Cast Iron Gearbox Housing
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Cast Iron Gearbox Housing

Ningbo Supreme Machinery Co., Ltd is a professional gray iron and ductile Iron casting manufacturer and supplier in China. We produce Grey Iron, Ductile Iron and Steel Castings for auto part including cast iron gearbox housing, brake drum, crankshaft, connecting rod, clutch plate, cylinder body.

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Product Description

Ningbo Supreme Machinery Co., Ltd is a professional Cast Iron Gearbox Housing manufacturer and supplier. The cast iron gearbox housing is made of ductile cast iron GGG40.

Supreme machinery uses resin sand casting process.


Part Name

Cast iron gearbox housing




Sand Casting / Clay Sand Casting / Green Sand Casting/ Resin Sand Casting

Material Grade


Surface treatment

painting, polishing, heat treatment, or galvanization etc.


complete machining such as Machining center, CNC, Lathe, Milling machine,drilling etc.

Size and design

As per the customer's drawings and requirements

As per the customer's samples


Normal export packaging

As per customers' requirements


100% Inspection

Third Party inspection available upon customers requirements

Material Features

GGG40 ductile iron is a very common material in European standard DIN 1693

It has high strength, plasticity, toughness, wear resistance, severe thermal and mechanical shock resistance, high or low temperature resistance, corrosion resistance, and dimensional stability 

Chemical Component

DIN 1693


C %

Si %

Mn %

P %

S %








Properties of GGG40

Tensile strength ≥ 400 Mpa.

Yield strength ≥ 250 Mpa.

Elongation ≥ 15%.

No impact requirement.

Hardness ofGGG40

The hardness of this ductile cast iron grade is between 130-180 Brinell hardness.

Density of GGG40

The density of this ductile iron grade is about 7.3 g/cubic centimeter, or 7.3 kg/liter.


Production Process

We have updated our production line for making cast iron gearbox housing. Our production process include resin sand molding line, shell molding line, green sand casting and lost wax investment casting production process.

Machining Workshop

We have full set line of machining facilities, various CNC equipment and Machining Center can meet customers’ requirements. After machining, the casting parts will be completed. Then, they will be inspected and packed for delivery and shipment.

Quality Control

Checking the raw material after they reach our factory------- Incoming quality control

Checking the details before the production line operated

Have full inspection and routing inspection during mass production---In process quality control

Checking the goods after they are finished---- Final quality control

Checking the goods after they are finished-----Outgoing quality control

Packing and Delivery

Packaging of cast iron gearbox housing can be customized based on customer requirements to meet the different needs, such as plastic bag, carton box,  wooden case, crate, etc.

Hot Tags: Cast Iron Gearbox Housing, Manufacturers, Suppliers, China, Factory, Buy, Made in China

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