• GBT 9711 PSL2 Steel pipe for pipeline transportation systems in petroleum and natural gas industries

Chinese standard GB/T 9711 is the equivalent of the America standard API 5L. Product Specification Level includes PSL1 and PSL2. The size of pipeline is from 38mm to 720mm(1.5 in. ~28 in.). IMRISTEEL can also process anti-corrosion coating on the surface of the pipe such as 3LPE, 3LPP and FBE coating. Pipeline pipe is our company’s most dominant product. We used to provide line pipe to the Shell. If you are in need, please contact [email protected] to get the prompt quote.

Specifications

Standard GB/T 9711
Steel Grade/Material L290/X42, L320/X46, L360/X52, L390/X56, L415/X60, L450/X65, L485/X70
PSL level PSL2
Outer Diameter(OD) 1 1/2”-28”(38mm-720mm)
Wall Thickness(WT) 2.6mm-60mm
Length 5.8-16m or OEM
Packing PE,BE,Plastic cap or bundling
Surface Treatmengt Black paint,3LPE,3lPP,FBE…OEM
Section Shape Round
Technique Seamless hot rolled
Application Oil and Gas field,chemical engineering,energy engineering,water Transportation…
Sour service No
Place of Origin China
MOQ 25 ton
Transportation 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port
→America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea,
Australia…(shipping)

2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”)
Khorgos port(Пограничный пункт “Хоргос”)
→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)

W.T.≤25.0mm(0.984in) PSL2 Pipe line Chemical Composition(%)
Grade C Si Mn P S V Nb TI CEIIW CEPcm
BR ≤0.024 ≤0.4 ≤1.2 ≤0.025 ≤0.015 a a ≤0.04 ≤0.043 ≤0.25
L290R/X42R ≤0.024 ≤0.4 ≤1.2 ≤0.025 ≤0.015 ≤0.06 ≤0.05 ≤0.04 ≤0.043 ≤0.25
BN ≤0.024 ≤0.4 ≤1.2 ≤0.025 ≤0.015 a a ≤0.04 ≤0.043 ≤0.25
L290N/X42N ≤0.024 ≤0.4 ≤1.2 ≤0.025 ≤0.015 ≤0.06 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L320N/X46N ≤0.024 ≤0.4 ≤1.4 ≤0.025 ≤0.015 ≤0.07 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L360N/X52N ≤0.024 ≤0.45 ≤1.4 ≤0.025 ≤0.015 ≤0.10 ≤0.05 ≤0.04 ≤0.043 ≤0.25
 L390/X56N ≤0.024 ≤0.45 ≤1.4 ≤0.025 ≤0.015 ≤0.10 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L415N ≤0.024 ≤0.45 ≤1.4 ≤0.025 ≤0.015 ≤0.10 ≤0.05 ≤0.04 a a
BQ ≤0.018 ≤0.45 ≤1.4 ≤0.025 ≤0.015 ≤0.05 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L290Q/X42Q ≤0.018 ≤0.45 ≤1.4 ≤0.025 ≤0.015 ≤0.05 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L320Q/X46Q ≤0.018 ≤0.45 ≤1.4 ≤0.025 ≤0.015 ≤0.05 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L360Q/X52Q ≤0.018 ≤0.45 ≤1.5 ≤0.025 ≤0.015 ≤0.05 ≤0.05 ≤0.04 ≤0.043 ≤0.25
 L390/X56Q ≤0.018 ≤0.45 ≤1.5 ≤0.025 ≤0.015 ≤0.07 ≤0.05 ≤0.04 ≤0.043 ≤0.25
L415Q/X60Q ≤0.018 ≤0.45 ≤1.7 ≤0.025 ≤0.015 a a a ≤0.043 ≤0.25
L450Q/X65Q ≤0.018 ≤0.45 ≤1.7 ≤0.025 ≤0.015 a a a ≤0.043 ≤0.25
L485Q/X70Q ≤0.018 ≤0.45 ≤1.8 ≤0.025 ≤0.015 a a a a a
a: according to API standard or requirements
PSL2 Pipe line Mechanical properties
Grade Yield strength  Rt0,5 Mpa(psi) Tensile strength Rm Mpa(psi) Rt0,5/Rm Elongation 50mm or 2in
BR/BN/BQ 245(35500)-450(65300) 415(60200)-655(95000) ≤0.93 Af
L290R/L290N/L290Q  (X42) 290(42100)-495(71800) ≥415(60200) ≤0.93 Af
L320N/L320Q (X46) 320(46400)-525(76100) 435(63100)-655(95000) ≤0.93 Af
L360N/L360Q (X52) 360(52200)-530(76900) 460(66700)-760(110200) ≤0.93 Af
 L390N/ L390Q (X56) 390(56600)-545(79000) 490(71100)-760(110200) ≤0.93 Af
X60N/X60Q (X60) 415(60200)-565(81900) 520(75400)-760(110200) ≤0.93 Af
L450Q (X65) 450(65300)-600(87000) 535(77600)-760(110200) ≤0.93 Af
L485Q (X70) 485(70300)-635(92100) 570(82700)-760(110200) ≤0.93 Af
Tolerance of pipe size
Pipe Body (straightness) Pipe end (straightness) Pipe Body (roundness) Pipe end (roundness)
-0.8(0.031),+0.4(0.016) -0.8(0.031),+0.4(0.016) 1.2(0.048) 0.9(0.036)
±0.0075D -0.4(0.016),P5 0.02D 0.015D
±0.0075D ±0.005D,Max±1.6(0.063) 0.02D 0.015D
±0.0.01D ±2.0 0.015D,Max 15(0.6) 0.01D,Max 13(0.5)
Tolerance of wall thickness
Wall thickness t mm(in) Tolerance mm(in)
t≤4(0.157) +0.6(0.024);-0.5(0.02)
4(0.157)t25(0.984) +0.15t;-0.125t
t≥25(0.984) +3.7(0.146) or +0.1t,larger value; -3.0(0.12) or -0.1t,larger value