... :2.0-4.0mm ; Length: 1.5-6m Type: Scaffolding Technics :Welded / forged / stamp Material : Q195-Q235, S235JR, S275JR Surface: Galvanized or ... /BS Shape :Round Head :No thread Application :Structure scaffolding , lookum ,fram, bridge scaffolding , etc. Remarks :Special design available according to customer's ...