Import Cylinder Liner For Pumps — Buy in wholesale FOB from Supplier in China

Dongying Zhaoxin Industry And Trade Co., Ltd manufactures bimetal cylinder liners for pumps that meet API 7K standards and ISO 9001:2000 quality system. Each liner combines a hot-forged carbon-steel outer sleeve with a high-chrome cast-iron inner sleeve produced by centrifugal casting. The inner sleeve achieves a tensile strength greater than 900000 psi and a post-heat-treatment hardness above HRC 62. The design tolerates mud-pressures up to 7000 psi and is rated for a service life of up to 800 hours.

The outer carbon-steel sleeve provides structural rigidity while the high-chrome inner sleeve offers superior wear resistance and corrosion protection, a combination widely used in mud-pump hydraulic components. Typical bimetal liners of this class have an outer diameter around 150 mm, a length near 200 mm and a diameter tolerance of +/-0.02 mm. Standard industry practice also calls for a smooth mirror-finished bore to reduce friction and extend wear life. Dongying Zhaoxin can produce a range of series such as F, PZ, 3NB, T, UNB and custom designs based on buyer drawings.

These liners are supplied to major Chinese oilfields including Shengli, Daqing and Zhongyuan, and are exported to more than 70 countries for use by oil-field service firms and pump manufacturers. Buyers typically request FOB or CIF terms, and can order either standard series or bespoke dimensions after confirming technical drawings. Minimum order quantities and lead times are not disclosed in the listing; prospective importers should contact the supplier to verify MOQ, payment conditions and shipping schedules. The company’s harbor-tier verification indicates compliance with basic trade credibility, though response metrics are currently unavailable.

Dongying Zhaoxin Industry And Trade Co., Ltd is situated at No 37 Qilianshan Road, Shenli Industry Park, Dongying, Shandong 257000, China. The firm holds a harbor-tier verification on the platform, indicating it meets basic supplier credibility criteria, though its current response rate is recorded as 0 %. Dongying Zhaoxin operates as a first-grade supplier for Sinopec-NPC, providing components to major oilfields across China.

The company’s production facility follows ISO 9001:2000 quality management procedures and adheres to API 7K specifications for pump components. Its product catalogue focuses on bimetal liners and related hydraulic parts, and it serves customers in over 70 countries, including the United States, Canada, Brazil and several European and South-Asian markets. No additional corporate history, revenue figures or client lists are disclosed in the source data.