Steel pipe hardness is an important indicator to measure quality of steel pipe. To measure the hardness of the steel pipe is generally used three Brinell, Rockwell, Vickers hardness index.

Undersea oil (gas) pipeline is a major component of the offshore oil (gas) field development and production system. It is continuously supplying a large number of oil (gas) the fastest, the safest and most economical and reliable mode of transport. Linked by submarine pipeline offshore oil (gas) can be field production gathering and storage systems, also linked to the offshore oil (gas) fields and onshore oil industrial systems.

Rejected pipe which cannot be classified as a prime product because of some physical or chemical defect is sold by the mills to steel pipe distributors, distributors of steel products, fabricators, and consumers.

Double-sided submerged arc spiral steel pipe is that arc method is welding under flux layer, and formed is that the heat generated by the burning of the arc between the wire and flux in the flux layer and melting of the wire solder and base metal.As for the following reasons it is widely used in the production of large diameter steel pipe

Pipeline is put oil,gas,water out of the ground, transported to the oil and gas industry enterprises through the line pipe including seamless pipe and welded steel pipe.

UV paint is the abbreviation of Ultraviolet Curing Paint, UV-curable paint, also called photoinitiated coating, light-curable coatings. Named to the film-forming material with PU, PE, NC paint different the UV lacquer paint curing named.

Pipeline transport as rail, road, maritime, civil aviation and five long-distance pipeline transport industry, one of the national economy plays an important role. Its transmission medium to common petroleum, natural gas, in addition to industrial gases such as oxygen, CO2, ethylene, ammonia, pulp, coal slurry and other media. Currently pipeline network must be set up by welding, in order to ensure the quality of welding pipe joints, only local conditions to select the appropriate welding process and appropriate equipment to meet project quality requirements, and also to improve engineering efficiency.

Differed from welded steel pipe, seamless steel pipe needs more attention. Thanks to a large number of properties of seamless steel pipe, it is widely in different kinds of industries, such as construction, machining, electricity and wind power plant.

Pipeline in logistics transportaion bears almost all gases and most fluid transport of goods. Different transport object, which can be divided into the pipeline transportation of natural gas pipelines and solid slurry pipeline transportation of three.

Double Submerged Arc Welded (DSAW) steel pipe is available in straight and spiral welded formats and used in a variety of applications.

Industrial pipe is a broad category of fluid and solid transport hardware used in many applications and industries. Usually cylindrical, pipe and rigid tube is used in process, energy, construction, and many civil infrastructure applications. Industrial pipes and rigid tubes are manufactured from a wide variety of materials for the transport of an equally wide variety of solids and fluids. Industrial pipe construction and material specifications are application-dependent; user consultation with pipe suppliers is typical for optimization of pipe selection.

The quality of the detection of the high frequency steel pipe is particularly important in the production process due to its high efficiency.