Line Pipe API 5L :
1.cold expanded pipe----SMLS pipe
2.cold-sized pipe----SMLS pipe
3.cold finishing pipe----SMLS pipe
4.combination welded pipe(COW)
5.combination helical welded pipe(COWH)
6.combination longitudinal welded pipe(COWL)
7.combination welding seam(COW)
8.continuous welded pipe(CW)
9.electric welded pipe(EW)
10.high-frequency welded pipe(HFW)
11.laser welded pipe(LW)
12.submerged-arc longitudinal welded pipe(SAWL)
13.submerged-arc helical welded pipepipe(SAWH)
grade: PSL1  and PSL2
PSL1:
L175 or A25、L175P or A25P、L210 or A、L245 or B / L290 or X42、L320 or X46、L290 or X42、L290 or X46、L360 or X52、L390 or X56
L415 or X60、L450 or X65、L485 or X70
PSL2:
L245R or BR/L290R or X42R / L245N or BN/L290N orX42N  L320N or X46N、L360N or X52N、L390N or X56N
L415N or X60N / L245Q or BQ/L290Q or X42Q  L320Q or X46Q、L360Q or X52Q、L390Q or L56Q
L415Q or X60Q、L450Q or X65Q、L485Q or X70Q、L555Q or X80Q、L625Q or X90Q、L690Q or X100Q/
L245M or BM/L290M or X42M L320M or X46M、L360M or X52M、L390M or X56ML415M or X60M、L450M or X65M 、L485M or 70M、L555M or 80M、L625Q or X90Q、L690Q or X100Q、L830 or 120Q