CONG TY TNHH HOA Y

CÔNG TY TNHH HOA Ý

CONG TY HOA Y

HOA Y CO LTD

SILVERSON VIETNAM
MECMESIN VIETNAM

TRANG CHỦ Sản phẩm Koehler Thiết bị kiểm tra độ xuyên kim

Penetration tests are performed on petroleum products to determine consistency and shear stability (lubricating greases) for design, quality control and identification purposes. A standard cone or needle is released from a penetrometer and allowed to drop freely into the sample for 5 seconds (or a different specified interval) at constant temperature. The depth of penetration of the cone or needle into the sample is measured in tenths of a millimeter by the penetrometer.