... 3.Common pitch:30mm&40mm 4.Used in flooring,walkway Rubber Stair TreadRubber Stair Tread DescriptionStair Tread is made ... the stair tread according to customers sizes.Rubber Stair Tread Specification1.Rubber Stair Tread Standardizations: CountriesNational Standards for ... One of the most widely used gratings,available for flooring,sidewalk,dranage pit cover,stair tread,etc. Serrated: ...