Seamless Steel Pipe

*STD:API-5L API-5CT GB/T8162-1999 GB/T8163-1999 GB/T3087-1999 GB/T5310-1995
SY/T5037-2000
*MAT: 10# 20# 45# 15CrMo 1Cr18Ni9Ti H40 J55 K55 N80 P110 Gr B
*Grade: X42~X70
*W.T: 6~26mm
*O.D:140~273mm