Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality System 1

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality System 2

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality System 3

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality System 4

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 set

Supply Capability:: 4166 set/month

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Product Description

Grey cast iron (GG)

Type description EN-GJL-200/-300

Tensile strength 100 – 400 N/ mm²
Elongation < 1 %

Loading 400 – 800 N/ mm²

Density 7.8 kg/ dm³

Property very hard / brittle

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality

Specification

Item No.	Class	Clear Opening(mm)	Frame Size(mm)
SC42	C250	330*330	420*420
RGC-01L	C250	390*325	530*465

Advantages

Good compressive, flexible and impact strength, water-proof, not rust, serviceable life (at least 30 years).

The quality meets the same kinds cast ion manhole covers but the cost is 30% lower than other companies.

Packaging & Shipping

Packaging: Details Pallet with bubble film, Carton or with pallet,

Delivery Detail: 8 days if your order is 20"container

Casting Ductile Iron Manhole Covers C250 and D400 for Mining with Frames of good quality

FAQ

1.Can I request to change the form of packaging and transportation?

A:Yes,We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.

2.Can I have my own Logo on the product?

A: Yes, you can send us your drawing and we can make your logo, but you have to bear their own the cost.

Q: Casting blank in the cooling process to release a large amount of heat energy, what can be recycled?: General Casting Factory Casting Division will be in your chart marked on shrinkage and processing margin figure (usually with red and green pen) to the patternmaker production of wood or other material mould diagram.

Q: Why does the precision casting factory not usually make iron castings?: The so-called precision parts is the size, roughness requirements of the piece. Cast iron parts generally do not reach the accuracy.

Q: The casting sand is going on: 3, prevention measures(1) to improve the strength of sand mold (core), especially surface strength, high temperature strength, refractoriness, compact, better coating, good core coating and parting surface coating.(2) mould and box can prevent damage;(3) the core should have clearance.

Q: What should I pay attention to when designing a casting structure?: 1 of the casting in metal mold cooling was faster than sand, metal type and let, thus casting in metal mold casting, casting stress generated in the ratio of sand casting to crack tendency is also large, but also prone to misrun and cold lap, white (for casting casting). Defect. Usually: (1) in the prevention of metal casting casting crack aspect should pay attention to the following problems: the structure of A in wall thickness, wall transition and connection to the ease, corner fillet appropriate requirements such as should be more strict than sand casting; B should be connected vertically connected with the wall to tilt C; for the weak parts of the structure should be set to strengthen ribs, bosses, to prevent casting; D should minimize the obstacle free shrinkage of the boss, casting rib, flange and other prominent part; E in the casting arrangement of ribs, but also should consider its influence on the casting shrinkage.

Q: What is the casting material?: Gray iron, carbon steel, low alloy steel, ductile iron, stainless steel, Aluminum Alloy can all be cast out

Q: Why do casting parts have air holes?: First, from the source, tools, raw material drying, in the process of melting into the reaction gas, another influence is pouring process, such as high temperature solidification gas dissolved too much after not excluded. The method can adjust the pouring temperature properly, control the source of gas (drying and controlling the inoculant, especially the content of magnesium), and add cooling iron to change the solidification mode. It depends on what kind of casting you are. You can't make it clear at once. And molding sand relationship is mainly water content and permeability, brush coating resin content.

Q: When the blank is a casting, the margin is evenly distributed, how should rough machining?Please help friends from mechanical classes.There is another problem: in the NC milling plane contour machining, when the rough margin is large, how to deal with.Who can help in time, add 20 reward. Urgently!!: Even distribution is a good thing. Generally, the machining allowance of the casting is uneven.If the processing depends on how your processing techniques have been arranged.In the NC milling plane contour machining, when the rough margin is large, how to deal with.1. Return to the foundry, too large margin improvement.2. Then you can spend more time on it.

Q: In the design of casting steps and precautions, for casting design, we have what experience?.: Two: the basic structure unit in the design of metal casting type and the parameters selected, usually should also pay attention to: (1) because of the metal type heat quickly, so the metal type casting minimum wall thickness should be bigger than the sand casting, metal type casting alloy minimum wall, different size of castings see table 1.1-31 thick can be selected; (2) the inner wall of the casting internal ribs and the thickness of wall thickness should be 0.6-0.7 connected, or as the inner wall (rib) cold slowly, cracks in the wall at the junction in the casting shrinkage;

Q: What reason is the bronze statue choking fire?: The casting process in boiling phenomenon, is the setting of the exhaust hole positioner position or number is not reasonable, the air cavity can not be discharged, overwhelmed by a material inlet, reflux, change mould, sincerely help you look forward to adopt,

Q: Is 316 casting better than 304 casting?: The degree of difficulty in the process of casting depends mainly on the structure, precision requirements, and hardness of the casting.

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