API 5L line pipe commonly used materials include steel grades from L245, L360 up to X70 series, with outer diameter ranging from 60 to 630 mm and wall thickness specifications from 1.53 to 40 mm.
The production process employs micro-alloying heat treatment technology, with high-grade products enhancing performance by adjusting carbon equivalent and optimizing heat treatment parameters. Annealing processes include full annealing, spheroidizing annealing, and stress relief annealing to eliminate residual stress and stabilize material microstructure. Tempering treatment reduces quenching brittleness and improves mechanical properties.
With advancements in welding technology, large-diameter welded pipes have become mainstream due to cost advantages, while seamless pipes are relatively limited in application.
Grades: API 5L Grade B, X42, X52, X56, X60, X65, X70, X80 Q/M/N/QS/MS/NS
Product Specification Level: PSL1, PSL2, Sour Service, Onshore and Offshore
Steel Pipe Dimensions OD: 1/2" to 2", 3", 4", 6", 8", 10", 12", 16 inch, 18 inch, 20 inch, up to 40 inch.
Thickness Schedule: SCH 10. SCH 20, SCH 40, SCH STD, SCH 80, SCH XS, to SCH 160, SCH XXS
Manufacturing Types: Seamless, Welded (ERW, LSAW, DSAW, SSAW)
Ends Type: Beveled ends, Plain ends
Length Range: 20 FT (6 meter), 40FT (12 meter)or customized
Protection Caps in plastic or iron
Surface Treatment: Natural, Varnished, Black painting, FBE and 3PE (3LPE), 3PP, CRA Clad or Lined
Suffix Letter means
Suffix letter for API 5L Pipe means the delivery condition which these for PSL2 pipe and belong to the steel grade, normally we see the pipe description with API 5L X60QS, or API 5L X42N, X52Q, these letters means:
Letter R: As rolled.
Letter N: Normalizing rolled, Normalized formed, Normalized.
Letter Q: Tempered and quenched
Letter M: Thermomechanical rolled or formed.
Letter S: Comes with NS, QS, MS, means PSL2 for Sour Services
Chemical Composition of API 5L PSL1 pipe
Chemical composition for PSL 1 pipe with t ≤ 25.0 mm (0.984 in)
API 5L Pipe PSL2 chemicals
Mechanical properties
Yield Strength and Tensile Strength for API 5L PSL1 Line Pipe
For PSL2 pipe
Package: In bundles as per API standard ,export standard package.
Payment terms:
A) T/T: 30% T/T advance, 70% balance copy of B/L within 3 days
B) L/C: 100% Irrevocable documentary L/C at sight
C) Western Union
D) PayPaL
E) D/P, D/A more flexible payment terms for regular clients.
Trade terms: FOB/CFR/CIF
Providing capability: 30000 pieces/ Year
Delivery time : Within 7-15 days after receiving the deposit.
Loading port: Tianjin, China
