API 5L line pipes can be divided into two grades:API 5L PSL1 and API 5L PSL2.PSL is short for Product Specification Levels.Both levels of API 5L line pipes contain seamless steel pipe and welded steel pipe and used of a pipeline in the transportation of pe ...

For PSL2 pipe there is a limit on Maximum Yield & Ultimate Tensile Strength whereas for PSL1 pipe meeting the minimum requirements are sufficient.The second requirement that is mandatory for PSL2 pipe is fracture toughness which is not required for the ...

API 5L PSL1 and PSL2 steel pipe contain seamless steel pipe and welded steel pipe,three elements change when requirements change from PSL1 to PSL2: First is Carbon. Maximum Carbon for Seamless PSL1 pipe is 0.28% for the grade B & higher. For all grade ...

The American Petroleum Institute specification API 5L line pipe covers seamless and welded steel line pipe.This is steel pipe for pipeline transportation systems in the petroleum and natural gas industries.API 5L is suitable for conveying gas,water,and oil ...

What is a seamless steel pipe? A steel pipe made of a single piece of metal with no seams on its surface is called a seamless steel pipe.According to the production method,the seamless pipe is divided into hot rolled pipe,cold rolled pipe,cold drawn pipe,e ...

What is hot galvanized and cold galvanized? Hot-dip galvanized is a method in which steel components are immersed in molten zinc to obtain a metal coating.The workpiece is degreased,pickled,dipped,dried and immersed in molten zinc. Cold galvanized 90 degre ...

Hot rolling and cold rolling are the forming processes of section steel or steel plate, which have great influence on the structure and properties of steel.Cold rolling is done below the recrystallization temperature,while hot rolling is done above the rec ...

Butt welding and socket welding are forms of welding connection between flange and pipeline.Socket welding usually inserts pipeline into flange for welding.Butt welding is a butt welding flange.Pipeline and butt joint are welded.Therefore,butt welding flan ...

Steel pipe has been widely applied in fluids transporting systems,oil and gas industries,thermal and high pressure services. As pipe emphasize the function of transporting media which under pressure to another place,so pipe always connect with various fitt ...

As we know,steel pipe and steel plate mechanical performances depends on two aspects:One is the heat treatment type;Another one also the most important factor is the chemical elements effect to these steel material. Common chemical elements in steel is C,M ...

Channel steel is a section of the groove shape of the long strip of steel,belongs to the construction and mechanical carbon structural steel,is a complex section of the steel,its cross-sectional shape for the groove shape.Channel steel is mainly used in bu ...

Today,Hebei Haihao Group will give you a detailed description of some knowledge about the air tightness testing methods of ductile iron pipes. The traditional methods for detecting leakage of ductile iron pipes are bubble method and smearing method.The air ...

Small diameter  seamless steel pipe can also be divided into:seamless small-caliber steel pipe and straight seam(also known as welding) small-caliber seamless steel pipe,generally in the pipe diameter below 89mm,more than 4 mm,can be collectively referred ...

Pipe has been widely applied in fluids transporting systems,oil and gas industries,thermal and high pressure services. A106 steel pipes As pipe emphasize the function of transporting media which under pressure to another place,so pipe always connect with v ...

The South African client’s order has been completed today and is being prepared for shipment.The piping products are used for the construction of a large petrochemical plant project in South Africe,which including a large number of flanges and pipe f ...

Seam welding is a welding technique in which two similar or dissimilar metals are connected by electric current and a nugget formation is formed in the process.Mostly,these nuggets are formed in the form of butt or the overlapping welding components.Seam w ...

Circumferential weld also called girth weld,is the welding of all kinds of circular and circumferential welds, and the weld formed by welding is a closed circumferential weld. DN1050 large diameter custom bend with seam welding and girth welding The girth ...

A hydrostatic test is a way in which pressure vessels such as pipelines,plumbing, gas cylinders,boilers and fuel tanks can be tested for strength and leaks.The test involves filling the vessel or pipe system with a liquid,usually water,which may be dyed to ...

What is radiographic testing(RT)? Radiographic testing(RT or X-ray or Gamma ray)is a non-destructive testing (NDT) method that involves the use of either x-rays or gamma rays to view the internal structure of a component.Radiographic testing is often used ...

Fluorophore penetrant inspection and pigmentation penetration inspection are both penetration testing(PT).They all include basic steps:surface preparation,apply penetrant,remove penetrant,application of developer,inspection and clean surface,but they are n ...