... 240-400g/m2End treatmentplain,beveled, /threaded with sockets/coupling and plastic caps/flangeSurface treatmenthot dipped galvanized, oiled or ... and water supply projects; building, central air-conditioning pipe, fence, threading pipe, rolling doors, metal frame, support tube, furniture ... according to your requirements,2.anti-corrosion and high-temperature resistant with black painting3.all the products ...