Non-destructive testing (NDT) is a method to detect and evaluate the internal structure, material properties and defects of the object under test without damaging its integrity.

Boiler tube refers to the steel with two ends open and hollow section, and its length is larger than the surrounding.

ASTM-A36 is an American standard carbon structure steel plate, its implementation standard is ASTM specific technical conditions.

There are many factors to consider when selecting the best pipeline for oil and gas applications, the most important of which is the choice of pipeline material.

In building construction and structural engineering, steel pipe is often used as a key link such as support, load-bearing and fluid transportation because of its good mechanical properties and diversified applications.

Most parts undergo heat treatment when they are manufactured.

Pressure pipeline refers to the use of a certain pressure, used to transport liquid or gas tubular equipment.

As an important energy transmission system, the safe operation of natural gas pipeline is directly related to the security of economy and personnel. Natural gas pipeline faces many risks during construction and operation, so it is very important to take effective preventive measures.

Hydrogen embrittlement refers to the fact that after the steel absorbs and diffuses hydrogen atoms, the lattice structure is embrittlement, resulting in the material losing toughness, the tensile strength and ductility are significantly reduced, and the brittle fracture is more likely to occur.

Cold-drawn seamless pipe is a kind of high-precision steel pipe formed by cold-drawn processing, because the inner wall and outer wall of the cold-drawn seamless pipe have no oxide layer, can withstand high pressure without leakage, high precision, high finish, cold bending without deformation, flaring, flattening without cracks, etc., so it is mainly used for the production of pneumatic or hydraulic components.

Tempering is a heat treatment process in which a high-pressure boiler tube quenched into martensite is heated to a temperature below the critical point, held for an appropriate time, and then cooled to room temperature.

Seamless steel pipe is a kind of steel pipe manufactured by punching, rolling and drawing molding processes, and there is no weld on the surface, nor any welded joint.

Seamless steel pipe is an indispensable material for urban construction and pipeline transportation, with light weight, high temperature resistance, impact resistance and other performance characteristics.

API 5L Seamless pipe is a seamless steel pipe manufactured according to API 5L (American Petroleum Institute 5L specification), which is mainly used in oil, gas and other fluid transportation pipeline systems.

The seamless steel pipe is mostly produced by hot rolling and cold drawing process. In the cold drawing process, the seamless steel pipe often needs to be annealed.