Direct Factory for Custom Iron & Steel Castings
Wenzhou Dingzhu Metal Products Co., Ltd. is a direct manufacturer specializing in ductile iron, grey iron, and steel castings. Located in Hebei Province, China.
We are not a trading company. You work directly with our engineering team and production floor.
Company Overview
Wenzhou Dingzhu Metal Products Co., Ltd. was established in 2005 as a specialized casting manufacturer. We operate our own foundry with complete production lines for sand casting, investment casting, and CNC machining.
Our factory covers 15,000 square meters with 120 employees, including 18 engineers and technicians. We serve OEM customers in Europe and North America across automotive, industrial equipment, and valve industries.
Annual Production Capacity: 5,000 tons of iron and steel castings. We accept orders from 10 pieces (for prototypes) to 50,000+ pieces (for mass production).
Our engineering team reviewing technical drawings for a custom valve body project
Manufacturing Capabilities
Casting Processes
- • Sand Casting (Green Sand & Resin Sand)
- • Investment Casting (Lost Wax)
- • Shell Molding
- • Weight Range: 0.5 kg - 500 kg
Materials
- • Ductile Iron (GGG40, GGG50, GGG60)
- • Grey Iron (GG20, GG25, GG30)
- • Carbon Steel (1020, 1045, 8620)
- • Stainless Steel (304, 316, 410)
Machining Services
- • CNC Milling & Turning
- • Drilling & Tapping
- • Surface Grinding
- • Tolerance: ±0.05mm
CMM (Coordinate Measuring Machine) inspection ensures dimensional accuracy within ±0.05mm
Quality Control System
We maintain ISO 9001:2015 certified quality management system. Every casting undergoes multiple inspection stages before shipment.
Incoming Material Inspection
Spectrometer testing for chemical composition verification
In-Process Inspection
Mold inspection, pouring temperature control, cooling time monitoring
Final Inspection
CMM dimensional check, surface finish verification, pressure testing (for valve bodies)
Documentation
Material certificates, inspection reports, and test records provided with every shipment
Why Choose DingZhu
Direct Factory Pricing
No middleman markup. You negotiate directly with our sales and engineering team. Transparent pricing structure.
Engineering Support
Our engineers review your drawings for free. We suggest design modifications to reduce weight, improve castability, and lower costs.
Flexible MOQ
We accept small batch orders (10-50 pieces) for prototypes and testing. No need to commit to large quantities upfront.
Quality Guarantee
ISO 9001:2015 certified. Full inspection reports and material certificates provided. 100% dimensional inspection before shipment.
Fast Turnaround
Quote within 24 hours. Sample production in 15-20 days. Mass production lead time: 30-45 days depending on quantity.
One-Stop Service
From pattern making to machining, surface treatment, and packaging. We handle the entire process in-house.
Certifications & Compliance
Quality Management System
Wenzhou Dingzhu Metal Products Co., Ltd.
We comply with REACH, RoHS, and other international standards for export to Europe and North America.
Ready to Start Your Project?
Get a competitive quote from a trusted China factory within 24 hours. Send us your drawings or samples today.