Which Grate material is best? Cast Iron,Stainless Steel,Porcelain,or Steel?

Collect from about.com,by Derrick Riches

The cooking surface of your grill is one of the most important parts. The material used should be strong and resilient. It should provide good heat transfer and not be sticky. It doesn't necessarily need to be a non-stick surface as in Teflon but food shouldn't stick any more than necessary. Most Gas Grills have either cast iron, porcelain coated cast iron, stainless steel, porcelain coated steel or just plan steel. Now the intense heat of the grill can wear down these metals. Actually the worst thing you can do to a cooking grate is heat it up and then throw cold food on it, but that's how you grill so it will have to live with it. It is however important to keep your grate clean and in the case of bare cast iron to keep it oiled.
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Plain Woven  Square Wire Cloth is woven in the way that shute wire passes alternately under and over successive warp wires and each warp wire passes alternately over and under successive shute wires.
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According to the recorded history of Anping County, Anping Wire Mesh (Screen) started from HongZhi Emperor Period of Ming Dynasty. At that time, the silk screen weavers in Tangbei village of Huangcheng Town had business friendships with Asian merchants.
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Steellong shows you some pictures in order to give you an general idea of manufacturing welded wire mesh.

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Our development policy is
"exporting our products through our own BRAND , OEM or ODM and doing everything possible to establish a joint-venture."

Our management principle is
"Quality First and Customer First"

Our business principle is
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Anping Wire Mesh World, located at the “Land of Wire Mesh” in China, is the only specialized wholesaling market of wire mesh products. Its construction was approved by the Planning Committee of the State. The layout of the market was planned and designed by the Architectural College of Tsinghua University. It covers an area of 600 mu and building area of 160,000 square meters with a total investment of 200 million RMB. Now over 980 domestic companies have entered and set up offices in the market.
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Steellong is specialized in producing and distributing wire mesh, hardware cloth,wire mesh fence,perforated metal etc. You are welcome to contact us for more information and cooperation.