This form with the working load use the steel wire rope:6X37+FC-1670,8X61+FC-1670;
The 0-45 can be used if the customers do not have any special requirement.
Different construction of the rope means different working load,we can calculate the working load with the wire rope construction that the customer requried.
According to the GB/T16271-1996 Standard

Item.No	Dia of Rope(mm)	WLL(KN)		Master LinkAxBxd(mm)	Hook
		0-45	45-60		Model No.	WLL(t)
SLNCSFH06	6	5.6	4.0	65x130x16	US S6	0.75
SLNCSFH07	7	7.6	5.4	65x130x16	US S6	0.75
SLNCSFH08	8	9.9	7.1	65x130x16	US S6	0.75
SLNCSFH09	9	12.6	9	65x130x16	US S6	0.75
SLNCSFH10	10	15	11	65x130x16	US S6	0.75
SLNCSFH11	11	19	13	65x130x16	US S6	1
SLNCSFH12	12	22	16	80x150x20	US S6	1.5
SLNCSFH13	13	26	19	80x150x20	US S6	1.5
SLNCSFH14	14	30	22	80x150x20	US S6	1.5
SLNCSFH16	16	40	28	90x160x24	US S6	2
SLNCSFH18	18	50	36	90x160x24	US S6	3
SLNCSFH20	20	62	44	100x190x28	US S6	3
SLNCSFH22	22	75	54	100x190x28	US S6	5
SLNCSFH24	24	89	64	110x200x32	US S6	5
SLNCSFH26	26	105	75	110x200x32	US S6	5
SLNCSFH28	28	122	87	120x230x34	US S6	7.5
SLNCSFH32	32	159	113	135x250x38	US S6	10
SLNCSFH36	36	201	144	140x270x42	US S6	10
SLNCSFH40	40	248	177	160x310x46	Eye	15
SLNCSFH44	44	300	214	180x330x52	Eye	15
SLNCSFH48	48	356	254	180x330x56	Eye	37
SLNCSFH52	52	419	299	210x410x62	Eye	37
SLNCSFH56	56	485	347	210x410x62	Eye	37
SLNCSFH60	60	558	398	210x410x68	Eye	37
SLNCSFH64	64	633	452	210x410x68	Eye	37
SLNCSFH66	66	674	482	240x410x76	Eye	37
SLNCSFH68	68	610	436	240x410x68	Eye	37
SLNCSFH70	70	647	462	240x410x76	Eye	37
SLNCSFH72	72	684	489	240x410x76	Eye	37
SLNCSFH74	74	723	516	240x410x76	Eye	37
SLNCSFH76	76	763	545	240x410x76	---	---
SLNCSFH78	78	803	574	240x410x76	---	---
SLNCSFH80	80	845	604	240x460x84	---	---
SLNCSFH82	82	888	634	240x460x84	---	---
SLNCSFH84	84	932	666	240x460x84	---	---
SLNCSFH86	86	977	698	240x460x84	---	---
SLNCSFH88	88	1022	730	254x508x90	---	---
SLNCSFH90	90	1069	764	254x508x90	---	---
SLNCSFH92	92	1118	798	254x508x90	---	---