Product Uses and Introduction

This series of products is for pipeline steel, and the material selection needs to be determined based on the specific circumstances. Below, we will introduce the thickness range, delivery condition, and applicable standards for each grade that we can provide. We hope this information is helpful. If you have any questions about the products or need a quote, please contact us via email. Because some grades can be categorized into multiple types according to their applications, this may cause some inconvenience in your search, for which we sincerely apologize. We also welcome any suggestions you may have. Thank you very much!

Spot inventory inquiry Spot inventory

If conditions permit, we can also provide steel mill customization services, where the thickness, width, and length can all be made to your needs, just like a tailor making clothes for you, implementing personalized orders.

Steel mill customized business email: customize@cehesteel.com

Scope of supply

Implementation Standards Grade Thickness range Delivery status
API Spec5L/ISO3183 L245 or Gr.8 ≤40 CR
L290 or X42 ≤40 CR
L320 or X46 ≤40 CR
L360 or X52 ≤40 CR/TM
L390 or X56 ≤40 CR/TM
L415 or X60 ≤40 CR/TM
L450 or X65 ≤40 TM
L485 or X70 ≤40 TM
L555 or X80 ≤35 TM
L625 or X90 ≤30 TM
L690 or X100 ≤30 TM
L830 or X120 ≤25 TM
L360M or X52MS ≤30 TM
L390M or X56MS ≤30 TM
L415M or X60MS ≤30 TM
L450M or X65MS ≤30 TM
L485M or X70M ≤30 TM
L555M or X80M ≤30 TM

Grades and chemical compositions of general strength and high strength steel

Grade C Si Mn P S Nb V Ti
L210 ≤0.22 ≤0.35 ≤0.90 ≤0.030 ≤0.030 The supplier may select one of the three elements, niobium, vanadium, and titanium,
or any combination thereof.
L245 ≤0.26 ≤0.35 ≤1.20 ≤0.030 ≤0.030
L290 ≤0.26 ≤0.35 ≤1.30 ≤0.030 ≤0.030
L320 ≤0.26 ≤0.35 ≤1.40 ≤0.030 ≤0.030
L360 ≤0.26 ≤0.35 ≤1.40 ≤0.030 ≤0.030
L390 ≤0.26 ≤0.40 ≤1.40 ≤0.030 ≤0.030
L415 ≤0.26 ≤0.40 ≤1.45 ≤0.030 ≤0.030
L450 ≤0.26 ≤0.40 ≤1.30 ≤0.030 ≤0.030
X42 ≤0.26 ≤0.35 ≤1.30 ≤0.030 ≤0.030
X46 ≤0.27 ≤0.35 ≤1.40 ≤0.030 ≤0.030
X52 ≤0.22 ≤0.35 ≤1.40 ≤0.030 ≤0.030
X56 ≤0.26 ≤0.40 ≤1.40 ≤0.030 ≤0.030
X60 ≤0.26 ≤0.40 ≤1.40 ≤0.030 ≤0.030
X65 ≤0.26 ≤0.40 ≤1.40 ≤0.030 ≤0.030
Note: For steel grades not lower than L290, for every 0.01% decrease in carbon content compared to the specified maximum value, the manganese content is allowed to increase by 0.05% compared to the specified maximum value. however, for L290, L315, and L360 steel grades, the manganese content must not exceed 1.45%.
Grade    Use C¹,⁴ Si Mn¹ P S V+Nb+Ti other CEV⁴ Pcm
X70M ordinary ≤0.26 ≤0.40 ≤1.65 ≤0.030 ≤0.030 ≤0.15²) 3) 一 一
  high performance ≤0.12 ≤0.35 ≤1.70 ≤0.020 ≤0.005 ≤0.15²) 3) 一 ≤0.22
X80M    ordinary
 		 ≤0.22 ≤0.40 ≤1.85 ≤0.030 ≤0.030 ≤0.15² 3) 一 一
  high performance ≤0.12 ≤0.35 ≤1.90 ≤0.020 ≤0.005 ≤0.15² 3) 一 ≤0.23
X90M ordinary ≤0.10 ≤0.55 ≤2.10 ≤0.020 ≤0.010 ≤0.15² 一 ≤0.25
X100M ≤0.22 ≤0.40 ≤2.00 ≤0.030 ≤0.030 ≤0.15² 3) 一 ≤0.25
L360MS acidic ≤0.10 ≤0.35 ≤1.25 ≤0.018 ≤0.003 ≤0.15² 3) ≤0.35 ≤0.20
X52MS ≤0.10 ≤0.35 ≤1.25 ≤0.018 ≤0.003 ≤0.15² 3) ≤0.35 ≤0.20
X60MS ≤0.10 ≤0.35 ≤1.40 ≤0.018 ≤0.003 ≤0.152 3) ≤0.39 ≤0.21
X65MS ≤0.10 ≤0.35 ≤1.50 ≤0.018 ≤0.003 ≤0.15² 3) ≤0.41 ≤0.21
X42MO ocean ≤0.12 ≤0.40 ≤1.35 ≤0.020 ≤0.01 ≤0.12² 3) 一 ≤0.19
X46MO ≤0.12 ≤0.45 ≤1.35 ≤0.020 ≤0.01 ≤0.142 3) 一 ≤0.20
X52MO ≤0.12 ≤0.45 ≤1.65 ≤0.020 ≤0.01 ≤0.14²) 3) 一 ≤0.20
X56MO ≤0.12 ≤0.45 ≤1.65 ≤0.020 ≤0.01 ≤0.18² 3) 一 ≤0.21
X60MO ≤0.12 ≤0.45 ≤1.65 ≤0.020 ≤0.01 ≤0.20² 3) 一 ≤0.21
X65MO ≤0.12 ≤0.45 ≤1.65 ≤0.020 ≤0.01 ≤0.242 3) 一 ≤0.22
X70MO ≤0.12 ≤0.45 ≤1.75 ≤0.020 ≤0.01 ≤0.24² 3) 一 ≤0.22
Note 1: For steel grades not lower than X42, for every 0.01% decrease in carbon content compared to the specified maximum value, the manganese content is allowed to increase by 0.05% compared to the specified maximum value. for X70 steel grade, the manganese content shall not exceed 1.8%. for X80 steel grade, the manganese content shall not exceed 1.95%. for X100 steel grade, the manganese content shall not exceed 2.00%.
2: The supplier may select one of the three elements, niobium, vanadium, and titanium, or any combination thereof;
3: Other chemical components may be restricted and supplied upon agreement between the supplier and the buyer.                                                                                4: When C ≤ 0.12%, only Pcm is required.Pcm=C+Si/30+(Cr+Mn+Cu)/20+Mo/15+V/10+Ni/60+5B,CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+
Cu)/15。      

