: auto 0cm">Our sucker rod couplings are up to API Spec 11B standard, including class SM coupling, class T coupling, Sub coupling, Full Size coupling, Slim Hole coupling, are availbale in 5/value="8" HasSpace="False" Negative="False" NumberType="1" TCSC="0">8”, 3/value="4" HasSpace="False" Negative="False" NumberType="1" TCSC="0">4”, 7/value="8" HasSpace="False" Negative="False" NumberType="1" TCSC="0">8”, value="1" HasSpace="False" Negative="False" NumberType="1" TCSC="0">1” and 1 1/value="8" HasSpace="False" Negative="False" NumberType="1" TCSC="0">8”. Manufactured with high quality Carbon steel AISI 5I40 /4135 . Our surface alloy thermal spray coating process of our Spray metal Coupling has reached the international advanced level.

API Coupling, class SM

1Material: AISI 5140 (40Cr),

2Standard: API Spec 11B

3Coat Thickeness: 0.01value=".02" HasSpace="True" Negative="True" NumberType="1" TCSC="0">-0.02 in

4coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"

5Basic Hardness: HRC 16-23
6Min.metal coating hardness: 595 HV0.2

normal style="MARGIN: auto 0cm">OUR NEW SPECIAL PRODUCTS

normal style="MARGIN: auto 0cm">Both-way Protection Globoidal Sucker Rod Coupling

normal style="MARGIN: auto 0cm">Full Size Sprey metal Coupling with Big Chamfer

We're the special manufacturer, and the cost is much lower than some Inter-trade enterprise ,but we can supply more excellent quality, to build a long-term business relationship with you.

For more information, please do not hesitate to inform us at any time.

Email: nancy[at]ytyunsheng[dot]com
MSN:yunsheng_nancy[at]hotmail[dot]com