China Foundry Large Cast GS52 Rudder Carrier for 99000cbm Gas Carrier with Dnv Certificate
Product Description
The material is low carbon steel castings from 3 to 190 tons.
| S/N | Type of Ship |
| 1 | 1800/1900/2400/2600/3300/4600/7000/1400011800/15000/15500/16000/24100 TEU container vessel |
| 2 | 59000DWT bulk carrier |
| 3 | 156800DWT crude oil tanker |
| 4 | 7900/16300 DWT chemical/oil tanker |
| 5 | 99000CBM gas carrier |
| 6 | 174000m3 LNG carrier |
| 7 | 7600CEU Dual fuel PCTC |
Performance list:
| S/NO. | COUNTRY | SHIPYARD | PROJECT | DESCRIPTION/SPECIFICATION | YEAR | |||
| COMMODITY | UNIT WEIGHT |
FLAG/CLASS
|
QTY | |||||
| 1 | China |
Jiangsu New Yangzi Shipbuilding Co.,Ltd
|
2400TEU Container Vessel | FWD boss | 1.5T | DNV.GL/NK | 5 | 2023 |
| AFT boss | 31.5T | 5 | ||||||
| 2 | China | Jiangsu New Yangzi Shipbuilding Co.,Ltd | 1800TEU Container Vessel | FWD boss | 1.5T | ABS/CCS/NK | 20 | 2023 |
| AFT boss | 30T | 20 | ||||||
| 3 | China |
Jiangsu Yangzijiang Shipbuilding Co.,Ltd
|
59000DWT Bulk Carrier | Fore Stern Casting | 2T | CCS | 2 | 2023 |
| AFT Stern Casting | 14T | 2 | ||||||
| 4 | Korea | Samsung heavy industries | 156800DWT Crude oil Tanker | Fore Stern Boss Casting | 2.6T | ABS | 4 | 2023 |
| AFT Stern Boss Casting | 24.7T | 4 | ||||||
| Hub casting | 17.8T | 4 | ||||||
| TIP CASTING | 1.41T | 8 | ||||||
| 5 | China | Jiangsu yangzi xinfu shipbuilding Co.,Ltd | 11800TEU Container Vessel | Fore Stern Boss Casting | 8.2T | LR | 6 | 2023 |
| AFT Stern Boss Casting | 66.8T | 6 | ||||||
| 6 | China | Hudong Shipyard Group Co.,Ltd | 24100TEU Container Vessel | Fore Stern Boss Casting | 11.8T | DNV | 4 | 2023 |
| AFT Stern Boss Casting | 59.5T | 4 | ||||||
| 7 | China | Jiangnan Shipyard Group Co.,Ltd | 24100TEU Container Vessel | Fore Stern Boss Casting | 11.8T | DNV | 4 | 2023 |
| AFT Stern Boss Casting | 59.5T | 4 | ||||||
| 8 | China | China Merchants Jinling Shipyard (Yangzhou) Dingheng Co.,Ltd. | 7990DWT Chemical/Oil Tanker | Fore/AFT Stern boss | 5.8T | CCS | 2 | 2023 |
| Upper/lower rudder horn | 3.5T | 2 | ||||||
| 9 | China | Jiangsu yangzi xinfu shipbuilding Co.,Ltd | 24000TEU Container Vessel | Fore Stern Boss Casting | 2T | DNV | 6 | 2023 |
| AFT Stern Boss Casting | 73T | 6 | ||||||
| Stem casting | 17T | 6 | ||||||
| 10 | China |
Jiangsu New Yangzi Shipbuilding Co.,Ltd
|
2600TEU Container Vessel | FWD boss | 2.5T | ABS/NK | 10 | 2023 |
| AFT boss | 31.5T | 10 | ||||||
Haian Haitai Casting Co.,Ltd. is established in 2003 in Huangqiao Town.
In 2007,we moved our factory to Sunzhuang town and now we can supply bigger steel castings with max. weight 45 tons.
In 2011,we built a new sand mold maiking workshop with 120 tons refinining furnace and the max. weight can be 120 tons.
In 2013,we paid more attenion on the castings for shipbuilding and started to supply marine castings for most of domestic famous shipyards.
From 2013 to 2023,we bought more and more machines to strengthen our ability from rough machining to finished machining.
In 2023,we built another new sand mold making workshop for the quick development of market requirement.
Now we monthly supply 6000 tons different castings for different customers of different industry,such as cement mill,shipubuilding,petroleum machinery,rolling mill,forging press and so on.
1)Pattern making
We have our own wooden pattern making workshop.
But our company is always busy,
we also have around 10 sub-contractors for pattern making.
They help us for the pattern but will be inspected according to our rules.
We will record for every pattern inspection.
We have around 80 technicans for sand core making which is divided into around 10 teams.
Most of the technicans has more than 10 years' experience.
Most of the sand core is made by silica sand with common sand inside of it.
The common sand will be used repeatly.
For some important position,such as R corner,we will use chorme ore sand.
The outside of the sand core,we will do the painting,burn and clean it.
We will assemble diffrent sand cores together and wait for pouring.
3)Melting and Pouring
We always do the melting after mid-night for cheaper electric charge.
And we normally do pouring in the early morning.
| No. | Equipment Name | Quantity(Set) |
| 1 | 25 tons Electrical Arc Furnace | 1 |
| 2 | 50 tons Intermediate Frequency Furnace | 2 |
| 3 | 120 tons Refining Furnace | 1 |
| 4 | 120 tons VD Furnace | 2 |
4)Cooling
After pouring,we will wait for different time for cooling according to casting's weight.
| Item | Weight in blank(Metric Tons) | Cooling Time(Hour) |
| 1 | <25 | 48 |
| 2 | >25-40 | 72 |
| 3 | >40-55 | 96 |
| 4 | >55-72 | 120 |
| 5 | >72-96 | 144 |
| 6 | >96-115 | 168 |
| 7 | >115 | 192 |
We have our experience and rules for cooling time.
After cooling,we will shake the casting out of the steel boxes and clean them.
5)Heat Treatment
Normalizing will be 3 days while tempering is 4 days.
We have around 10 sets of heat treatment furnaces.
The biggest one is 12m*9m*6m.
It is also the biggest size of castings we can make.
After heat treatment,we will do the mechanical property test.
Our ordinary test block's size is 230mm*70mm*50mm.
One casting part will min. have 3 pcs test blocks.
We have our testing center and it is approved by CNAS.
6)Draw the line and do the first rough machining
We can do the machining from rough to finished machining.
7)NDT after rough machining
8)Welding repair
We have rich experience for making support rollers and kiln tyres,
then there is no welding for the outside working position.
This is our special technology.
Every year we supply around 400pcs kiln tyres,930pcs support roller,170 sets gear( in two halves).
But for some other castings,if we do the welding repair,
we will do the tempering for stress relief later.
All of our welders have the SGS certficate.
9)Shot blasting and grinding
We have a robert grinder.
We have a 120 tons rotary shot blasting table.
10)Final machining
We have a lot of vertical lathes from 2.5m to 10m.
We get approval from CNAS for our laboratory.
We also have 9 class certificate,such as ABS,DNV,NK,RINA,KR,CCS,BV and so on.
We supply a lot of castings for cement mill,rolling mill,shipbuilding and so on.
We can do the packing according to our rules or according to customers' requirement.
Normally there is a 12 months quality warantty.
We do at least three times NDT:after rough,semi-finished and finished machining.
And also the customer will do the witness during or after finished machining.
If there is also any problem when you receive the castings,
please send us photos and detailed defects,
we will negotiate with you and make a compensation.
A third party inspection before shipment is welcomed.
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