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Good Quality Line pipe

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Dynoland International Trading Co., Ltd.

Good Quality Line pipe

Place of Origin : Shanghai

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Line pipe

API 5L Line pipe is a type of steel pipe that is manufactured from high strength carbon steel. It is typically made according to the metallurgical specifications developed by the American Petroleum Institute (API). This product can be used to build pipelines that transport a variety of resources including natural gas, oil, petroleum and water to petroleum and natural gas industry. Line pipe is available in a variety of diameters ranging from 2 inches to 48 inches. It includes seamless and welded carbon steel or stainless steel piping. Because this steel pipe needs to withstand high pressures, there are important tests to ensure our pipes meet all the requirements of steel chemistry. Dynoland line pipe will ensure safe and reliable pipeline service.


· The pipes are mainly made of B, X42, X46, X56, X65, X70, X80 and other grade steel.

· Pipe ends include plain end, thread end and female end of pipe.

· The connection type of this steel pipe includes end welding, coupling connection, socket connection.

· Executive standard of our line pipes is API 5L.

· The size and diameter can vary based on the amount of gas or liquid that a pipe is intended to carry as well as the pressures that a steel pipe must withstand.

· The thickness requirements are determined by the maximum operating pressure required for a pipeline. Following proper safety regulations when selecting and installing line pipes, we will ensure proper pipeline operation and prevent dangerous or hazardous situations.

Mechanical Property

Chemical Constituent:

t of sc��tr���>�ffectively prevent thread gluing, improve the wear resistance of thread, and thereby enhance the service life of the API 5DP drill pipe. Thickness of the nitration layer is generally from 0.2 mm to 0.3 mm. Too large thickness is easy to cause cracking flaws. Too small thickness will result in poor thread gluing resistance. Integrated drill pipes should do phosphate treatment with much smaller thickness, rather than nitriding treatment.

• 4) Joint thread should be processed by the thread turning tool on the CNC lathe. We make efforts to improve the thread surface quality, reduce the surface roughness (Ra ≤ 1.6μm), improve the degree of finish and reduce stress concentration. These measures can ensure the interchangeability of API 5DP drill pipes. The standoff of joint threads should be controlled in a reasonable range so as to ensure a good drill thread engagement.

Performance Advantage

• Our drill pipes' body has high tensile strength, good bending performance and good toughness. The body uses carbon alloy seamless steel pipe. Alloying elements should contain more Cr, Mo and other elements to improve the tensile strength and impact toughness, and contain Mn, Si and other elements to improve the elasticity of the material (i.e. bending performance). Mechanical properties of API 5DP drill pipes are as follows:

Drill Pipe

Mechanical Properties of API 5DP Drill Pipes

·Other Advantages

· 1) Our drill pipes are manufactured in accordance with API 5DP standards. It has low levels of P and S chemical compositions (containing P with the amount of less than or equal to 0.015 and with less than or equal to 0.003 S).

· 2) The body of Our API 5DP drill pipe has better thickness evenness, fewer rolling defects and higher finished product rate.

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Line pipe


Line pipe


Line pipe

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