Question 1: What does X52 PSL1 in API 5L specification mean?
Answer: In API 5L specification, "X52" represents the minimum yield strength value specified for steel pipes, in ksi (1ksi = 6.895MPa), "PSL" is the abbreviation of product specification level, PSL1 is a quality grade of API 5L pipeline steel pipe, and PSL1 provides general pipeline steel pipe quality level requirements.
Question 2: Does X52 PSL1 steel pipe need to be tested for impact performance?
Answer: No. PSL1 does not require impact performance testing. In contrast, for all steel grades except X80, PSL2 requires the average value of full-size 0℃ Akv to be ≥41J in the longitudinal direction and ≥27J in the transverse direction; for X80 steel grade, the average value of full-size 0℃ Akv requires to be ≥101J in the longitudinal direction and ≥68J in the transverse direction.
Question 3: Does X52 PSL1 steel pipe need to be non-destructively tested one by one?
Answer: No. PSL1 does not require non-destructive testing, while PSL2 should be non-destructively tested one by one.
Question 4: What are the requirements for raw materials in the production of X52 PSL1 steel pipe?
Answer: Different steel grades have different requirements for raw materials under the API 5L standard. Although there is no direct content about the raw material requirements of X52 PSL1, in general, the steel grades of steel pipes are different, and the higher the requirements for raw materials and production, the carbon equivalent between different steel grades is strictly controlled.
Question 5: When ordering X52 PSL1 steel pipes according to API 5L specifications, what needs to be noted in the contract?
Answer: When ordering according to API 5L, in addition to the usual indicators such as specifications and steel grades, the terms in the contract must also indicate the product specification level, that is, it must be clear whether it is PSL1 or PSL2
