Industry Information

Update November 30, 2018

The difference between seamless and ERW pipes

On the surface of seamless pipe, there are no welding or joints and seamless pipes are made from solid round billets. The seamless pipe is finished to dimensional and wall thickness specifications in...

Update 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 different angles, such as 45deg elbows, 90deg elbows, 180deg...

Update 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 is circumferentially welded into the system at its neck which means that the...

Update October 17, 2018

Carbon steel & Alloy steel elbows

Alloy steel elbows are widely used in the installation of pipelines for changing the direction of material flow. Made from the best grades of alloy steel, these elbows have excellent strength to...

Update 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 pieces of pipes with different diameters. Main types are...

Update September 13, 2018

The strong point for seamless steel pipes

Compared with welded pipe, what is the strong point for seamless steel pipes? And what disadvantage do weld pipes have? 1.The greatest advantage of seamless steel pipes is their increased ability to...

Update September 13, 2018

The manufacture process of steel pipes

Steel pipes are made by two different types, including seamless steel pipes and welded pipes. The manufacturing process of steel pipes involves three steps, First, raw steel is converted into a more...

Update 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 fittings are very small. For different type of pipe fittings, socket...

Update September 06, 2018

Seamless elbows and welded elbows

Cangzhou Hengjia Pipeline Co.,Ltd is able to manufacture pipe elbows with seamless and welded according to current standards. For example, ASME, DIN, GOST, GB, EN etc. Do you require additional...

Update 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. The difference is that if the center is on the same line....