Steel Line Pipe VS Pipeline

Posted by Demaris on January 22nd, 2021

Linepipe is a kind of steel pipeline made use of for petroleum, gas, oil, and water transport. The majority of the steel pipes are utilized in areas with severe all-natural problems, such as polar regions, ice areas, deserts as well as oceans, etc. The lines are lengthy as well as hard to keep, which asked for strict quality needs as well as specifications. The pipe steel includes smooth and also bonded steel tubes according to its production approaches and also made of high stamina carbon steel., which can be laid in cool, high-sulfur areas or under the sea.

The Benefits Of Steel Linepipe

This linepipe typically has great mechanical homes such as wall surface density, high toughness, high durability and wear resistance, however likewise need to be big diameter, excellent weldability, low-temperature resistance, corrosion resistance (CARBON DIOXIDE), seawater resistance and HIC, SSCC performance.

High strength

Steel pipe not just needs high tensile toughness and also yield toughness but additionally gives a distorting ratio of 0.85 ~ 0.93.

High influence durability

High impact durability avoids fracturing.

Low ductile-brittle shift temperature level

Harsh regional and weather conditions call for the pipeline steel to have a sufficiently low ductile and also breakable shift temperature level. The shear area of DWTT (decline hammer tear examination) has become the primary control index to avoid the weak failure of the pipe, and also it is typically needed that the crack shear location of the sample should be ≥ 85% at the most affordable operating temperature level.

Superb hydrogen-induced breaking (HIC) and also sulfide tension rust cracking (SSCC) resistance

Great welding efficiency

The Requirements For Steel Pipeline

Presently, the major technical criteria for oil and gas communicating steel linepipes are API SPEC 5L, DNV-OS-F101, ISO 3183 and also GB/T 9711, etc

. API 5L is an extensively made use of requirements created by the major oil institute, which is only for steel pipe items, excluding the style, option or installment of pipelines.

DNV-OS-F101 (subsea pipe system) is a spec established by Norske veritas particularly for subsea pipes. It covers a large range of materials, including pipe layout, products, production, installment, screening, operation, upkeep, and so on, which is usually more stringent than API 5L.

ISO 3183 is the global company for standardization created on the oil and also gas transport steel pipeline shipment conditions, the requirement is thorough, comprehensive however does not include the pipe style, installation, etc

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Joined: January 22nd, 2021
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