About SYI Group Information :

• About SYI Foundry

SYI Foundry has been involving in casting business for more than 20 years. Based on good quality, competitive price, on-time delivery, we've got great reputation all over the world. Not only do we have advanced equipments, but also own a very strong engineering team. Some of our engineers have been working in casting fields for over 30 years.

All castings shall be smooth and free from sand holes, blow holes, distortion or any other defects.

With annual production capacity of 35,000 tons, our major equipments include 2 sets of automatic moulding lines, 4 sets of 5-ton cupola, 2 sets of load test machines, 1 epoxy coating machine, 3 sets of core-shooting machines, 3 sets of shot blasting machines, 2 sets of water pressure machines, 2 machining workshops and all necessary chemical and physical test facilities.

GUARANTEE: SYI Foundry will replace any Heavy Duty covers/gratings, that has been properly installed and broken in normal use, free of charge after receipt of the broken casting. 

Ductile & Graphite Iron Casting Manhole Covers

 Design & Production Facility & Quality Control :

• Design

Ductile & Graphite Iron Casting Manhole Covers

• Production Facility

Besides traditional hand moulding, we also use Automatic Moulding Lines to manufacture manhole covers for better surface condition and dimension accuracy.

Ductile & Graphite Iron Casting Manhole Covers

• Quality Control

Quality Control Department  ↓ ↓ ↓

Raw Material Inspection

• Raw Material inspection including chemical
• components analysis, tensile strength test and etc. 

Quality Control Groups

• Dimensions Test
• Manufacture process Inspection
• Process Inspection including sand cleaning, assembling, packing and coating
• Final Inspection including delivery marks and etc.
• Particular Tests for different products, such as Load Test, Hydro Test and etc. 

Laboratory

• Chemical Components
• Microstructure Test
• Tensile Strength

Ductile & Graphite Iron Casting Manhole Covers

• Permanent Set and Load Test