Gold Member Since 2016
Audited Supplier

Taian Precision Steelball Co., Ltd.

Steel Ball, Stainless Steel Ball manufacturer / supplier in China, offering Q235 Soft Carbon Steel Ball with Factory Low Price, 1085 Carbon Steel Ball for Bearing, High Quality Forged 6inch Steel Ball with Carbon Steel Material and so on.

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Supplier Homepage Company Show Factory Screening QUALITY

Factory Screening

QUALITY [Feb 09,2017]
QUALITY
We produce steel balls at the time of each production step have to undergo a rigorous testing
Technical Definitions:
GradeA specific combination of dimensional form and surface roughness tolerance.
Nomintal ball DiameterThe diameter value that is used for the purpose of general identification of a ball size. Measured by two parallel plane tangent to the surface of the ball.
Mean Diameter of a BallThe arithmetical mean of the largest and the smallest single diameter of the ball.
Lot Mean DiameterThe arithmetical mean of the mean diameter of the largest ball and that of the smallest balls in the lot.Lot is the definite quantity of ball manufactured under uniformed condition.
Lot Diameter VariationThe difference between the mean diameter of the largest ball and that of the smallest ball in the lot.
Diameter ToleranceThe maximum allowable deviation of any ball mean diameter from the nominal ball diameter.
SphericityThe greatest radial distance in any radial plane between a sphere circumscribed around the ball surface and any point on the ball surface.
Surface RounghnessSurface roughness consists of all those irregularities such as crack,cuts and dent,which surface relief.And it is conventionally defined within the area where deviation of form are eliminated.
HardnessThe measure of resistance to penetration of the ball surface or truncated flat of the ball by a specific indenting shape.

Grade and Tolerance:
GRADE VDSWVDLRA
G401.01.02.00.06
G601.51.53.00.08
G802.02.04.00.1
 G1002.52.55.00.1
 G2005.05.0100.15
 G50012.512.525×
   G1000252550×
   G20005050100×