split pin steel size 6x60 mm as per is 549 2005 warranty period 30 months after the date of delivery split pin steel size 6x60 mm as per is 549 2005 warranty period 30 months after the date of delivery split pin size 5x60 mm as per is 549 2005 warranty period 30 months after the date of delivery split pin steel size 6x60 mm as per is 549 2005 warranty period 30 months after the date of delivery split pin size 5x60 mm as per is 549 2005 warranty period 30 months