Chemical composition of pressure vessel plates of various grades &Mechanical properties

Grade Yield strength
ReL,MPa		 Tensile strength
Rm,MPa		 ElongationA% Impact test Comparable API standard steel grades
KV₂,J
0℃
L210 ≥210 ≥335 ≥25 ≥27 A
L245 ≥245 ≥415 ≥21 B
L290 ≥290 ≥21 X42
L320 ≥320 ≥435 ≥20 X46
L360 ≥360 ≥460 ≥19 X52
L390 ≥390 ≥490 ≥18 X56
L415 ≥415 ≥520 ≥18 X60
L450 ≥450 ≥535 ≥18 X65
Grade Use Control method Sampling direction Yield strength
Rt₀.₅,MPa¹		 Tensile strength
Rm，MPa		 The ratio of yield strength Rt₀.₅/Rm Impact test   DWTT HV10
At 1/4
thickness
℃ CVNJ SAJ ℃ SA%
X70M ordinary SSAW 45(or30)° ≥510 ≥570 ≤0.93 0  ≥70 ≥90 一 一 ≤250
ERW Horizontal ≥495
LSAW Horizontal ≥495
high performance

 SSAW 45(or30)° ≥505 -20  ≥190 ≥90 -15  85 
ERW Horizontal ≥495
LSAW ≥495
X80M ordinary SSAW 45(or30)° ≥570 ≥620 ≤0.93 0  ≥80 ≥90 一 一 ≤260
LSAW Horizontal ≥560
high performance SSAW 45(or30)° ≥570 -20  ≥180 ≥90 一 一
LSAW Horizontal ≥560
X90M ordinary SSAW 45(or30)° ≥645 ≥720 ≤0.95 -20  ≥200 ≥90 一 一 ≤300
LSAW Horizontal ≥625 ≥695
X100M ordinary SSAW 45(or30)° ≥720 ≥780 ≤0.95 -10  ≥120 ≥90 一 一 ≤300
LSAW Horizontal ≥700 一
L360MS acidic SSAW 45° ≥395 ≥460 ≤0.90 -20  ≥75 ≥85 一 一 ≤240
ERW Horizontal ≥380
LSAW ≥380
X52MS acidic SSAW 45° ≥395 ≥460 ≤0.90 -20  ≥75 ≥85 一 一 ≤240
ERW Horizontal ≥380
LSAW ≥380
X60MS acidic SSAW 45° ≥450 ≥520 ≤0.92 -20  ≥100 ≥85 -15  85 ≤245
ERW Horizontal ≥430
LSAW ≥430
X65MS acidic SSAW 45° ≥490 ≥535 ≤0.92 -20  ≥120 ≥90 -15  85 ≤250
ERW Horizontal ≥470
LSAW ≥470
X42MO ocean SSAW Horizontal ≥290 ≥415 ≤0.93 -10  ≥80 ≥90 0  85  ≤210
X46MO ≥320 ≥435 ≤0.93 -10  ≥100 ≥90 0  85  ≤220
X52MO ≥360 ≥460 ≤0.93 -10  ≥120 ≥90 0  85  ≤225
X56MO ≥390 ≥490 ≤0.93 -10  ≥140 ≥90 0  85  ≤225
X60MO ≥415 ≥520 ≤0.93 -10  ≥160 ≥90 0  85  ≤235
X65MO ≥450 ≥535 ≤0.93 -10  ≥180 ≥90 0  85  ≤240
X70MO ≥485 ≥570 ≤0.93 -10  ≥190 ≥90 0  85  ≤250