Material of tempered glass lid: Float glass Optional stainless
steel rim: SUS304 Diameter: customized Test for
quality control:1. FLATNESS CHECKPlace the glass lid on a
completely smooth table, and put a piece of 1mm thickness iron
plate beside the ring the glass lid, then moving the iron gauge
along with the circumference of the lid, the glass lid passes the
test if the iron plate does not push in 2. THTERMAL SHOCKPut the
glass lid into oven temperature to 200° C, and constant temperature
for 30 minutes, remove it immediately into 20° C water, glass no
broken or crack 3. IMPACT TESTPlace a lid, domed size up, on a hard
surface, Dropping a 225 grams steel ball from a height of 1.5meter,
No fracture no shatter, to pass Note: Don't drop the ball near or
onto a vent hole /rivet hole 4. SCRATCH TEST (PRESSURE TEST)Use
120-grit (abrasive paper ) sandpaper to scratch two side and three
directions 15 times, then put into room temperature water for 15
minutes, it pass if no breakage and no crack. 5. POLOLARISCOPE
CHECKTo test the balance of compressive stress and tensile stress
depends on the color what you see. 6. FRAGMENTATION CHECKApply tape
(adhesive film)on the convex (front) surface of the lid, domed side
upward, break it with a hammer broken 5X5cm measuring range, number
of particles (fragments) counted should be at least 40, The purpose
of this test is to determine whether the glass has been adequately
toughened. Ckage detail: Inner packing: Lined with paper, Outer
pakcing: 5 ply-corrugated cartons /* January 22, 2024 19:08:37
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