astm a335 p22 chrome steel pipe 

astm a335 p22 chrome steel pipe Size range: O.D.:6-420mm W.T.:1-50mm L: 12000mm or Cut to Short Pieces as specified length Delivery Condition: BK, BKW, BKS, GBK, NBK   Seamless precision Steel Tubing Characteristic: Good concentricity Good OD and ID tolerance High Precision Stable quality Smooth Roughness TORICH QUALITY ASSURANCE   Production Processs: Seamless Steel Tube and Cold Drawing Production Applications: For Boilers,Superheaters,Heat-Exchangers     Steel Grade and Chemical Compositions: Steel Grade C Mn P S Si Cr Mo max max max max max min P5 0.15 …