Ductile Iron Manhole Cover A15Manhole Cover A15

Ductile Iron Manhole Cover A15Manhole Cover A15 System 1

Ductile Iron Manhole Cover A15Manhole Cover A15

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Loading Port:: China Main Port

Payment Terms:: TT or L/C

Min Order Qty:: 20 Tons m.t.

Supply Capability:: 600 Tons m.t./month

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Ductile Iron Manhole Cover with Customized Sizes

Ductile iron Manhole cover ---Class A15

Class A 15 (group 1 according to EN124)

The access covers and grates of this class are capable of withstanding a 15kN (~1.5 tonnes)test load.

Usage of Ductile Iron Manhole Cover :

Pedestrians, Pedal Cyclists

Features of Ductile Iron Manhole Cover A15:

1. High load rating and strength

v Similar hard property as cast iron, while have a overwhelming advantage on stretch recovery.

v Less noise and lower vibration transmissions.

2. Against theft and safety options

v Zero theft value, reducing potential accident and further maintenance cost caused by thieves.

v Surface anti-slip thread guarantees safe road condition even in extreme weather.

v Locks are available as an option molded into the cover to improve security rate.

v Non-electricity conduction and non-heat conduction.

3. Lightweight

v Compared with cast iron manhole covers, composited covers are 50% lighter.

v Lightweight allows more loading per vehicle, more convenient transportation and economical saving.

v Allows a safer working condition, which a SINGLE worker is enough when installation without risk of injury.

4. Durable service life.

v More than 30 years service life without crack and color fading, comparing to 5 years of cast iron.

v Anti corrosion,water, dust and pets tight, well sealed prevent poisonous gas leaking out.

v Without displacement, freely radio signal passing.

v Higher and lower temperature tolerance with the range -40°C-200°C.

v Wear indicators available when thread depth is in a danger value.

5. Free design

v Much more clear resolution ratio of surface design than cast iron or BMC.

6. Carbon footprint saving and environmental care.

v Lower embedded energy carbon emission and during manufacturing process than cast iron covers.

Packaging of Ductile Iron Manhole Cover A15 :

Metal band, plastic, wooden pallet

Technical Data of Ductile Iron Manhole Cover

Loading pressure	Clear opening mm	Frame size mm	Frame size mm	Weight kg
A15	150*150	200*200	200*200	2.8
A15	200*200	250*250	250*250	4.5
A15	250*250	300*300	300*300	6.3
A15	300*300	350*350	350*350	9
A15	350*350	400*400	400*400	12
A15	400*400	450*450	450*450	15
A15	450*450	530*530	530*530	22
A15	450*600	530*680	530*680	28
A15	600*600	680*680	680*680	32
A15	180*180	303*303	303*303	4.4
A15	228*228	353*353	353*353	7
A15	278*278	398*398	398*398	8
A15	382*382	505*505	505*505	12
A15	482*482	606*606	606*606	18
A15	576*576	706*706	706*706	30
A15	676*676	808*808	808*808	38

Delivery Detail of Ductile Iron Manhole Cover A15:

15 days after receiving the deposit.

Manhole Cover

Q:What are the causes of pitting on the surface of a precision casting?: There is a bump on the mold. Or casting cooling fast.

Q:How to cast iron and wrought iron collocation: 2, listen: Pig beating sound boring, wrought iron beating sound loud.

Q:What are the effects of stiffeners on castings, or on welded parts (for 2 tons or less), casting or weldments on stiffeners?: 4, the performance requirements of the steel: whether castings or welding parts, there may be quality defects, but the casting will generally be worse than the weldment.You should be able to make a choice in the end.

Q:How do casting parts remove stress?: Annealing treatment, according to different casting annealing treatment, eliminate thermal stress, if need to restore hardness or increase hardness, and then quenching treatment

Q:How can the casting be quenched and tempered?: Cast steel annealing or normalizing parts in strength and toughness is insufficient, can be used in quenching and tempering treatment. It is mainly used for gear, gear and other parts of the cast steel. The conditioning has two kinds: one kind is cast directly after quenching and tempering, with warm water (40---50 degrees) intermittent cooling, suitable for ZG270---500, ZG310----570 and other castings.

