Jiangsu YingNaiSi Machinery Manufacturing Co., Ltd. was founded in 2005, with covering an area of more than 28000 Square meters, more than 100 employees. a specialized manufacturer and exporter of high-quality precision steel tubes and hydraulic cylinder components, with over 20 years of experience in serving global industries.

Located in Changzhou, China, our factory is equipped with advanced cold-drawing, honing, and heat treatment lines, ensuring strict dimensional tolerances and superior surface finishes. Our main products include cold drawn seamless tubes, honed tubes, hydraulic cylinders, and customized steel tubing solutions for ESP systems, construction machinery, and hydraulic applications.

We proudly supply our products to clients in Europe, the Middle East, Southeast Asia, and North America. Our long-term partners include global oil & gas companies, equipment manufacturers, and hydraulic solution providers.

At YNS, we are committed to quality, reliability, and customer satisfaction. Every tube we deliver is manufactured in accordance with international standards such as ASTM, DIN, and GOST, and undergoes strict quality inspections before shipment.

Whether you need standard tubing or custom-engineered solutions, we are here to support your business with competitive prices, stable lead times, and responsive service.

Let’s build a long-term partnership together.