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● The din766 chains which was calibrated and tested grade 3 round steel link chains as specified are used in all branches of industry.

● Finish: the standard surface finish shall be bright (bk). Other type of finish shall be subject to agreement.

● Safety requirements: the din766 chain shall be heat treated and shall meet the requirements specified in DIN685. The dimensions f the chain shall be within the tolerance given in below table.

● Diameter ds(diameter of welded) of the area affected by welding shall not be less than the size (d) and shall not exceed the latter by more than 7.5% . The weld points shall be positioned in the centre of the legs of the chain link, and shall not exceed a length a corresponding to the size.

● Acceptance inspection: if agreed upon, acceptance inspection may include the dimensional check, tensile test and bending test as specified in DIN 685.

● Identification marking: In addition, the din766 chains of each unit supplied shall be provided with a white triangular tag with Test stamp of chain manufacturer as specified in DIN 685 and Size of chain in mm.

● Test certificate confirming to DIN 685 shall be supplied as always.

Chain Size/mm	Pitch/ mm	Working Load Limit/ kg	Breaking Force/ kn	Proof Force/ kn
4	16	200	8	5
6	18.5	400	16	10
8	24	800	32	20
10	28	1250	50	32
13	36	2000	80	50
16	45	3200	125	80