1. material: steel/stainless steel 2. process: forge,cast 3.size:1/2''-100' ... , BS, and customers' drawings for special use;Material Carbon steel, alloy steel, stainless steelPressure RatingsClass 150, 300, 600, 900, 1500 and 2500PN ... PN16, PN25, PN40 and PN64Applications rangeoil industry,chemical industry, water conservancy, electric power, boiler, machinery, metallurgy, sanitary construction etc.