Dear Sir,
I am Jerry from Yunsheng Petroleum Machine Fittings,Co,.Ltd. which has passed the ISO 9001-2000 and API SPEC 11B Certifications. Our main product is API sucker rod coupling. we want to offer API sucker rod coupling in discount price now. we would also procure sucker rod for you without any extra profit from our long established brotherhood company.
API Sucker Rod Coupling, Class SM:
1、Material: AISI 5140 (40Cr),
2、Coat Thickeness: 0.01-0.02 in
3、Basic Hardness: HRC 16-23
4、thermal spraying coating and rolled thread
We look forward to your trial order and your opinions on our other cooperation mode such as OEM of sucker rod coupling for you .
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