Details:
A. Item: Manhole cover
B. Drawing: As your requirement
C. Surface: Blackening, galvanize, plating, painting, etc.
D. Material: QT, iron, steel
E. Product: Manhole cover, pipe fitting, flange, machine parts, pump parts, etc.
F. Technology: Sand casting
G. Advantages: Delivery on time, according to the demand for materials
H. Packing: Wooden case or as your requirement.
I. Deliverywithin 20 days after receiving last confirm information.

2)Manufacturing process
1. Sample or Drawing by customer
2. Tooling proposal&Discussion
3.3D Tooling Design
4. Tooling production
5. Rough parts manufacturer
6. CNC Machining
7. Fitting&Finish
8. Tooling Measurement&Check
9. Assembly
10. Trial Production
11. Correction
12. Final Trial
13. Samples Inspection
14. Sample Approval by customer
15. Tooling Approval
16. Ductile iron sand casting

3)Company Profile:
We mainly undertake the casting parts, machined parts and other products. Our Import and Export Department have many years experiences of foreign trade, products are mainly exported to the United States, Denmark, Italy, Russia, Australia etc.

manhole access,large drain covers,lightweight manhole cover,man hole covers,heavy duty drain cover,manhole covers for sale,sealed drain covers,manhole frame,recessed manhole cover

4)Typical products:
Scaffold fittings, Template parts, Railway fittings, ring flange, electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.
5)quality Control



Details of the product:
1.Material & Standard:grey iron,ductile iron,malleable iron,carbon steel,alloy steel(high Manganese steel,high Chromium steel and others),Stainless steel,Aluminum alloy,Copper alloy;
2.Moulding processing:Green sand,Resin sand,Waterglass sand,Lost wax/Silicon sol or Die casting.
3.Melting facilities:Cupola furnace,medium frequency induction electric furnace or electric arc furnace.
4.Casting Inspection facilities:Direct-reading spectrum instrument,metallographic analysis,magnetic particle inspection,ultrasonic inspection,X-ray inspection,mechanical properties inspection.
5.Heat treatment facilities:Aging oven,Electric furnace,Normalizing,Quenching and Tempering equipments.
6.Surface treatment:Shot blast cleaning,polishing,Chrome plating,Zinc plating,powder coating and others.
7.Machining facilities:CNC centres,NC lathes,NC milling machines,NC boring machines,drilling machines and other common machines.
8.Inspection facilities:CNC 3-D inspecton facilities and others.
9.Industrial categories:Tractor,Heavy-duty truck industry,Car industry,Farm machinery,Construction engineering machine industry,Electricity power industry,Elevator industry,Valve industry,General machine industry and others.
10. Part Unit weight range:
     For grey iron casting: up to 15000kgs;
     For ductile iron casting:up to 4000kgs;
     For high manganese steel casting:up to 5000kgs;
     For carbon steel & alloy steel casting:up to 10000kgs;
     For Aluminum/copper alloy die casting:from 8g up to 12kgs;
     For Investment/lost wax casting:up to 80kgs;
11.Representative product:machine bed,machine table,bearing stand,housing,casing,cover,valve body,pump body,big ring gear,big pulley,big sheave,bolster,frame,rear frame,front frame,engine block,mill-ball,hammer,jaw plate,bucket tooth,front idler,excavator sprocket,link rod,Bucket link rod,barre liner,grate plate,top grate,open grate,front wall and rack etc.

Details:
A. Item: Manhole cover
B. Drawing: As your requirement
C. Surface: Blackening, galvanize, plating, painting, etc.
D. Material: QT, iron, steel
E. Product: Manhole cover, pipe fitting, flange, machine parts, pump parts, etc.
F. Technology: Sand casting
G. Advantages: Delivery on time, according to the demand for materials
H. Packing: Wooden case or as your requirement.
I. Deliverywithin 20 days after receiving last confirm information.

