We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanical, construction.
Available Specification as below:
API SPEC 5CT
Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
| Casting | API 5CT | 114~219 x 5.2~22.2 | J55, K55, N80, L80, P110 |
| Tubing | API 5CT | 48.3~114.3 x 3.2~16 | J55, K55, N80, L80, H40 |
API SPEC 5L
This Standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
| Casting | API 5L | 10.3~1200 x1.0~120 | A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2 |
ASTM / ASME
American Society for Testing and Materials(ASTM), American Society of Mechanical Engineers (ASME)
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
| Black and Hot-dipped Zinc-coated Steel Pipes Seamless | ASTM A53 | 0.3~1200 x 1.0~150 | GR.A, GR.B, GR.C |
| Seamless Carbon Steel for High Temperature Service | ASTM A106 | 10.3~1200 x 1.0~150 | GR.B, GR.C |
| Seamless Cold-drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes | ASTM A179 | 10.3~426 x 1.0~36 | Low Carbon Steel |
| Seamless Carbon Steel Boiler Tubes for High Pressure | ASTM A192 | 10.3~426 x 1.0~36 | Low Carbon Steel |
| Seamless Cold-drawn Intermediate Alloy Steel Heat-exchanger and Condenser Tubes | ASTM A199 | 10.3~426 x 1.0~36 | T5, T22 |
| Seamless Medium-carbon Steel Boiler and Superheater Tubes | ASTM A210 | 10.3~426 x 1.0~36 | A1, C |
| Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-exchanger Tubes | ASTM A213 | 10.3~426 x 1.0~36 | T5, T9, T11, T12, T22, T91 |
| Seamless Carbon and Alloy Steel for Mechanical Tubing | ASTM A333 | 1/4″~42″ x SCH20~XXS | Gr1, Gr3, Gr6 |
| Seamless and Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use | ASTM A334 | 1/4″~4″ x SCH20~SCH80 | Gr1, Gr6 |
| Seamless Cold-drawn Carbon Steel Feedwater Heater Tubes | ASTM A556 | 10.3~426 x 1.0~36 | A2, B2 |
GS/ DIN
Germany Safety(GS), Deutsches Institut für Normung(DIN)
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
| Seamless Steel Tubes for Elevated Temperature | DIN 17175 | 10~762 x 1.0~120 | St35.8,St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36 |
| Seamless Steel Tubes | DIN 1629 | 13.5~762 x 1.8~120 | St37.0, St44.0, St52.0 |
| Seamless Precision Steel Tube | DIN 2391 | 4.0~60.0 x 0.5~8 | St35, St45, St52 |
| Seamless Steel Tubes | DIN 2440 | 13.5~165.1 x 1.8~4.85 | St33.2 |
