Sampling

Visual Inspection of Appearance Quality

① For small cans (below 15173), sampling is done according to Table 2 of GB/T 14251; ② For large cans (above 15173), sampling is done according to Table 3 of GB/T 14251.
Example: For production volume of 35,000 to 150,000 cans, 200 small cans and 80 large cans are sampled for visual appearance inspection.

Sealing, Seaming Structure, and Inner Container Wall Quality Inspection

① For small cans (below 15173), sampling is done according to Table 4 of GB/T 14251; ② For large cans (above 15173), sampling is done according to Table 5 of GB/T 14251.
Example: For production volume ≥ 35,000 cans, sampling is 13 small cans and 8 large cans. Inspection rules are shown in Table 5-13.

Table 5-13 Inspection Rules for Food Canned Containers

5.2.2 Inspection Tools

(1) Sanitary Can Opener — see Figure 5-7.

Figure 5-7 Sanitary Can Opener

Figure 5-8 Specialized Caliper for Canning Industry

(2) Specialized Caliper for Canning Industry — see Figure 5-8
(3) Seam Micrometer — see Figure 5-9
(4) Vernier Caliper and Depth Gauge
(5) Micrometer — see Figure 5-10

Figure 5-9 Edge Curl Micrometer

(6) Edge curl cutting machine or special edge curl saw.
(7) Edge curl projector.
(8) Inside diameter caliper, see Figure 5-11.
(9) Flat-nose pliers.
(10) Spherical tester.

Figure 5-10 Micrometer card Figure 5-11 Inner diameter measuring pliers2