Q:What's the effect of casting copper?: Riga. Copper is copper components, promote the graphitization of the copper element, make dense tissue, and to refine and improve the uniform distribution of graphite, which can reduce the chilling tendency of the cast iron, but also can promote the formation of pearlite, has a favorable effect on the section sensitivity. Copper has the tendency to strengthen cast iron, ferrite and pearlite, so it can increase the strength of cast iron. The tensile strength and bending strength of cast iron almost increase with the amount of copper in it, especially in low carbon cast iron.

Q:What should I pay attention to when designing a casting structure?: (2) in the prevention of metal mold casting misrun and cold partition should pay attention to the following problems: the structure of A casting thickness should be appropriate not too thin, especially when casting size when not too thin; the B should avoid a big level, because it makes the liquid metal in the casting. Rise slowly, and the air contact surface, easy oxidation, and because the metal type liquid metal heat quickly, quickly lose liquidity, easy to cause misrun and cold lap, slag and other defects; C casting shape should be streamlined to avoid sharp corners and has sharp change connection structure in order to facilitate the flow of liquid metal. 2 in the design of metal castings in a complex shape, if the production process is very difficult, should not affect the casting conditions, try to make the casting has simple shape, strong structure change, removed from metallic die for.

Q:How to solve casting defect casting?: Prevention methodReduce the gas in the metal liquid and oxidize the slag, improve the fluidity of the metal liquidIncrease pouring temperature and pouring speed, strengthen slag collection, slag block or bottom pouring bag, teapot ladle pouring, can not cut off when pouring, prevent the slag from blocking the nozzle, and cause the casting to breakIncrease the sprue and sprue height, increase the runner section area and the sprue number, and improve the filling speed and the metal hydrostatic headImprove the casting design and increase the thickness of the thin-wall part of the castingChange the pouring position and pouring system, the casting thin wall plane is located at the top and away from the gate, to prevent the filling of liquid metal splashing, eddy current, avoid metal stream in the casting thin sections or core support, cold iron, insert the confluence, when necessary, take horizontal vertical pouring cold or inclined castingIncrease the permeability of core and sand, strengthen the exhaust of mould, and the quantity of air outlet and riser should be enoughChange the size and location of the core, the inner cold iron, the core support, the internal cold iron, the insert should be no rust, no oil pollutionCheck the type, tight box, press the operation of iron is safe, to prevent running fire

Q:As shown, how do I achieve the tightness test of this product, and achieve industrial production? Seek expert advice.: Precise and tight sealing of the surface to which the test piece is to be tested, equipped with an airtight test instrument, and an electrical control system. You can complete automated testing equipment

Q:Which surface is coarser for cast iron or cast steel castings? Why?: The surface of the steel is more rough, because the coating sand cast steel cast iron particles compared with graphite coating degree, the other one is to get a better air permeability and collapsibility of sand, the compaction degree is smaller than iron. Roughness mainly depends on the surface roughness on the surface of the sand.

MAXCOVER,rich on the resources for castings and the convenient transportation, is specialized in manufacturing and exporting gray iron & ductile iron anti-stealing manhole covers with frames, grates, pipe fittings and etc. our enterprise covers an area of 15000 square meters .we re-passed the ISO9001:2008 International Quality System Authentication in Aug,2010,adopt the international standard and established the system of the quality assurance arising according to ISO9001 quality level.

1. Manufacturer Overview
Location	Tianjin, China
Year Established	2010
Annual Output Value	Above US$ 1.5 Million
Main Markets	Mid East, Africa, Europe
Company Certifications	ISO 9001:2008；

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Tianjin
Export Percentage	60%
No.of Employees in Trade Department	300 People
Language Spoken:	English; Chinese; Spain; Alabic
b)Factory Information
Factory Size:	Above 15,000 square meters
No. of Production Lines	3
Contract Manufacturing	OEM Service Offered; Design Service Offered
Product Price Range	Average