... to 18"SCH20,30,40,60,STD XSAPI5LGR.B/X42,X52,X605.8m,6m,5m to 12m ... ST42,ST52,A106-a,A106-b, and so on Length 6-12m. As customers requestments. Model Number 10.29mm-508mm. ... tubes foroil casing andtubing in oil wellsAPE SPEC 5LA, B, X42APISeamles Steel Tubesand Pipes forHigh Pressure BoilerGB5310-199520G, ... 1Cr5Mo, JIS G3441-1988 1.Specification: API 5L GR.B SSAW steel pipe line pipe ,2.Size: from 219" ...