API SPEC 5L PSL2 X52N (L360N) Pipeline Steel Coil API SPEC 5L PSL2 X46N (L320N) Pipeline Steel Coil API SPEC 5L PSL2 X42N (L290N) Pipeline Steel Coil API SPEC 5L PSL2 GRADE BN (L245N) Pipeline Steel Coil API SPEC 5L PSL2 X60N (L415N) Pipeline Steel Coil API SPEC 5L PSL2 X56N (L390N) Pipeline Steel Coil