About Dongli Petroleum Machinery
Shijiazhuang Dongli Petroleum Machinery Co., Ltd. (DLSY) builds and supplies complete pumps and replacement fluid-end parts for the global oil and gas, drilling and well-service industries. We combine our own manufacturing with a deep aftermarket parts inventory so buyers can source complete units and the wear parts that keep them running from one partner. Recognized as a high-tech enterprise in Shijiazhuang, DLSY operates a 20,000 m² manufacturing plant, and our products have been delivered to more than 50 countries and regions.
Our story
What we stand for
Certifications
Third-party verified quality credentials — click any certificate to download the original PDF.
API Spec Q1, 10th Edition Registration Q1-7476 · Design and manufacture of piston mud pump components · valid to June 2, 2027 PDF ↓ 
API 7K Monogram License License 7K-0401 · Right to apply the official API Monogram on piston mud pump components · valid to June 2, 2027 PDF ↓ ISO 9001:2015 Certificate 04526Q01248R202 · Processing and service of petroleum special mud pump accessories · UKAS-accredited PDF ↓ 
ISO 9001:2015 / GB/T 19001-2016 Certificate U919123Q30412R1S · Processing and service of petroleum special mud pump accessories · first certified 2020, valid to Apr 16, 2026 🔍 What we do
- Manufacture complete reciprocating pumps for drilling and well service.
- Stock 900+ fluid-end and power-end replacement parts, cross-referenced to major brands.
- Match parts to your pump model and application, worldwide, with fast export shipping.
Global reach
Headquartered in Shijiazhuang, China, Dongli serves customers on three continents through local offices in the Middle East, Africa and South America, plus direct export worldwide.
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