Cast Iron ring DI Stop Collars Manufacture

Dandong Pengxin a specialized manufacturer of high-precision DI Stop Collars with 25 years of experience in the industry.Our factory is ISO 9001 certified, ensuring strict quality control from raw materials to finished products,We are also the largest Chinese supplier with ductile iron rings to Saudi Aramco.

Our Product Strengths

Materials & Durability:

"Our Stop Collars are made of ductile iron 65-45-12,we choose automatic molding lines to produce these ductile iron rings,it not only ensures the stability of the castings but also significantly shortens the delivery time"

Precision & Standards:

"Tight tolerances (±0.01mm), compliant with [ISO/DIN/ANSI] standards. All products undergo 100% hardness testing, dimensional checks, and salt spray tests."

Customization:

"Wide range of sizes (ID: 45.5–458.6 mm, OD: 47.8–850.2 mm) and support for non-standard designs based on drawings/samples."

Production & Supply Capability

Capacity: "Monthly output of 50,0000 pieces with lead times as short as 15 days for standard orders."

Reliability: "Stable raw material supply and flexible MOQs to meet urgent demands."

Customer-Centric Services

Samples & Support: "Free samples available for evaluation. Dedicated engineering team for technical assistance."

Logistics: "Efficient packaging (anti-rust/VCI) and global shipping arrangements."

After-Sales: "Quality guarantees and 24-hour response for any issues."

*"As a leading DI Stop Collar manufacturer, we combine precision engineering (ISO 9001 certified) with agile production to deliver durable, custom-sized collars for industrial applications. With 25 years of serving clients in Saudi Aramco, we ensure on-time delivery, competitive pricing, and full traceability. Let’s discuss how we can meet your specifications! "