rectangular steel pipe OD:25*25mm-180*180mm WT:4.5-65.5mm lenght:5-12m material:API 5L GRADE A,B,XL70,XL50,XL65,XL46 rectangular steel pipe 1) Applicance:pipe used for mechanical structure,hydraulic pressure,pnemuatic linear actuator2) Material:A335P12,20MnG,A106B AND low alloyed steel Q235,Q345(A,B)3) Packing:available for sea transport4) API 5L GRADE A,B,XL70,XL50,XL65,XL465) Coating: painting ...