API 5L X56 Pipes is made out of carbon steel that has higher qualities to transport oil, gas and water in long range pipes lines. The American Petroleum Institute specification covers seamless and welded pipes for use in these particular applications.

API 5L X56 Pipes
L390 Pipes Grade X56 Pipes

Hi-tech Metal & Tubes is a manufacturer and supplier of the pipes in different grades and specifications such as the API 5L X56m. All 5L specifications have two product specification levels, namely the PSL1 and the PSL2. The X56 PSL2 is preferred for higher standard requiring applications over the psl1. The API 5L X56m PSL2 pipes have a minimum yield strength of 56Ksi and they are great in applications with high pressure as well. The lower grades are used mostly compared to the API 5L Grade X 56 Pipes because of the pricing and capacities. But where there is a need for higher mechanical properties such as the yield strength and the tensile strength, higher grades such as the L390 Pipes and X56 are required. Our X56 Steel Pipes products are trusted by our customers and we supply to a larger customer base. We also produce the X56 Grade Casing for different applications as well. Please contact us with your inquiries or for any details on our products.


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Manufacturers deliver API 5L X56 Pipe by extruding billet to a particular length and welded pipe by jointing and welding the crease of Strip or coil. The cost of the consistent pipe is 20% higher than a welded pipe no matter it is ERW or EFW. For drilling seamless pipe is continuously way better.


Composition Standard of API 5L X56 Pipes

Grade Composition, %
C max Mn max P S max V max Nb max Ti max
min max
B 0.28 1.2 - 0.03 0.03 c.d c,d d
X56 0.28 1.4 - 0.03 0.03 d d d

Standard Specifications of API 5L X56 PSL2

X52 Seamless Pipes 1/2 Inch NB To 60 inch NB
L360 Pipe SAW 16 Inch NB To 100 Inch NB
Gr X52 ERW 1/2 Inch NB To 24 Inch NB
Grade B X52 LSAW / DSAW 16 Inch TO 54 Inch Outer diameter (8 MM TO 50 MM Thick)
API 5L X52m Pressure Rating 52,200 Psi
Pipes Length 6 to 12 meters
Wall Thickness of API 5L X52 Sch 80 Schedule 10, 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS DIN, JIS
PSL Level
  • PSL1
  • PSL2

Dimensiosn Chart of Grade X56 Pipes

Seamless Pipes size range 2 Inch to 28 Inch
Welded Pipes size range (LSAW) 80 Inch

L390 Pipes Mechanical Composition

API 5L X56 PSL 1 Mechanical Properties
Grade Yield Strength Mpa Tensile Strength Mpa Elongation
B 245 415 c
X56 390 490 c