API 5L Seamless Steel Pipe

API 5L Seamless Steel Pipe

Seamless steel pipes are derived from solid steel that is in sheet or bar form and is formed into a solid round shape known as “billets” which are then heated and cast over a form such as a piercing rod to create a hollow tube or shell.

Contact us
Product introduction   Seamless steel pipes are derived from solid steel that is in sheet or bar form and is formed into a solid round shape known as “billets” which are then heated and cast over a form such as a piercing rod to create a hollow tube or shell. The abbreviation of seamless steel pipe is smls pipe.
API SPEC 5L
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Line Pipes API 5L Ø10.3~1200 x WT1.0~120 A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2
 
API SPEC 5CT
     Product Name      Executive Standard Dimension (mm) Steel Code / Steel Grade
     Casing API 5CT Ø114~219 x WT5.2~22.2 J55, K55, N80, L80, P110
     Tubing API 5CT Ø48.3~114.3 x WT3.2~16 J55, K55, N80, L80, P110
Technical data Seamless Steel Pipe Chemical Composition and Mechanical Properties This data is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Standard Grade Chemical Composition (%) Mechanical Properties
ASTM A53 C Si Mn P S Tensile STrength(Mpa) Yield STrength(Mpa)
A ≤0.25 – ≤0.95 ≤0.05 ≤0.06 ≥330 ≥205
B ≤0.30 – ≤1.2 ≤0.05 ≤0.06 ≥415 ≥240
ASTM A106 A ≤0.30 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≥415 ≥240
B ≤0.35 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≥485 ≥275
ASTM A179 A179 0.06-0.18 – 0.27-0.63 ≤0.035 ≤0.035 ≥325 ≥180
ASTM A192 A192 0.06-0.18 ≤0.25 0.27-0.63 ≤0.035 ≤0.035 ≥325 ≥180
API 5L PSL1 A 0.22 – 0.90 0.030 0.030 ≥331 ≥207
B 0.28 – 1.20 0.030 0.030 ≥414 ≥241
X42 0.28 – 1.30 0.030 0.030 ≥414 ≥290
X46 0.28 – 1.40 0.030 0.030 ≥434 ≥317
X52 0.28 – 1.40 0.030 0.030 ≥455 ≥359
X56 0.28 – 1.40 0.030 0.030 ≥490 ≥386
X60 0.28 – 1.40 0.030 0.030 ≥517 ≥448
X65 0.28 – 1.40 0.030 0.030 ≥531 ≥448
X70 0.28 – 1.40 0.030 0.030 ≥565 ≥483
API 5L PSL2 B 0.24 – 1.20 0.025 0.015 ≥414 ≥241
X42 0.24 – 1.30 0.025 0.015 ≥414 ≥290
X46 0.24 – 1.40 0.025 0.015 ≥434 ≥317
X52 0.24 – 1.40 0.025 0.015 ≥455 ≥359
X56 0.24 – 1.40 0.025 0.015 ≥490 ≥386
X60 0.24 – 1.40 0.025 0.015 ≥517 ≥414
X65 0.24 – 1.40 0.025 0.015 ≥531 ≥448
X70 0.24 – 1.40 0.025 0.015 ≥565 ≥483
X80 0.24 – 1.40 0.025 0.015 ≥621 ≥552
Carbon Steel Seamless Pipe Chemical Composition and Mechanical Properties
Standard Grade Chemical Composition Mechanical Properties
C Si Mn P S Cr Ni Cu Tensile Strength(Mpa) Yield Strength(Mpa) Elongation(%)
GB/T8163 10 0.07-0.14 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.15 ≤0.25 ≤0.25 335-457 ≥205 ≥24
20 0.17-0.24 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.25 ≤0.25 ≤0.25 410-550 ≥245 ≥20
Q345 0.12-0.20 0.20-0.55 1.20-1.60 ≤0.045 ≤0.045 – – – 490-665 ≥325 ≥21
 
ASTM / ASME
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
 Black and Hot-Dipped Zinc-Coated Seamless Steel Pipes ASTM A53 Ø10.3~1200 x WT1.0~150 Gr.A, Gr.B, Gr.C
Seamless Carbon Steel Pipes for High Temperature Service ASTM A106 Ø10.3~1200 x WT1.0~150 Gr.B, Gr.C
Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes ASTM A179 Ø10.3~426 x WT1.0~36 Low Carbon Steel
Seamless Carbon Steel Boiler Tubes for High Pressure ASTM A192 Ø10.3~426 x WT1.0~36 Low Carbon Steel
Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes ASTM A199 Ø10.3~426 x 1.0~36 T5, T22
Seamless Medium-Carbon Steel Boiler and Superheater Tubes ASTM A210 Ø10.3~426 x WT1.0~36 A1, C
Seamless Ferritic & Austenitic Alloy Steel Boiler, Superheater & Heat-Exchanger Tubes ASTM A213 Ø10.3~426 x WT1.0~36 T5, T9, T11, T12, T22, T91
Seamless Carbon and Alloy Steel for Mechanical Tubing ASTM A333 Ø1/4″~42″ x WT SCH20~XXS Gr.1, Gr.3, Gr.6
Seamless & Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use ASTM A334 Ø1/4″~4″ x WT SCH20~SCH80 Gr.1, Gr.6
Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes ASTM A556 Ø10.3~426 x WT1.0~36 A2, B2
 
DIN
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Seamless Steel Tubes for Elevated Temperature DIN 17175 Ø10~762 x WT1.0~120 St35.8, St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
Seamless Steel Tubes DIN 1629 / DIN 2391 Ø13.5~762 x WT1.8~120 St37.0, St44.0, St52.0, St52.3
Seamless Steel Tubes DIN 2440 Ø13.5~165.1 x WT1.8~4.85 St33.2
Seamless Steel Pipes for Structural Purpose DIN 2393 Ø16~426 x WT1.0~36 RSt34-2, RSt37-2, RSt44-2, St52
 
BS
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Seamless Steel Tubes for Machine Structure BS 970 Ø10~762 x WT1.0~120 Carbon Steel
Seamless Steel Tubes for Boiler and Heat Exchangers BS 3059 Ø10~762 x WT1.0~120 360, 410, 440, 460, 490
Carbon Steel Seamless Pipe Tolerance
Pipe types Pipe Szie(mm) Tolerances
Hot rolled OD All ±1% (min ±0.50mm)
WT All +15%, -12.5%
Cold drawn OD 6～10 ±0.20mm
10～30 ±0.40mm
30～50 ±0.45mm
>50 ±1%
WT ≤1 ±0.15mm
>1～3 +15% -10%
>3 +12.5% -10%
Scroll to Top