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Standard:API SPEC 5L/GB/T9711.2
Grades:A,X42,X52,X60,X65,X70;
Specifications: 8-1240×1-200mm;
Applications: It is used to transmit natural gas, water and petroleum in oil and natural gas industry.

API SPEC 5L-2011 is a standard of pipeline published by American Petroleum Institute. The standard is very common all over the world. Line pipe is to transport the oil, gas or water put out from the ground into petroleum and natural gas industry enterprises. Pipe line includes seamless steel pipe and welded steel pipe, the pipe end has flat end, threaded end and socket end. The connection method is stud welding, coupling connection, socket connection etc. The main material is B、X42、X46、X56、X65、X70.

Pipe Line
pipe line

Specifications: 8-1240×1-200mm
Standard: API SPEC 5L  GB/T9711
Applications: It is used to transmit natural gas, water and petroleum in oil and natural gas industry.
Grades: B、X42、X52、X60、X65、X70 L245 L290 L320 L360 L390 L450 L485

Dimension Tolerance:
Types Outer Diameter (D) Wall Thickness(S)
API SPEC 5L line pipe OD (mm) Allowed Tolerance (mm) OD(mm) Allowed Tolerance (mm)
≥60.3且S<20 ±0.75% ≤73.0 +15%,-12.5%
≥60.3且S≥20 ±1.00% >73.0且S<20 +15%,-12.5%
>73.0且S≥20 +17.5%,-10

Mechanical Properties:
Standard Grades Tensile Strength (Mpa) Yield Strength Yield Ration Elogation (%) Impact Energy Akv (J) Heat treatment condition
API SPEC 5L
GB/T9711.2
B ≥415 245~440 ≤0.80 22 ≥40 normalizing
X42 ≥415 290~440 ≤0.80 21 ≥40 normalizing
X52 ≥460 360~510 ≤0.85 20 ≥40 normalizing
X60 ≥520 415~565 ≤0.85 18 ≥40 normalizing
X65 ≥535 450~570 ≤0.90 18 ≥40 normalizing
X70 ≥570 485~605 ≤0.90 18 ≥40 normalizing

Chemical Compositions:
Standard Grade Chemical Compositions CEV(%)
C Si Mn P S V Nb Ti
API SPEC 5L
GB/T9711.2
B ≤0.16 ≤0.40 ≤1.10 ≤0.020 ≤0.010 - - - ≤0.42
X42 ≤0.17 ≤0.40 ≤1.20 ≤0.020 ≤0.010 ≤0.05 ≤0.05 ≤0.04 ≤0.42
X52 ≤0.20 ≤0.45 ≤1.60 ≤0.020 ≤0.010 ≤0.10 ≤0.05 ≤0.04 ≤0.45
X60 ≤0.21 ≤0.45 ≤1.60 ≤0.020 ≤0.010 ≤0.15 ≤0.05 ≤0.04 -
X65 ≤0.16 ≤0.45 ≤1.60 ≤0.020 ≤0.010 ≤0.06 ≤0.05 ≤0.06 ≤0.45
X70 ≤0.16 ≤0.45 ≤1.70 ≤0.020 ≤0.010 ≤0.06 ≤0.05 ≤0.06 ≤0.45

Tips:
1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10%
2.V+Nb+Ti≤0.15
3.X60、X65、X70 through consultation Mo≤0.35%



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