Material A105/ A182F11/ A182 F22/ A182 F304L/ A182 F316/ A182 F316L/ Others "ASME 2011a Addenda Sec.Ⅱ" Materials Size(min) 1/2inches and customer's designed size Size(max) Φ60inches and customer's designed size Class(min) 150# and customer's designed found Class(max) 2500#.