Umbrella Base Parts

Model NO.: OEM

Surface Treatment: Sand Blast

Surface Roughness: Ra25

Standard: ASTM

Certification: ISO 9001:2008, Ts16949

Trademark: OEM

Transport Package: Bubble Bag, Carton, Pallets or Wooden Box

Specification: OEM

Origin: China

HS Code: 73269090

Model NO.: OEM

Surface Treatment: Sand Blast

Surface Roughness: Ra25

Standard: ASTM

Certification: ISO 9001:2008, Ts16949

Trademark: OEM

Transport Package: Bubble Bag, Carton, Pallets or Wooden Box

Specification: OEM

Origin: China

HS Code: 73269090

Brief introduciton of sand casting:

Sand casting is perhaps the oldest and most commonly used type of metal forming in the marketplace today. It is capable of forming both large and small parts and can be used for a number of different materials.

We have green sand castings, resin sand casings and water glass sand castings in both ferrous and non-ferrous materials.
Perhaps the most common green sand castings would be made from either grey iron or ductile iron. We can supply these castings from approximately 0.05Kg to approximately 15000 Kg and up to 5000mm x 2000mm x 1500mm in size for the largest part. Molding methods range from floor hand molding, jolt squeezer lines and automatic molding lines. With this variety of molding methods we are able to accommodate the weight, size and quantity the customer requires.

Steel sand castings are available both as water glass sand castings and resin sand castings, and are available in plain carbon, alloy and stainless steels. In the category of steel sand castings the smallest available part would be approximately 1Kg while the largest would be approximately 20 tons. Steel castings smaller than the 1Kg range would be made from investment casting(lost wax casting) method.

Non-ferrous sand castings are also available. The molding process used is green sand and we can accommodate requests for castings weighing from 0.1 Kg to 100 Kg. The alloys that are available include copper base and aluminum base alloys.
First article layouts and spectrometer material certifications are provided with all first article samples. Specialized inspection reports can be done per customer request.

A variety of secondary operations can be performed on all three types of sand castings. They include shot blasting, heat treatment, machining,surface treatment, assembly services and even custom packaging.
 

Materials and casting weights for different sand casting methods
Sand casting method	Green sand casting	Resin sand casing	Water glass sand casting
Materials used in different method	Grey iron,Ductile iron, Aluminum and copper alloy	Grey iron,Ductile iron, Carbon steel,Alloy steel, Stainless steel	Carbon steel,Alloy steel, Stainless steel
Weight range	0.05-15000Kg	0.5-18000Kg	5-20000Kg

Chemical composition of some materials:



Some sand casting process:



Machining and inspection equipments:



Some products:




Packing and customers:



Our advantages:

1. 20 years of manufacturing success in China and exporting experience worldwide                                                                   
2.Global specialized producer of machined castings.
3. We combine our own resources with some other well-developed factories to fulfill a wide range of contract manufacturing capabilities. Working with one source, saves time and money.
4. Satisfied supplier of 7 big companies from North America and Europe.                                                                 
5. Low cost mold materials and focus on efficiency offer a cost-effective solution to your metal component purchasing requirements.                                                                    
6. Normal lead times range from 1 to 6 weeks for fully-machined components.                                                                   
7. Strong capacity to help customers develop new projects.                                                                   
8. Our sales department is 24 hours available in order to help our customers solve problems quickly.
Contact Donrex today and begin enjoying the benefits of high quality and low price products. 
  Brief introduciton of sand casting:

Sand casting is perhaps the oldest and most commonly used type of metal forming in the marketplace today. It is capable of forming both large and small parts and can be used for a number of different materials.

We have green sand castings, resin sand casings and water glass sand castings in both ferrous and non-ferrous materials.
Perhaps the most common green sand castings would be made from either grey iron or ductile iron. We can supply these castings from approximately 0.05Kg to approximately 15000 Kg and up to 5000mm x 2000mm x 1500mm in size for the largest part. Molding methods range from floor hand molding, jolt squeezer lines and automatic molding lines. With this variety of molding methods we are able to accommodate the weight, size and quantity the customer requires.

Steel sand castings are available both as water glass sand castings and resin sand castings, and are available in plain carbon, alloy and stainless steels. In the category of steel sand castings the smallest available part would be approximately 1Kg while the largest would be approximately 20 tons. Steel castings smaller than the 1Kg range would be made from investment casting(lost wax casting) method.

Non-ferrous sand castings are also available. The molding process used is green sand and we can accommodate requests for castings weighing from 0.1 Kg to 100 Kg. The alloys that are available include copper base and aluminum base alloys.
First article layouts and spectrometer material certifications are provided with all first article samples. Specialized inspection reports can be done per customer request.

