B,X42,X52,X60,X65,X70 L245 L290 L320 L360 L390 L450 L485 steel pipe for gas,oil and water pipline
Standard: API SPEC 5 L
use: used to oil,Natural gas Industrial gas, water and oil transfer of API SPEC 5 l - 2011, is The American petroleum institute,Compile and publish, common all over the world.Line pipe, the shaft is out of the ground of the oil, gas or water, through the pipeline ductules into oil and gas industry enterprises.Line pipe including both seamless and welded pipe, the pipe end with flat end, threaded end and socket end;Its connection mode for stud welding, coupling connection, socket connection, etc.The main material for B, X42, X46, X56, X65 and X70 steel grade.Our company in August 2009 by the United States API certification (API 5 ct and API 5 l).
Mechanical properties:
| standard | brand | Tensile strength(MPa) | The yield strength(MPa) | showed | elongation(%) | 0 ℃Impact energy | Heat treatment state |
| Akv(J) | |||||||
| API SPEC 5L | B | P 415 | 245 ~ 440 | 0.80 or less | 22 | 40 or higher | normalizing |
| GB/T9711.2 | |||||||
| X42 | P 415 | 290 ~ 440 | 0.80 or less | 21 | 40 or higher | normalizing | |
| X52 | P 460 | 360 ~ 510 | 0.85 or less | 20 | 40 or higher | normalizing | |
| X60 | P 520 | 415 ~ 565 | 0.85 or less | 18 | 40 or higher | normalizing | |
| X65 | P 535 | 450 ~ 570 | 0.90 or less | 18 | 40 or higher | Quenching + tempering | |
| X70 | P 570 | 485 ~ 605 | 0.90 or less | 18 | 40 or higher | Quenching + tempering |
Chemical composition:
| standard | Grade | Chemical composition (%) | CEV(%) | |||||||
| C | si | Mn | P | S | V | Nb | Ti | |||
| API SPEC 5L | B | 0.16 or less | 0.40 or less | 1.10 or less | 0.020 or less | 0.010 or less | - | - | - | 0.42 or less |
| GB/T9711.2 | ||||||||||
| X42 | 0.17 or less | 0.40 or less | 1.20 or less | 0.020 or less | 0.010 or less | 0.05 or less | 0.05 or less | 0.04 or less | 0.42 or less | |
| X52 | 0.20 or less | 0.45 or less | 1.60 or less | 0.020 or less | 0.010 or less | 0.10 or less | 0.05 or less | 0.04 or less | 0.45 or less | |
| X60 | 0.21 or less | 0.45 or less | 1.60 or less | 0.020 or less | 0.010 or less | 0.15 or less | 0.05 or less | 0.04 or less | agreement | |
| X65 | 0.16 or less | 0.45 or less | 1.60 or less | 0.020 or less | 0.010 or less | 0.06 or less | 0.05 or less | 0.06 or less | 0.45 or less | |
| X70 | 0.16 or less | 0.45 or less | 1.70 or less | 0.020 or less | 0.010 or less | 0.06 or less | 0.05 or less | 0.06 or less | 0.45 or less | |
