Seamless pipes
Products including: oil casing, oil tubing, pipeline pipe, offshore structural pipe, offshore pile leg pipe, alloy structural pipe, boiler pipe, nuclear power pipe, fertilizer pipe, mechanical pipe, cracking pipe, fluid transport pipe, gas cylinder pipe, cylinder sleeve pipe, support pipe, low-temperature pipeline pipe, boom pipe, etc
- Outer diameter: 48～1219mm
- Wall thickness: 3.5～170mm
- Application field: Energy, petrochemical, marine engineering, engineering machinery,construction, automobile, etc.
Typical Steel Grades/Production Standard
| Product Type | Typical Steel Grades | Production Standard | Size Range |
| H2S corrosion-resistant series of oil casings and tubing | C110、ZT/TP110S、ZT/TP110SS、ZT/TP125S、ZT/TP125SS | API SPEC 5CT、Enterprise Standard | 60～508mm |
| CO2 corrosion-resistant series of oil casings and tubing | L80-13Cr、ZT/TP110-SUP13Cr | API SPEC 5CT、ISO13680 | 60～406mm |
| CRA corrosion-resistant series of oil casings and tubing | ZT/TP125-028、ZT/TP110-G3 | ISO13680 | 60～245mm |
| High-strength and high-toughness series of oil casings and tubing | ZT/TP125T、ZT/TP130TT、ZT/TP150TT、ZT/TP155V、ZT/TP165V | Enterprise Standard | 114～508mm |
| Oil casings for shale gas exploration and development | ZT/TP110SG、ZT/TP125SG、ZT/TP140SG、ZT/TP155SG | Enterprise Standard | 114～508mm |
| Oil casings for thermal exploration and production wells | ZT/TP80H、ZT/TP90H、ZT/TP100H、ZT/TP110H、ZT/TP125H | Enterprise Standard | 114～508mm |
| Line Pipe | B-X100Q/L245-L690Q、BNS-X70QS、BNO-X100QO | API SPEC 5L、ISO 3183、GB/T 9711、IOGP S616等 | 60～1219mm |
| Ocean engineering structural pipes | Q235-Q690、B-X100Q、NV A32 ~NV EO690 | GB/T 8162、GB/T 1591、API SPEC 5L、DNV-OS-B101、EN 10210、EN 10225等 | 60～1219mm |
| Nuclear power pipes | WB36CN1、20控Cr1、A335P22 | User Agreement | 48～711mm |
| Large-diameter cylinder tubes | 30CrMo、34CrMo4、4130X | User Agreement | 508～1219mm |
| High-pressure boiler tubes | 20G、12Cr1MoVG、P22、P5、P9、P91、P92 | GB/T5310、ASME SA335M、User Agreement | 48～1219mm |
| Seamless steel tubes | TP450RD、TP550RD、TP850RD | Technology Agreement | 180～720mm |
| Seamless steel tubes for cantilever | BJ770、BJ890 | Technology Agreement | 60～406mm |
| Drill pipes | G105、SS105、S135、TP150D | API 5DP、Technology Agreement | 60～168mm |
| Premium Connection Products | TP-CQ、TP-G2、TP-G4、TP-TW、TP-FE、TP-WG、TP-QR、TP-BMS、TP-TS、TP-NF、TP-SFJ、TP-ISF、TP-FJⅡ、TP-JC、ZT-XC、ZT-HTC、ZT-FJE and other series | Technology Agreement、Enterprise Standard | 48～660mm |