A variety of secondary operations can be performed on all three types of sand castings. They include shot blasting, heat treatment, machining,surface treatment, assembly services and even custom packaging.
 

Materials and casting weights for different sand casting methods
Sand casting method	Green sand casting	Resin sand casing	Water glass sand casting
Materials used in different method	Grey iron,Ductile iron, Aluminum and copper alloy	Grey iron,Ductile iron, Carbon steel,Alloy steel, Stainless steel	Carbon steel,Alloy steel, Stainless steel
Weight range	0.05-15000Kg	0.5-18000Kg	5-20000Kg

Chemical composition of some materials:



Some sand casting process:



Machining and inspection equipments:



Some products:




Packing and customers:



Our advantages:

1. 20 years of manufacturing success in China and exporting experience worldwide                                                                   
2.Global specialized producer of machined castings.
3. We combine our own resources with some other well-developed factories to fulfill a wide range of contract manufacturing capabilities. Working with one source, saves time and money.
4. Satisfied supplier of 7 big companies from North America and Europe.                                                                 
5. Low cost mold materials and focus on efficiency offer a cost-effective solution to your metal component purchasing requirements.                                                                    
6. Normal lead times range from 1 to 6 weeks for fully-machined components.                                                                   
7. Strong capacity to help customers develop new projects.                                                                   
8. Our sales department is 24 hours available in order to help our customers solve problems quickly.
Contact Donrex today and begin enjoying the benefits of high quality and low price products. 
 

Forged Metal Core

We can manufacture a wide variety of metal cores for rubber track,and metal cores are essential spare parts in rubber track production.Now our metal core have been sold to many countries such as Thailand,Japan,USA and have been warmly welcomed by them,below is our products information:

1,Main Material: carbons steel 45# and alloy steel 40Cr or some other materials which customer requested.

2,Heat Treatment:HRC42-46 or some other hardness which customer requested.

3,Surface treatment:Shot Blasting.

4,Producttion Equipment:300Ton,400Ton,630Ton,1000Ton,1600Ton,2500Ton Press.

5,Product Weight:0.1kg-20kg

6,Models: From LG100*72 to LG 800*150


FAQ:

1. Are you a genuine manufacturer?Yes, all products showed in our website are produced in our ISO9001:2015 certified factory; We are also a company registered by China Customs with the right to export and import.

2. I want to keep our design in confidence; can we sign NDA?Sure, to protect customers' profit is our obligatory responsibility, signed NDA would be valid to both of us..

3. What should I offer to get your quotation?Please offer us your detailed information for the product, such as drawings with 2D/3D by software Pro/E, Auto CAD, SolidWorks, UG etc; as well as materials, surface treatment, quantity, package. Any special requirements should be highlighted especially for tolerance.

4.How long does it take to receive samples?
20 working days,the lead time is the general production period and does not include the transportation time.
we can supply free samples with less quantity,but customers need to pay shipping cost.

5.How long is the manufacturing lead time?
Mass Production:30-45 working days after sample approval by yours.The lead time is the general production period without the transportation time.
We could make some special production arrangement effectively if customer has urgent need.

6.How long does it take to ship goods from China by sea?
It takes about 5 weeks to European ports plus 1 week customs clearance, so you can get the container within 6 to 7 weeks.It takes about 2 weeks to east coast and 3 weeks to west coast US ports.All sea goods are shipped from Ningbo Port.

7.How long does it take to ship goods from China by air?
It takes about 7 days to all major destinations.

8.What are the payment terms?
Payment terms are negotiable and will improve for long term customers.During the initial stages, we request 50% of tooling fee in advance with the balance payable on acceptance of samples.Production orders can be negotiable.We prefer 30% deposit and the balance by T/T before sails.But sometimes T/T15 days after sails would also acceptable.

9.New product development process
Got tooling order and sample order with 50% deposit---Hold a meeting with the relation dept.To ensure the developing schedule---Design mould, fixture and gauge and making them in our factory---mould.fixture and gauge making---producing samples---approved from customer-purchasing material-forging-heat treatment-shot blasting-machining-Inspection-package---delievry


10.Which countries do you export to?
Now mainly export to U.S.A, Germany, France, Italy, UK, Brazil, Swedish, Japan, Korea, Middle east of Asia, Thailand and so on.

11.Can we visit the factory to conduct an audit?
Yes, you are welcome to visit our factory.

12.How to handle the complains?
--If happen any complaints after delivery,please just show us photos and detail compliants points, we will check with the production department and QC department Immediately and give you best solving solution which agreed by both of us,moreover we will bear all the cost (including shipping cost).

Forged Metal Core,Forging Iron Core,Forged Excavator Parts,Metal Core Of Rubber Track

Wenzhou Lianggong Forging Co.,Ltd. , https://www.lianggongforging.com