What is the definition of grade? How to express?

Grade metal products, is the product of the weight ratio of metal relative to the weight of the product.

The grade is determined by chemical analysis (or other method) and is expressed as a percentage. Example: Copper concentrate grade of 20%, that is, in the metallic copper-containing twenty tons of one hundred tons of dry concentrate.

The grade of the product is usually indicated by the Greek letter.

α - indicates the original ore grade (read alpha).

β - indicates the concentrate grade (reading beta).

δ - indicates the tailings grade (read Xi Xi).

The aforementioned grade definition is the representation of most metal minerals. However, some metals (such as some of the tungsten, aluminum, uranium and other non-metallic minerals such as apatite and the like) taste, which is more compounds represented by grade.

Mine High Strength Chain

Mine high strength chain

Our fatory G80/G40 Log boom chain . Our main products include lifting chain,lashing chain, anchor chain,mine chain,ship chain,bucket elevator chain,stainless chain,etc.

Application fields: Mine, transportation
Material containing Cr material: 9:28, Ni, Mo of high quality alloy ,Q195/Q235
An intensity level: grade B, C, D level level
Painted surface treatment: Leaching paint, Black, Galvanized ,

QUALITY:
According to GB/T12718-2009 and Polish standard PN-G-46701:1997,which fulfils the requirements of the following specifications:ISO-610-1990(E),DIN22252:2001-09.

High Strength Minning Round -Link Chains


Mining High Strength Round Link Chain, G80 Chain, Harvesters Three-ring Chain, Mine High Strength Chain, Short Link Chain

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