3 To 190 Tons Large OEM Cast Steel Casting for Cement Mill/shipbuilding/forging Press

Factory door

Office building

Testing center with CNAS approval

Our factory is locatd in Sunzhuang town,Haian,Nantong,Jiangsu,China.

When you visit us,we can pick up you from Shanghai Pudong airport.

From our factory to the airport will be around 2.5 hours.

1)Pattern making

We normally use wooden patterns.

The patterns will be made according to engineer's desgin.

Before we use the pattern,our engineer will check the dimension and make a record.

If the quantity for same casting is more than 10pcs,the pattern will be free.

wheel hub pattern

stern boss pattern

bearing housing pattern

We will only store the pattern for our customer one year to save space.

2)Sand cores making

Most of the sand cores are made by silica sand.

For important position or R corner,we will use chorme ore sand.

We use the silica sand to form the pattern and input CO2 to harden it.

We have around 80 technicians for sand mold making.

Most of them has more than 10 years' experience.

sand cores for sheave

sand cores for mill housing

chorme ore sand cores

3)Melting and Pouring

We do the melting in the mid-night and do the pouring in the morning.

We will check the chemical composition befoe and after pouring.

4)Heat treatment

We can do the normalizing and tempering.

It will be 4 days for normalizing and 3 days for tempering.

Quenching will be done by our sub-contractor if needed.

The size for our max. heat treatment furnace is 12m*8m*6m,

it is also the biggest size of castings we can make.

12m*8m*6m heat treatment furnace

120 tons rotary shot blasting machine

5)Machining

Before we do the machining,we will check the margin and draw a line.

half gear

segement mill head

casting for steam turbine

We have 3.5m to 10m vertical lathes.

We also have 10 sets of milling and boring machines.

We have one 5x16m  and 2.5x6m CNC planer type milling machines.

10m vertical lathe

milling and boring machine

5x16mCNC planer type milling 

We can do rough or finished machining according to customers' requirement.

stern tube machining

stern boss machining

mill head machining

forging press part

sheave

grinding table

We have all class certificate,such as DNV,LR,BV,NK,ABS,CCS and so on.

We also get approval from CNAS.

For oil and gas,we have API certificate.

ABS

BV

CCS

DNV

LR

NK

CNAS

CNAS

1)Chemical compositon

Before and after pouring,we will do the chemical composition test.

2)NDT

After first rough machining,we will do UT and MT to check the crack or inside defects.

roll chock inspection

rocker arm inspection

punch mold inspection

stern boss inspection

mill housing inspection

grinding table inspection

Before delivery,we will do enough protection on the machining surface,such as anti-rust oil,soft rubber or other  seaworthy packing.

gear wheel in wooden case

sheave in wooden case

kiln tyre packing

punch and die tooling packing

support roller packing

hollow shaft packing

After packing,we will send our goods to customers from Shanghai airport.

108 tons stern boss delivery

segement mill head

56 tons bed frame

casting for bridge

110 tons grinding table delivery

casting