The American Petroleum Institute API 5L specification is for line pipes used in pipelines for transporting oil, natural gas, and water. The carbon steel pipes that are covered by this specification...
The American Petroleum Institute API 5L specification is for line pipes used in pipelines for transporting oil, natural gas, and water. The carbon steel pipes that are covered by this specification can be either seamless or welded. The API 5L Grade B pipe includes PSL1 and PSL2 line pipes, and they are classified according to the different end uses and service requirements, such as the transmission of oil, natural gas, or water. The strength of the carbon steel pipes is measured in psi or MPa. The minimum yield strength of Grade B carbon steel pipes is 205MPa, while the minimum tensile strength is 415MPa. Line pipes are also available in higher strengths, such as X42, X46, X52, X56, X60, X65, X70, and X80. These higher strength grades can be used for the transmission of oil and gas in high-pressure and high-temperature environments.
| Steel Grade | Mass fraction, % based on heat and product analyses a,g | ||||||
| C | Mn | P | S | V | Nb | Ti | |
| max b | max b | max | max | max | max | max | |
| Welded Pipe | |||||||
| Grade B | 0.26 | 1.2 | 0.3 | 0.3 | c,d | c,d | d |
a. Cu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; and Mo ≤ 0.15%,
b. For each reduction of 0.01% below the specified maximum concentration for carbon, an increase of 0.05% above the specified maximum concentration for Mn is permissible, up to a maximum of 1.65% for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; and up to a maximum of 2.00% for grade L485 or X70.,
c. Unless otherwise agreed NB + V ≤ 0.06%,
d. Nb + V + TI ≤ 0.15%,
e. Unless otherwise agreed.,
f. Unless otherwise agreed, NB + V = Ti ≤ 0.15%,
g. No deliberate addition of B is permitted and the residual B ≤ 0.001%
Q: Will you delivery the goods on time?
A: Yes,we promise to deliver on time,indemnity clause in contract terms will work if we couldn’t.
Q: Do you provide samples ? Is it free or extra ?
A: The samples are free,you just need to pay the courier freight.
Q: How could you guarantee your product ？
A: Products are manufactured by certified workshops, inspected by professional inspector. We also issue the warranty MTC to guarantee the quality.
