Model:6‘’~40‘’
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A214C A210A A226 A315B ASTM-A500 A707 A808M E234B E235C SS41 G3452 SD390 RB400 etcoil casing:J55 K55 N80 L80 P110 C90 C95 T95 P110 Q125,sucker rod high precision pipe,BTC LTC STC EUE.russia standard:Gost 9940 /9941-81/8732/8734/1050/ Grade-20 S45 S48 S20C.according API 5CT 5L ,DNV,include FBE 2PE 3PE 2PP 3PP.NACE MR0175
