Differences between API 5L PSL1 and PSL2 steel pipe

what is psl stands for?

psl is short for product specification level. the product specification level of pipeline pipe can be divided into psl1 and psl2, which can also be said that the quality level can be divided into psl1 and psl2.

psl2 is higher than psl1, and these two specifications have different requirements not only for inspection, but also for chemical composition, mechanical properties and tolerance. therefore, when placing an order according to api 5l, in addition to the usual indicators such as specification and steel grade, the contract must also indicate the product specification level, namely, psl1 or psl2.

psl2 is superior to psl1 in chemical composition, tensile property, impact work, nondestructive testing and other indexes.

psl1 vs ps2 summary

api 5l psl2 pipe material specification