OD: 6mm ~ 219mm WT: 0.25mm ~ 3mm Type: Round, embossed, Square,Elliptical /oval, Flat oval 201 welding ... , 50*25 , 50*50 , 55*13 , 60*40 , 60*60 , 70*30 , 73*43 , 80*40 , 80*60 , 80*80 , 95 ... *45, 20*50, 28*57, 35*53, 30*60, 30*70, 20*70, 43*58, 34*64, 40*60, 38*76, 43 ... , 40*80, 55*93, 60*90, 46*100, 50*107, 70*105, 58*115, 50*120, 80*120, 63*133, 50*150 ...