DURLMARK – BLOG

Features of Seamless Steel Pipe and Welded Steel Pipe

By Durlmark Industrial | Jul 18,2017

Seamless steel pipe is a kind of strip steel with hollow section and no seams around. Steel pipe has a hollow section

The Specific Classification Form of Pipe Fittings Products

By Durlmark Industrial | Jul 18,2017

Here are pipe fitting classifications according to features:

Influential Factors of Flange Sealing

By Durlmark Industrial | Jul 18,2017

Bolt pretightening force is an important factor affecting flange sealing. Pretightening force is used to press gaskets so as to meet initial sealing requirement.

Brief Introduction about Ceramic Valves

By Durlmark Industrial | Jul 18,2017

Metal valves have been widely used in many industries for hundreds of years. Thought their structure and material have been improved,

Transport and Process Knowledge of Stainless Steel Pipes

By Durlmark Industrial | Jul 17,2017

Stainless steel pipe fitting materials can't contact with other metals directly when lifting,non-metallic materials such as wood or rubber sheet should be padded.

Elbow Definition, Categories and Technique Requirements

By Durlmark Industrial | Jul 17,2017

In the pipeline system, elbow is a pipefitting applied to change the direction of pipeline.

Measurement of Stainless Steel Flanges

By Durlmark Industrial | Jul 17,2017

Before measurement, the first thing is to draw a rough draft of various jointed pipe flanges and number them consecutively in accordance with the position of flanges

Some Notes of Packing

By Durlmark Industrial | Jul 17,2017

1. Packing filler should be cut with a 45-degree incision and each incision shifted 180 degrees when installation.

Notes in The Process of Spiral Steel Pipe Welding

By Durlmark Industrial | Jul 16,2017

Production process of spiral steel pipe is complex, but it is one of the most popular steel pipes because it can be used widely.Spiral steel pipes are produced through welding process

Processing Methods of Reducing Tee

By Durlmark Industrial | Jul 16,2017

Put liftout attachment on the pipe, which includes a metal, transformer, commutator, bracket, etc.; heat the metal bar, when you use jacks and metal bar to push out,