... : about 98.50$ CS PIPESTANDARDSTEEL GRADEAPPLICATIONAPPLICATIONJ55,K55,N80,L80,P110Specification for Casing and TubingAPI 5LA,B,X42/X46/X52/X56Specification ... .BBlack Steel PipeASTM A106GR.A / GR.BSeamless Carbon Steel For High Temperature ServiceASTM A179LOW CARBON STEELSeamless Cold-Drawn Low-Carbon Steel Heat ...