YIYI Mesh Belt Quality Control and 100% Final Inspection

Page 1. QUALITY CONTROL SAMPLE, BATCH AND 100% FINAL INSPECTION Real drawings and measured values from our orders PROVEN · STABLE · VERIFIED

Page 2. QUALITY IN 9 PHOTOS What we check, from wire to packed belt 1 Material Spectral and hardness test on every incoming batch. 2 Wire and rod Diameters measured against the drawing. 3 Drawing You approve it before anything is made. 4 First article Measured and sent to you. 5 New with old Joined to your old belt when needed. 6 Welding Robot welding; every weld checked. 7 Drum test Spiral, self-stacking and side driven belts. 8 Final inspection 100% of the belt before packing. 9 Shipment Only after you confirm.

Page 3. WHAT BUYERS ASK Five quality questions — and where we answer them Each answer is a measured value, a photo or a step you approve. Your question What we show you Pages Who decides when mass production starts? You do — after photos, video, the drawing or a sample. 4 Is the material what you quoted? Material tests on every incoming batch. 5–6 Will the batch match the drawing and sample? Drawing values against measured values from real orders. 7–12 What is checked before shipment? Drum test, welds, edges and 100% final inspection. 13–16 What records will I get? Photos, videos and inspection values for your order. 17–18 How you can check: ask for the same records for your own order.

Page 4. YOUR APPROVAL Nothing is mass-produced or shipped without your approval Your concern: the factory goes ahead before you have seen the result. # Step How you see it Your decision 1 Drawing Our drawing of your belt, in mm and in. You approve the drawing 2 Trial production Way A: photos and video of the trial piece, compared with the drawing. Way B: we also send the physical sample to you. You approve by e-mail or message 3 Mass production Starts only after your approval — never before. — 4 Final inspection Photos and video of the finished belt and its measured values. You confirm before shipment 5 Shipment Packing photos; the belt ships after your confirmation. — How you can check: photos, video and drawing comparison, or a physical sample as well — either way, mass production starts only after your reply.

Page 5. MATERIAL Every incoming batch is tested Your concern: is the stainless steel really what the quotation says? Each batch Steel mill documents, material verification, spectral analysis and hardness testing. Tensile testing is also used. Spectral analysis Tensile tester Hardness tester How you can check: ask for the mill documents of the material in your order.

Page 6. MATERIAL Wire and rod diameters, measured Your concern: a wire or rod that is thinner than the drawing. What we do Wire and rods drawn in-house; diameters measured against the approved drawing before forming. Wire drawing Wire diameter Rod diameter How you can check: ask for diameter photos of the wire and rods in your belt.

Page 7. REAL ORDER · SIDE DRIVEN Thailand: drawing values against the approved sample Replacement side driven belt. Values from our inspection record of the sample the buyer approved. Item Drawing Measured Tool Rod pitch 31.75 mm ±0.02 31.75 mm Caliper Rod diameter 6 mm ±0.02 5.99 mm Caliper Link thickness 2.5 mm ±0.02 2.51 mm Caliper Link height 16 mm ±0.02 15.98 mm Caliper Side guard width 40 mm ±1 40.43 mm Caliper Side guard height 55 mm ±1 54.82 mm Caliper Useful width 830 mm 830 mm Tape Overall width 942 mm +3/−4 942 mm Tape Weld points Good Pass Visual The approved drawing (revision 02) How you can check: after the first sample inspection the buyer asked for a wider useful width; drawing revision 02 was approved before mass production.

Page 8. REAL ORDER · BALANCED WEAVE Spain: carbon steel belt, drawing against first article Bread line belt, 1,650 mm wide. A 300 mm sample was approved first; the first production piece was then measured. Item Drawing First article Tool Rod pitch 9 mm 9.01 mm Caliper Spiral pitch 2.5 mm 2.50 mm Caliper Spiral wire 1.0 mm 1.00 mm Caliper Width 1,650 mm 1,650 mm Tape Rod pitch 9.01 mm Spiral pitch 2.50 mm How you can check: the repeat order was made to the same drawing and measured again.

Page 9. REAL ORDER · FROM A SAMPLE Spain: rusted sample → our drawing → first article No drawing, only the buyer's old belt. We measured it, drew it, then measured the first article and joined it to the old sample. Item Our drawing First article Tool Flat wire thickness 1.6 mm 1.61 mm Caliper Spiral pitch 8 mm 8.00 mm Caliper Width 3,400 mm 3,400 mm Tape Joining to old sample Must connect Joined, on video Splicing test Spiral pitch 8.00 mm New belt joined to the old sample How you can check: the splicing video was sent to the buyer before mass production.

