※Our History


Qingzhou Longyue Hydraulic Machinery Co., Ltd, was found in 2004, we are mainly supplier of hydraulic cylinder manufacturer.

We located in Qingzhou, near to Qingdao port and there are several expressway and high speed rail pass through here as well.

There are 50sets of advanced equipment and 100 skilled technical workers, annual output over 6000tons.

With technology accumulation, rich experience in past 15 years, our products widely gain recognition and praise from clients all over the world.

As the biggest manufacturer & wholesaler in local market, we could handle all sizes of Honed tube, Skived tube, Chrome plated shaft in material CK45, 1020, ST52, 20MnV6, 42CrMo4, 25Mn, 27SiMn.

Sincerely hope that it could be a chance for us to build cooperate relationship may from an inquiry.

※Our Product

Honed tube, Ready to honed tube, Chrome plated shaft, Chrome bar, Skived tube, Chrome plated tube, CDS tube, DOM tube,

Chrome rod, Hollow rod, Cylinder barrel, Honed barrel,

Material: ST52/E355/16Mn, ST35/E235/C20, CK45/S45C/45#, 20MnV6, 42CrMo4, 25Mn, 27SiMn etc


※Product Application

Use for each kinds of hydraulic cylinder, petroleum industry.

※Our Certificate

ISO9001, SGS, BV Certification



※Production Equipment

Honing machine

Skiving machine

Saw machine

Polishing machine

Cylindrical grinding machine

High-precision centerless grinding machine

CNC center


※Our Service

>Professional manufacturer & supplier of Honed tube, Chrome plated shaft for 15years.

>Biggest manufacturer & wholesaler in local market.

>Certification ISO9001:2015, SGS, BV, CNAS Certification;

>Experience in Saudi Arabia, UAE, Egypt, Russia, Singapore, Vietnam, Thailand, Brazil market

>Sub-tier supplier of Komatsu, Caterpillar, Hyundai etc.

>7*24 at your service, on time respond.

>One stop collection.