Seamless steel pipe production line five common type cooling bed

September 30th, 2017|

Single chain cooling bed Single chain cooling bed multi-use climbing structure. Cooling bed by the forward and fixed rail transport chain composed of a set of transmission. Pipe placed between two grasping dial the forward [...]

Difference between of seamless steel annealing, normalizing, tempering, quenching

September 29th, 2017|

annealing The steel is heated to a certain temperature and at that temperature, and then slowly cooled to room temperature. Annealing has fully annealed, spheroidized annealing, stress relief annealing several. Normalizing The steel is heated [...]

Why do seamless steel pipe flaring, flattening?

September 28th, 2017|

Seamless steel pipe needs to be done flaring, flattening purposes? Many users in certain process applications need to end seamless pipe expansion port to a certain size, and then connect to other sites, such as [...]

Q345B seamless steel pipe welded how to detect whether the quality standards

September 26th, 2017|

1. After welding, the weld should be hot hardness testing, qualification standards for the hardness of the weld heat does not exceed the hardness of the base material itself 100. 2, when the weld internal [...]

Standard Classification of spiral steel pipe

September 25th, 2017|

Pressure fluid transport with spiral submerged arc welded pipe SY5036-2000, is mainly used to transport oil, natural gas pipelines;  Pressure fluid transport with spiral seam high frequency welded steel pipe SY5038-2000, high frequency lap welding [...]

What is the plastic pipe

September 22nd, 2017|

Seamless steel pipe corrosion due to corrosion was characteristic in the steel industry in recent years, there is a plastic composite pipe, plastic pipe, also known in some industry-specific work environment, it is seamless steel [...]

The meaning of seamless steel pipe products De, DN, D, d, Φ of

September 21st, 2017|

In general, the diameter can be divided into seamless steel pipe outside diameter (De), the inner diameter (D), nominal diameter (DN). DN is Nominal diameter, refers to the nominal diameter seamless steel pipe, is the [...]

How to distinguish between American Standard and GB Q345B seamless steel pipe difference?

September 18th, 2017|

Q345B seamless steel pipe is the old national standard GB / T6479-1988 high-strength low-alloy structural steel grades, the new national standard GB / T6479-2000 seamless steel grades for the Q345 (Q345 have five quality grades, [...]

Chemical equipment seamless steel pipe

September 15th, 2017|

Chemical equipment seamless steel pipe: 1. Mainly used for conveying high temperature and high pressure fluid pipe fertilizer equipment. Representative materials for 20,16Mn, 12C rMo, and so on. 2. For the operating temperature of -40 [...]

Thick-walled seamless identification method

September 12th, 2017|

1.shoddy walled seamless steel pipe prone to folding. 2.Thick-walled seamless look shoddy often pitting phenomenon. 3.shoddy thick-walled seamless surface is easy to produce scarring. 4.The shoddy material surface is easy to produce cracks because its [...]