API 5L X70 Pipes is used for oil and gas transportation inside pipelines. Water transmission is also one of the uses. There are different grades and manufacturing types of these pipes.

API 5L X70 Pipes
API 5L Gr X70 Grade X70 PSL2

The X70 PSL2 is one of the most used of the product specification levels in this specification. Hi-tech Metal & Tubes is a manufacturer and supplier of different types of steel pipe products. We also supply the Gr X70 in different levels, sizes and shapes. The yield strength is higher in this grade is higher than the lower grades. The applications include water lines, sea water processing systems, oil and gas applications, petroleum refineries and petrochemical industries. The Grade X70 PSL2 could be seamless or welded. The 5L X70 Material has phosphorus, silicon and manganese in the composition which provides a certain level of strength and corrosion resistance to the steel. Our 5L X70 Seamless Pipes are easy install on systems that are accurate. We also offer cost efficient 5L X70 Psl 1 type in the range of pipes. Our Iso 3183 L485 Pipes products are of high quality and conform to the standards. You can contact us for any further details or inquiries including pricing.


API 5L X70 Pipes is delivered from 1/2” to 4 inches and welded pipe up to 4" but the diameter of the welded pipe can be increased by hot expanding machining but these pipes are not strong in long run. so it is fitting to go for Cold-worked seamless pipe. The fetched difference is almost 15%.

API 5L X70 Pipe material specification chart

5L X70 PSL2 1/2 Inch NB To 60 inch NB
Tubo 5L Gr X70 SAW 16 Inch NB To 100 Inch NB
Grade X70 PSL2 Erw 1/2 Inch NB To 24 Inch NB
X70 Seamless Pipes Dsaw 16 Inch TO 54 Inch Outer diameter (8 MM TO 50 MM Thick)
ISO 3183 L485 Pipes Length 6 to 12 meters
X70 Pressure Rating 70400 Psi
Wall Thickness of 5L X70 Pipes Schedule 10, 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS DIN, JIS
PSL Level
  • PSL1
  • PSL2

Dimensions Schedule of API 5L X70 PSL2

Seamless Pipes size 2 to 28"
Welded Pipes size (LSAW) 80"

API 5L X70 Seamless Pipes Chemical Equation

API 5L X70 PSL 1
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
X70 0.28 1.4 0.03 0.03 f f f

Mechanical Behaviour of ISO 3183 L485 Pipes

Grade Yield Strength Tensile Strength Yield to Tensile Elongation
min. (KSI) min. (KSI) Ratio (max) %
API 5L X70 70 82 0.93 17