Page 10. REAL ORDER · BELT AND SPROCKETS Australia: belt and sprockets, drawing against measured A wide carbon steel belt, and nylon sprockets made to drawing for another order. Item Drawing Measured Tool Belt rod pitch 6.35 mm 6.35 mm Caliper Belt width 1,994 mm 1,994 mm Tape Sprocket bore 30 mm 30.02 mm Caliper Sprocket outside diameter 86.4 mm (approx.) 86.93 mm Caliper Sprocket thickness 25.6 mm 25.63 mm Caliper Belt on sprocket Must engage Checked by hand Visual Belt rod pitch 6.35 mm Sprocket bore 30.02 mm How you can check: ask for the measured values of your belt and sprockets.

Page 11. REAL ORDERS · SELF-STACKING Self-stacking belts: sample, first article and batch Six orders. The same values are measured on the buyer's sample, on the first article and again on the batch or reorder. Order Item Drawing Buyer's sample First article Batch / reorder Spain, 760 mm Rod pitch 30 mm 29.92 mm — 30.00 mm Malaysia, 1,069 mm Tier plate height 80 mm 80.12 mm 80.01 mm — Australia, 760 mm Tier plate height 120 mm — 120.01 mm 120.03 mm Korea, 420 mm Spiral pitch 9 mm — 9.00 mm — Pakistan, 660 mm Spiral pitch 13 mm — 13.01 mm — New Zealand Spiral pitch 9 mm — 9.00 mm 9.00 mm (reorder) How you can check: the buyer's worn sample is not the design value — we confirm the drawing value with you first.

Page 12. REAL ORDERS · SELF-STACKING The values above, as measured Photos from the same orders: the buyer's sample, the first article and the batch. What you see Tier plate height on the Malaysian sample, the 120 mm plate on the Australian batch, and the spiral pitch on the Pakistani first article. Malaysia: sample plate 80.12 mm Australia: batch plate 120.03 mm Pakistan: spiral pitch 13.01 mm How you can check: the same photos are sent to you for your own order.

Page 13. BEFORE SHIPMENT Drum test at the turning diameter Your concern: a belt that will not turn on your drum. Every order Spiral freezer, self-stacking and side driven belts are laid out at the turning diameter and measured before shipment. Spiral belt Self-stacking belt Side driven belt How you can check: ask for the drum-test photos and the measured diameter.

Page 14. BEFORE SHIPMENT Welds and edges, checked one by one Your concern: sharp or loose welds on site. What we check Each weld pressed by hand; weld points smooth and rounded; edges free of burrs; arc residue removed. Robot welding Edge check Edges and welds How you can check: ask for close-up photos of the welds and edges on your belt.

Page 15. BEFORE SHIPMENT 100% final inspection before packing Your concern: problems that only show up at installation. Every belt Pitch, width, length, flatness, welds, edges, cleanliness, appearance and packing condition — on the full belt, not a sample. Width Link pitch Pitch along the belt How you can check: final-inspection photos and video are sent for your confirmation before shipment.

Page 16. WHAT WE STOP 9 problems we stop before your belt ships 1 Weld residue Removed with a weld-cleaning machine. 2 Uneven polish Polished again before packing. 3 Side plates Parallel, small even gap. 4 Bent rods Every rod straight. 5 Loose welds Each weld pressed by hand. 6 Width Measured at five points or more. 7 Sprocket fit Pitch matched to the belt. 8 Burrs Removed from every tooth edge. 9 Oil film Thin and even on carbon steel.

Page 17. YOUR RECORDS What you receive for your order Your concern: "inspected" with nothing to show for it. Stage What you can receive Drawing The approved drawing and any revision Material Steel mill documents Trial / first article Photos and video with measured values, or the physical sample Before shipment Final-inspection and drum-test photos and video Packing Inner and outer packing photos, packing list How you can check: tell us at the enquiry which records you need; we agree them before production.

Page 18. HONEST LIMITS What 100% final inspection does — and does not — mean Your concern: a supplier who promises perfection. It does not mean What it does mean Zero defects Every belt is checked, and you see the photos before shipment. One life for every belt Life depends on your operating conditions. A fit from a photo alone Fit is confirmed on the drawing you approve. No problems ever If something goes wrong, we reply as soon as we see your message, within 8 working hours (our usual practice, not a contractual deadline) and review the records. How you can check: ask any supplier how they check — and what they will show you.

Page 19. PROVEN · STABLE · VERIFIED Metal Conveyor Belt Manufacturer Email: info@yiyimeshbelt.com Phone / WhatsApp: +86 134 5177 3742 Website: www.yiyimeshbelt.com www.yiyimeshbelts.com Company: Ningjin Yiyi Mesh Belt Co., Ltd. Send your drawing or old-belt sample Belt type and application Width and length (mm / in) Material and operating conditions Records you need for your order Drawing, old belt or photos Request a Drawing Review for OEMs & Professional Distributors Document YIYI-PPT-N03 · Revision 2026-10-30 · Ask us for the latest revision