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HENGYANG ZK INDUSTRIAL CO., LTD

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Quality Control

ISO9001:2015

CTF/CTQ Controlling Points Sheet for cold shrink products

CTF (Critical to Function)

NO	Item	Required	Controlling Points
1	Elongation	≥670%	Sampling test for each lot of material
2	Tensile strength	≥7.16Mpa	Sampling test for each lot of material
3	Tear Strength	≥35KN/m	Sampling test for each lot of material
4	Waterproof rating	IPX7	Sampling test for each lot of material

CTQ (Critical to Quality)

NO	Item	Required	Controlling Points
1	Expanded Inner diameter	L±3mm	Inspection per each lot during first tour and final inspection according to method of MIL-STD-105E, LEVEIL, AQL=0.65.
2	Expanded Outer diameter	OD±4mm	Inspection per each lot during first tour and final inspection according to method of MIL-STD-105E, LEVEIL, AQL=0.65.
3	Expanded tube length	L±10mm	100% Inspection by comparing with standard sample
4	Recovered tube length	L±5mm	100% Inspection by comparing with standard sample
5	Recovered wall thickness	T±0.6mm	Inspection per each lot during first tour and final Inspection
6	Elongation	≥670%	Sample 5 pcs for each lot
7	Tensile strength	≥7.16Mpa	Sample 5 pcs for each lot
8	Tear Strength	≥35KN/m	Sample 5 pcs for each lot
9	Waterproof rating	IPX7	Sample pcs for each lot

HENGYANG ZK INDUSTRIAL CO., LTD

Contact Person: MrRichard Lee

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