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November 29, 2018
45deg 90deg 180deg butt weld elbows

Butt weld elbows are bent by steel pipes. The function of butt weld elbows in a piping system is to change the direction. There are di

October 17, 2018
raised face WN flange and flat face WN flange

According to different facings, weld neck flange can be divided into raised face WN flange and flat face WN flange. It 

October 17, 2018
Carbon steel & Alloy steel elbows

Alloy steel elbows ar

September 13, 2018
butt weld concentric reducers and eccentric reducers

Reducers are a kind of butt weld fittings that will be used for reducing piping size. In the piping system, they will be connected 2 p

September 13, 2018
The manufacture process of steel pipes

Steel pipes are made by two different types, including seamless steel pipes and welded pipes. 

September 06, 2018
Socket weld fittings

Socket weld fittings belong to forged fittings whose pressure is very high, such as 3000LB,6000LB,9000LB. Normally the size for SW fit

September 06, 2018
Seamless elbows and welded elbows

Cangzhou Hengjia Pipeline Co.,Ltd is able to manufacture pipe elb

August 31, 2018
The introduction for concentric reducer

Everyone knows concentric reducer is also a kind of butt weld pipe fittings. Besides concentric type, there are eccentric reducers. Th

August 31, 2018
butt weld pipe fittings with carbon steel and stainless steel

Butt welded pipe fittings are offered in a variety of types, sizes and materials. 

August 30, 2018
What's the difference between ANSI B16.5 flange & ASME B16.5 flange?

What's the difference between ANSI B16.5 flange & ASME B16.5 flange? The answer is there is no difference.  First of all, &nb

August 28, 2018
the difference between long radius elbows and short radius elbows

Long radius elbows and short radius elbows will be connected with pipes, which can change the direction. These 2 types of elbows can b

August 23, 2018
The introduction about weld neck forged flange

Hengjia Pipeline can manufacture weld neck pipe flanges in many steel material grades, including carbon steel weld neck pipe flanges,

August 23, 2018
socket weld fittings and threaded fittings

Besides butt weld fittings, socket weld fittings and threaded fittings are also our product range. Both SW & THD fittings are forg

August 22, 2018
Butt weld bend with tangent length

Our factory provide butt weld bends that are fabricated using different grades of steel, including carbon steel, alloy steel and 

August 22, 2018
ANSI DIN pipe flange

For forged flanges, there are not only many materials and types, but also various manufacture standards, such as ANSI, DIN etc.

August 17, 2018
The classification and usage of carbon steel elbow

According to the radius of curvature, c

August 17, 2018
Different forms of flanges and sealings

Pipe flange can be divided into seven basic types, including weld neck flange, slip on flange, threaded flange, socket welding flange,

August 15, 2018
flange American standard number

There are many differences in flange size and standards used by American Standard Valves and National Standard Valves. 

August 15, 2018
Some reasons for corrosion of stainless steel welded pipes

For stainless steel welded pipes, there are some reasons for corrosion. Pls check below for them

August 13, 2018
The introduction of spiral welded steel pipes

Spiral welded steel pipe is a kind of steel pipe which is welded and formed by a st

August 13, 2018
Do you know mechanical properties of alloy steel pipes?

Do you know mechanical properties of alloy steel pipes? Let's get to know about it together.

August 11, 2018
National standard flange

There are many different standards of forged flanges, for example, GB is the national standard. 

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