Home - YingNaiSi Machinery Manufacturing Co.,Ltd

Specialized in Excavator Hydraulic Cylinder Manufacturing

Customizable · High-Pressure Durable · Export-Grade Quality Engineered for tough working conditions – Your expert solution for construction machinery cylinders

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Cold drawn/Cold rolled tube

Professional cylinder tube manufacturer over 20years experience

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Professional Housing for ESP Manufacturer

High-strength alloy | Precision-machined | Designed for harsh oilfield environments Custom fabrication based on drawings – Supporting both surface and downhole systems 15+ years of export experience, trusted by global oil & gas partners

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About Us – YNSTUBE Precision Tubing Solutions

Jiangsu YingNaiSi Machinery Manufacturing Co., Ltd. (YNSTUBE) is a professional manufacturer and exporter specializing in precision seamless steel tubes, hydraulic cylinder pipes, and custom-engineered tubing solutions for demanding industrial applications.

With about 20 years of experience serving clients across Europe, the Middle East, Southeast Asia, and North America, we have built a reputation for quality, reliability, and flexible customization.

Our Core Products