SSAW steel pipe is widely used in liquid, gas and oil.. Outside diameter is from 273mm to 2420mm and thickness from 5-22mm. The standard length is 6 meters and 12 meters. The most popular grades are Q235B (Equivalent with St37.2, S235JR,ASTM A36) and Q345B (Equivalent with St52.3, S355JR), 0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb、16Mn、20#、Q345、L245、L290、40#、60#、X42、X46、X70、X80