DURLMARK – BLOG

Problems about Surface Treatment for Stainless Steel Pipes

By Durlmark Industrial | Jul 26,2017

Generally, in terms of the surface treatment for stainless steel pipes, manufacturers have three methods, blenching treatment, polishing treatment and coloring treatment.

Four Types of Welded Steel Pipe

By Durlmark Industrial | Jul 26,2017

As the development of pipe industry, pipe and pipe fittings, including pipe coupling, pipe tee, pipe elbow are more and more widely use in industrial area.

Differences between Flat Weld Flange and Butt Weld Flange

By Durlmark Industrial | Jul 26,2017

Because of high production efficiency, easy operation and reasonable price, flat weld flange and butt weld flange are most common weld flanges.

Specified Bellow Globe Valves Used for Chlorine

By Durlmark Industrial | Jul 26,2017

In petroleum, chemical engineering, pharmacy, fertilizer, power and other industries, chlorine is usually used as oxidizing agent for its excellent oxidability.

New Development of Anti-Corrosion Material for Pipes

By Durlmark Industrial | Jul 25,2017

Currently, the worldwide manufactures are attach great importance to study and research of anti-corrosion to pipes, and many new materials and technologies are emerging.

Application of Welded Pipe

By Durlmark Industrial | Jul 25,2017

Where can welded steel pipe and pipe bend be used? Here are some of them:

Production and Processing of Flat Weld Flange

By Durlmark Industrial | Jul 25,2017

Flat welded flange has certain technical requirements and parameters in its production and usage, so it must be manufactured in accordance with certain production and processing methods.

Problems of Stainless Steel Butterfly Valve

By Durlmark Industrial | Jul 25,2017

At present, as a kind of component to cut off or control flow rate in pipeline system, stainless steel butterfly valve has been widely applied in petroleum, chemical industry,

Distortion Control When Quenching the OCTG Pipes

By Durlmark Industrial | Jul 24,2017

There are several methods of quenching the OCTG pipes, dipping, axial injection, laminar jet and laminar jet combined with axial injection.

The Identification of Fake Thick-Walled Seamless Steel Pipe

By Durlmark Industrial | Jul 24,2017

Here Durlmark Pipe Fitting offers six tips for the identification method of fake thick-walled seamless pipe.