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ERW steel tube We are able to produce several sizes of pipe. If you do not see the size that you need, please do not hesitate to contact you as we may be able to provide you with a custom order. Standard : GB 150 GB 151GB 699 GB/T14976 GB/T8163 GB 13296 Main steel Grade:10,20,20G, 1Cr18Ni9Ti, 0Cr18Ni9,09CrMoAl, 07Cr2AlMo etc. We can supply other materials below: Casing Pipe/Oil pipe Seamless or welded According to API-5CT standard J55/K55/N80/P110/M65/C95,LTC/STC/BTC; EUE/NUE Seamless line pipe/API-5L PSL 1.A25/A/B/X42/X46/X52/X56/X65/X70/X80 PSL 2:B/X42/X46/X52/X56/X60/X65/X70/X80 Carbon seamless pipe SMLS/ERW/LSAW/SSAW 1. A20-C St52.4/St52 STS49 2. ASTM A106 GR.A/B/C; ASTM A53 GR.A/B/API 5L-GrB 3. DIN1629 4. JIS G3454 5. ASTM A192/A210/A179 6. DIN17175 7. JIS G345 8. JIS G3456 9. BS1387 10. GB/T6728,ASTM A500,EN10217,Q195-235 11. ST35.8/ST45.8 12. DIN2448 13. DIN1629 Alloy pipe Alloy pipe Seamless or welded ASTM/ASME A/SA 210(Gr,A1,C),556,213(T1,T2,T5,T9,T11,T12) 335(Gr P1,P2,P5,P9,P11,P12,P22) 333Gr.1,3,6209T1,T1A,T1b DIN17175(Gr.4538,15Mo3,13CrMo44,10CrMo910) 2448(Gr.ST37),1630(ST37.4,44.4),BS3059(Gr CFS 360,440,243,60,622-440,622-490) 980(Gr.CDSI),6323(CFS3),3602/1(Gr.360,430) A335-P1 15Mo3 STPA12 A335-P2/A213-T2 STBA20 A335-P2/A213T12 13CrMo44 STBA22 A335-P22.A213T22 10CrMo910 STBA24 A335-P5/213-T5 12CrMo195 StA25 A335-P91/A213-T91 Stainless steel pipe Seamless or welded 304(3040Cr18Ni9) 304(00Cr19Ni10) 321(1Cr18Ni9Ti) 321(00Cr18Ni12Mo2Ti) 310S(0Cr25Ni20) 310S(1Cr25Ni20Si2)904L (00Cr20Ni25Mo4)