2)Manufacturing process
1. Sample or Drawing by customer
2. Tooling proposal&Discussion
3.3D Tooling Design
4. Tooling production
5. Rough parts manufacturer
6. CNC Machining
7. Fitting&Finish
8. Tooling Measurement&Check
9. Assembly
10. Trial Production
11. Correction
12. Final Trial
13. Samples Inspection
14. Sample Approval by customer
15. Tooling Approval
16. Ductile iron sand casting

3)Company Profile:
We mainly undertake the casting parts, machined parts and other products. Our Import and Export Department have many years experiences of foreign trade, products are mainly exported to the United States, Denmark, Italy, Russia, Australia etc.

manhole access,large drain covers,lightweight manhole cover,man hole covers,heavy duty drain cover,manhole covers for sale,sealed drain covers,manhole frame,recessed manhole cover

4)Typical products:
Scaffold fittings, Template parts, Railway fittings, ring flange, electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.
5)quality Control



Details of the product:
1.Material & Standard:grey iron,ductile iron,malleable iron,carbon steel,alloy steel(high Manganese steel,high Chromium steel and others),Stainless steel,Aluminum alloy,Copper alloy;
2.Moulding processing:Green sand,Resin sand,Waterglass sand,Lost wax/Silicon sol or Die casting.
3.Melting facilities:Cupola furnace,medium frequency induction electric furnace or electric arc furnace.
4.Casting Inspection facilities:Direct-reading spectrum instrument,metallographic analysis,magnetic particle inspection,ultrasonic inspection,X-ray inspection,mechanical properties inspection.
5.Heat treatment facilities:Aging oven,Electric furnace,Normalizing,Quenching and Tempering equipments.
6.Surface treatment:Shot blast cleaning,polishing,Chrome plating,Zinc plating,powder coating and others.
7.Machining facilities:CNC centres,NC lathes,NC milling machines,NC boring machines,drilling machines and other common machines.
8.Inspection facilities:CNC 3-D inspecton facilities and others.
9.Industrial categories:Tractor,Heavy-duty truck industry,Car industry,Farm machinery,Construction engineering machine industry,Electricity power industry,Elevator industry,Valve industry,General machine industry and others.
10. Part Unit weight range:
     For grey iron casting: up to 15000kgs;
     For ductile iron casting:up to 4000kgs;
     For high manganese steel casting:up to 5000kgs;
     For carbon steel & alloy steel casting:up to 10000kgs;
     For Aluminum/copper alloy die casting:from 8g up to 12kgs;
     For Investment/lost wax casting:up to 80kgs;
11.Representative product:machine bed,machine table,bearing stand,housing,casing,cover,valve body,pump body,big ring gear,big pulley,big sheave,bolster,frame,rear frame,front frame,engine block,mill-ball,hammer,jaw plate,bucket tooth,front idler,excavator sprocket,link rod,Bucket link rod,barre liner,grate plate,top grate,open grate,front wall and rack etc.

Knob Switch

Rotary Knob switch can be used to replace traditional resistance potentiometer simulation function of rotating pulse generator, the rotary switch are normally used in the instrument front panel and audio control panel man-machine interface, rotary switch orthogonal optical encoder as pure digital device to replace analog potentiometer, the rotary switch on the appearance similar to traditional or resistive potentiometer, but the internal structure of rotary switch completely and use digital optical technology. Similar to traditional incremental encoder products have two orthogonal output signal channel A and B), can be directly connected with the encoder processing chip.
Rotary switch knob is to control the main contact a switch on and off. The structure of rotary switch has two kinds, which is one unit structure and more than a multipolar structure. Single unit rotary switch in the application of commonly used jointly with rotor potentiometer, while more than a multipolar rotary switch used for switch working state lines.

Knob Switch,Zinc Die Casting Knob Switch,Chrome Plated Knob Switch,Knob Slide Switch

NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY , https://www.aldiecastings.com