API X70 steel pipe

API X70 steel pipe application for the oil and gas industry, oxygen, water, oil pipes.

API X70 steel pipe

American Petroleum Institute API (American Petroleum Institute) for short, 5L refers to the API standard API Spec 5L "line pipe", X70 refers to the steel grade, divided into PSL1 and PSL2, the required minimum yield strength 70300psi, The minimum ultimate tensile strength of 82700psi.

Sunny Steel is specialized in supplying API 5L steel pipe in X70.
For more information of API 5L X70 steel pipe, please check them in following:

Chemical composition of API 5L X70
 C(%)  Si(%)  Mn(%)  P(%)  S(%)  Nb(%)
 ≤0.16  ≤0.45  ≤1.70  ≤0.020  ≤0.020  ≤0.06

Mechanical properties of API 5L X70
 Tensile strength (Mpa)  Yield strength (Mpa) Yield Ratio  Elongation (%)
485-605  ≥0.90 18  ≥40

API 5L X70 steel pipe Surface: Black painted,PE coated,Galvanized,color coated,etc

API 5L X70 steel pipe Delivery States:Heat treatment facilities for hot-rolled,controlled rolling, normalizing, annealing, tempering, quenching, normalizing plus tempering, quenching and tempering, and other delivery states are available as customers’ requirement.

API 5L X70 steel pipe Tests:HIC, SSC, SPWHT, Macrostructure, detection of defects,Hardness and DWTT test and en10204/3.1 certificate are also available.







Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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