Grade 80 Alloy Steel Chains With Zinc Plated/Black Oxide

Alloy steel chains: 1.Material: 25Mnv, 20Mn2, Q235 2.Finish: blackened, zinc-plated, HDG 3.Size: 4mm-32mm alloy steel chains

Introduction:

We are specialized in supplying high strength chain, alloy steel hoist chain, transport chain, proof coil link chain and chain sling to satisfy your different lifting requirements. We produce link chains by automatic bending, trimming and welding machines, and automatic test machine.  Our link chains have been exported to Korea, Canada, Colombia, Italy, South Africa, United State etc

1) Grade: G80, G70, G60, G43, G30 alloy steel chains

2) Surface treatment: Self color, black oxide, electro galvanized, hot dip galvanized, black painted etc.

3) Material: 20Mn2, 25Mnv, Q235 (alloy steel chains, mild steel chains, welded lashing chains, transport chains, lifting chains, load chains)

4) Standard: National Standard (GB/T20947-2007), International Standard (ISO3077-2001), American Standard (NACM, ASTM), European Standard (EN818), AS/NZS Standard

Working procedures of Grade 80 Alloy Steel Chains:

1. Receive the purchase order  2. Product requirement  3.Buy raw material  4. Inspect raw material  5. Store raw material

6. Wire rod drawing  7. bending  8. Trimming and Welding  9.Check surface 10. Sampling and breaking test  11.Calibration  12. Heat treatment 13. Proof load test  14. Black oxide or galvanized  15. Sampling and breaking test  16. Cutting  17. Final inspection   18. Packing  19. After-sale service

Technical parameter(GB/T20947-2007/EN818-2):

   

Size d x p mm	Width		Approx Weight Kg/m	Working Load Limit t	Test Load KN	Breaking Load min. KN
	Inside min. a	Outside max. b
6X8	7.5	21	0.79	1.1	27	45.2
7x21	9	24.5	1.07	1.5	37	61.6
8x24	10	28	1.38	2	48	80.4
10x30	12.5	35	2.2	3.2	76	125
11x43	12.6	36.5	2.33	3.8	92	154
12x36	15	42	3.1	4.6	109	181
12.5x38	15.5	42.2	3.3	4.9	117	196
13x39	16.3	46	3.8	5	128	214
14x42	18	49	4.13	6.3	150	250
14x50	17	48	4	6.3	150	250
15x46	20	52	5.17	7	168	280
16x48	20	56	5.63	8	192	320
16x49	24.5	59.5	5.71	8	192	320
16x64	23.9	58.9	5.11	8	192	320
18x54	23	63	6.85	10	246	410
18x64	21	60	6.6	10	246	410
19x57	23.7	63.2	7.7	11.3	270	450
20x60	25	70	8.6	12.5	300	500
22x65	28	74.2	10.7	15.3	366	610
22x66	28	77	10.2	15.3	366	610
22x86	26	74	9.5	15.3	366	610
24x72	32	82	12.78	18	432	720
24x86	28	79	11.6	18	432	720
26x78	35	91	14.87	21.3	510	850
26x92	30	86	13.7	21.3	510	850
30x90	38	105	19.6	28.3	678	1130
30x108	34	98	18	28.3	678	1130
32x96	40	106	22.29	32.2	772	1286

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