Precision Investment Casting Excavator Counterweight
Product Details
Mainly Material | stainless steel, carbon steel, steel, aluminium, brass, bronze, copper |
Process | investment casting, lost wax casting, silica sol casting, Precision casting. |
Casting tolerance | CT4-CT6 (GB/T 6414) |
Standard | AISI, ANSI, ASTM, JIS, GB, ISO, DIN |
Certificate | TS16949,SGS, ISO, or as your requirement to do test by the third party |
Machining | tapping, milling, grinding, drilling, cnc machining |
Tolerance | +/-0.02mm or as drawing requirement |
Surface treatment | polishing,mirror polishing, electrogalvanizing, sandblasting, shot blasting |
Heat treatment | quchenging and tempering, annealing, normalizing |
Casting Roughness | Ra 1.6-Ra12.5 |
Production Process

About Us
Sunrise Foundry is a professional Metal Foundry, located in Ningbo. We have been producing Gray Iron,
Ductile Iron Castings and and any other precision castings for more than 25 years.
We are dedicated to meet different requirements of various customers across the world, products are mainly
involved Agricultural and Construction Machinery, Hydraulic, Mining industry, Municipal Products, some steel
and stainless steel castings for Pumps and Valves, Pipe Fittings, etc.
Please feel free to contact us if you have any requests.
Quality Control

FAQ
Q1.What's the payment terms?
T/T 50% Deposit, 70% balance before shipment.
L/C at sight(Based on your opening bank reputation)
Q2.What’s the delivery time?
We usually delivery the goods within 15-30 days after receiving customer’s order and your payment.
Q3. What's the certificate we can provide for products?
ISO9001, SGS etc.