Square Washers
Square plate washers for timber construction and heavy structural bolting. Custom dimensions and hole sizes av...
View detailsLoading precision components
Liaocheng Huamao Jinggu Metal Technology Co., Ltd delivers a one-stop production service with full industry-chain control — from raw steel coil to finished washers and custom stamped parts for machinery, automotive, construction and export clients worldwide.
HUAMAO JINGGU Metal Technology Co., Ltd, located in Zhengjia Town, Liaocheng, Shandong, is a source manufacturer integrating raw-material flattening, stamping processing and finished-product customization. With mature processes, stable capacity and strict quality control, we are a trusted supplier of carbon steel flat washers, high-strength washers and custom stamped parts.
From raw material procurement to finished product delivery, we control the entire process in-house — our own flattening and shearing workshop guarantees stable material supply, and two specialized stamping lines handle both large and small precision washers efficiently.
Annual Production
Skilled Staff
Countries Served
On-Time Delivery
From die design to export logistics, our team supports partners at every stage of the fastening-component supply chain.
Factory-direct sales with no middlemen. Standard packaging: plastic bags (1–5 kg) and cartons (25–50 kg), custom pallets available. Stock ships in 3–7 working days, OEM orders in 7–15 days. Main ports: Qingdao, Shanghai, Tianjin.
Learn moreMultiple quality inspection processes from raw materials to finished products — dimensional checks, surface inspection and full-item testing ensure every washer is precise, smooth-edged and defect-free.
Learn moreCost-effective black oxide for general anti-rust needs, electro-galvanizing with a bright finish, and hot-dip galvanizing for superior corrosion resistance in outdoor or harsh industrial environments.
Learn moreOur own flattening and shearing workshop processes steel coils into flat sheets with uniform thickness — guaranteeing a stable supply of high-quality raw material, unaffected by external market fluctuations.
Learn morewashers, stampings and fastening solutions manufactured to international standards and ready for export.
Square plate washers for timber construction and heavy structural bolting. Custom dimensions and hole sizes av...
View detailsExternal and internal tooth lock washers for maximum grip under vibration. Suitable for electrical enclosures,...
View detailsSingle-coil spring lock washers conforming to DIN 127. Provides vibration resistance for bolted joints in mach...
View detailsPrecision flat washers manufactured to DIN 125 / ISO 7089 for load distribution and surface protection. Availa...
View detailsSend us your drawings, specifications or product photos. Our engineering team will review and reply with pricing, lead time and material recommendations within 24 hours.
Industry knowledge, quality practices and export updates from HUAMAO JINGGU.
Selecting between flat, spring and lock washers depends on load, vibration and environmental exposure. This guide breaks down the ...
A look at the inspection stations, calibration schedule and documentation that keep our quality system certified.
Palletizing, moisture protection and labeling best practices for ocean freight shipments of washers and stamped parts.