We can supply seamless steel pipes with OD 1/8"(10.3mm)-56"(1422.4mm) and wall thickness below 5.91"（150mm) according to ASTM/ASME、DlN/EN、BS、JlS、GOST、GB standard and customers’special requirements . Materials are mainly including carbon steel pipes, alloy steel pipes, and stainless steel pipes, also the tubing for applications of gas cylinder, structure, high/low -temperature resistance, high/low -pressure resistance and corrosion resistance.
| S/N | Steel No. | China GB Srandard | United States of America ASTM/ASME Standard | Germany DIN Standard | Erope EN standard | CIS GOST Standard | |||||
| Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | ||
| Ⅰ | GB 3087 | 10# | A/SA53 | GR.A | 1626 | ust37.0 | 8732-78 | 10 | |||
| 20# | GR.B | st44.0 | 20 | ||||||||
| Ⅱ | 1.0345 |
A/SA 106 A/SA 210 |
GR.A | 17175 | ST 35.8 | 10216-2 | P235GH | ||||
| 1.0425 | GB 5310 | 20G | GR.B/A1 | ST 45.8 | P265GH | TU 14-3R-55-2001 | 20 | ||||
| 25MnG | GR.C | 17Mn4 | 20-PV | ||||||||
| Ⅲ | 1.7362 | GB 9948 | 1Cr5Mo |
A/SA 213 A/SA 335 |
T5/P5 | 17176 | 12CrMo195 | 10216-2 | X11CrMo5 | 550-75 | 15Ch5M |
| 1.7383 | 1Cr9Mo | T9/P9 | X12CrMo9-1 | 11CrMo9-10 | |||||||
| 1.5415 | GB 5310 | 15MoG | T1/P1 | 17175 | 15Mo3 | 16Mo3 | |||||
| 12Cr1MoVG |
TU 14-3R- 55-2001 |
12Ch1MF-PV | |||||||||
| T11/P11 | |||||||||||
| 1.7335 | 15CrMoG | T12/P12 | 13CrMo44 | 10216-2 | 13CrM04-5 | 15ChM | |||||
| 1.738 | 12Cr2MoG | T22/P22 | 10CrMo910 | 10CrMo9-10 | 12Ch2MF SR | ||||||
| 1.6368 | 15Ni1MnMoNbCu | T36/P36 | 15NiCuMoNb5 | 15NiCuMoNb5-6-4 | |||||||
| 1.4903 | 10Cr9Mo1VNbN | T91/P91 | X10CrMoVNb9-1 | X10CrMoVNb9-1 | 10Ch9MFB-SH | ||||||
| 1.4901 | 10Cr9MoW2VNbBN | T92/P92 | X10CrMoVNb9-2 | X10CrMoVNb9-2 | |||||||
| Ⅳ | 1.4301 |
GB/T 14976 GB13296 |
06Cr19Ni10 |
A/SA 213/312 |
TP304 | 17456/58 | X5CrNi1810 | 10216-5 | X5CrNi18-10 | 9941-81 | 08Ch18N10 |
| 1.4948 | 07Cr19Ni10 | TP304H | X7CrNi1810 | X7CrNi18-10 | 0Ch18N10 | ||||||
| 1.4307 | 022Cr19Ni10 | TP304L | X2CrNi1911 | X2CrNi19-11 | 000Ch18N11 | ||||||
| 1.4401 | 06Cr17Ni12Mo2 | TP316 | X5CrNiMo17122 | X5CrNiMo17-12-2 | 0Ch17N16M3T | ||||||
| 1.4404 | 022Cr17Ni12Mo2 | TP316L | X2CrNiMo17132 | X2CrNiMo17-12-2 | 000Ch17N13M2 | ||||||
| 1.4541 | 06Cr18Ni11Ti | TP321 | X6CrNITi1810 | X6CrNiTi18-10 | 0Ch18N10T | ||||||
| 1.4550 | 06Cr18Ni11Nb | TP347 | X6CrNiNb1810 | X6CrNiNb18-10 | 08Ch18N12B | ||||||
| Ⅴ | 1.0451 | GB/T18984 | 09DG | A/SA 333 | Gr.1 | 17173 | TT35 | 10216-4 | P215NL | ||
| 1.5637 | 06Ni3MoDG | Gr.3 | 10Ni14 | 12Ni14 | |||||||
| 1.0452 | 10MnDG | Gr.6 | 11MnNi53 | P255QL | |||||||
| Ⅵ | 1.0457 | GB/T 9711 | L245N |
API 5L PSL1/2 |
BN | 17172 | StE240.7 | 10208-1/2 | L245NB |
R ISO 3183-2009 |
L245N |
| 1.0484 | L290N | X42N | StE290.7 | L290NB | L290N | ||||||
| 1.0409 | L320N | X46N | StE320.7 | L320N | |||||||
| 1.0582 | L360N | X52N | StE360.7 | L360NB | L360N | ||||||
| 1.0578 | L390Q | X56Q | StE385.7 | L390Q | |||||||
| 1.8947 | L415Q | X60Q | StE415.7 | L415QB | L415Q | ||||||
| 1.8952 | L450Q | X65Q | StE445.7 | L450QB | L450Q | ||||||
| 1.8955 | L485Q | X70Q | StE485.7 | L485QB | L485Q | ||||||
| 1.8957 | L555Q | X80Q | L555QB | L555Q | |||||||
| Ⅶ | 1.7218 | GB 18248 | 30CrMo | A/SA 519 | 4130 | 17204 | 10083 | 25CrMo4 | 4543-71 | 30ChM | |
| 1.7220 | 35CrMo | 4135 | 34CrMo4 | 34CrMo4 | 35ChMA | ||||||
| Ⅷ | 1.006 | 1629 | St52 | 10297-1 | E355 | 17066-94 | 09G2S | ||||
| 1.0576 | 1630 | St52.4 | 10210-1 | S355J2H | |||||||
