Full-chain capability covering R&D, manufacturing, installation and after-sales service — serving more than 30 countries worldwide from Hengshui, Hebei.
Hebei Baoli Engineering Equipment Corporation Limited was established in July 1993 in Hengshui, Hebei, with registered capital of RMB 257 million and a 400,000 ㎡ production base in the North Industrial Base of Hengshui Economic Development Zone. It is the core enterprise of BAOLI Group.
BAOLI Group focuses on rubber-based equipment for the bridge and water-conservancy sectors, with 7 subsidiaries serving 30+ countries and delivering integrated R&D, manufacturing, installation and service for large-scale infrastructure projects. On the water-conservancy side that means rubber dams — inflatable weirs and air shield dams — from compound mixing through to on-site commissioning.
Baoli is the supporting institution of the Hebei Engineering Rubber Technology Research Center and a member of the National Rubber Standardization Technical Committee (Engineering Rubber Working Group) — the group that helps write the standards our industry is measured against.
Key dates from the company record — certification years are the years the systems were first obtained.
Hebei Baoli Engineering Equipment Corporation Limited established in July 1993 in Hengshui, Hebei, with registered capital of RMB 257 million.
Quality management system certification obtained — the start of formalized process control across mixing, calendering and vulcanizing.
Environmental management system certified in 2009 — clean production and standardized waste treatment across the whole plant.
9 major categories and 3,000+ specifications, 400+ patents, annual output value of RMB 1.5 billion, and rubber dam projects across China.
Independent R&D backed by patented technology for continuous product improvement.
Total Patents
Invention, utility model and design patents
Rubber Dam Patents
New structures, bag manufacturing and products
Software Copyrights
Remote monitoring and automatic control systems
Technical Solutions
Engineered designs for specific hydraulic projects
Clamping force of 13,738 t and dam bag fabrication height up to 7.5 m — enabling large-scale integrated moulding without longitudinal seams.
Avoids secondary ageing; fewer splice seams deliver better air-tightness and operational safety.
Automatic and manual dam raising/lowering, emergency deflation on power loss, upstream and downstream level monitoring, and remote APP control.
Representative patented technologies: estuary bidirectional water-blocking rubber dam, radial support-enhanced structure for extra-high dams, high-dam optimized anchoring assembly, remote monitoring and automatic inflation/deflation control system, automatically controlled flip-type rubber dam, and an optimized dam bag profile with peripheral accessories.
Equipment chosen specifically for rubber dam production — from compound mixing to embedded bolt manufacturing.
Clamping force 13,738 t; bag fabrication height up to 7.5 m. Seamless overlap splicing produces full-width dam bags with no longitudinal joints, reducing leakage risk and raising structural strength.
Working pressure up to 4 MPa increases bag density and rubber-to-canvas bonding — reliably avoiding delamination and extending service life.
USD 9.59 M investment and 21 m tall. Automatic metering and feeding produce identical compound batches with zero weighing error.
One-shot vulcanization forming with 1.5 m fabric width reduces internal lap joints — better air-tightness, safety and surface flatness.
Maximum calendering width of 1.83 m with automatic double-side gluing — higher efficiency and consistent product quality.
A fully automatic line for rubber sealing parts. Stable vulcanization ensures uniform rubber performance with high continuous output.
Shapes steel plates up to 30 mm thick in a single pass, protecting the material's internal structure without repeated forging — precise embedded plates.
Standardized in-house production of embedded anchor bolts. Hot-dip galvanized bolts and sherardized U-bolts for long-term underwater protection.
Complete pump-room renovation and construction with standardized piping and professional on-site installation for the filling and emptying system.
Additional production assets include mixing, calendering, plate forming and bolt machining lines, all located inside the 400,000 ㎡ base — so critical processes are never outsourced.
Strict multi-level inspection with full traceability — from incoming raw material to outbound delivery.
Raw material incoming inspection — chemical analysis and mechanical property testing from the source.
In-process production inspection — on-line quality checks and controlled process parameters during mixing, calendering and vulcanizing.
Finished-product delivery inspection — complete item testing before shipment.
Global water engineering · rubber dam solution provider since 1993. Factory audit visits are welcome — we can arrange an online video tour of the production line.
