DIN 2391 is a German industrial standard that regulates the technical requirements and manufacturing processes of seamless precision steel pipes. With its high precision, good surface quality and excellent mechanical properties, this kind of steel pipe is widely used in automotive, machinery manufacturing, hydraulic system and other fields.

Because of its high strength, pressure resistance, corrosion resistance and good processing properties, seamless steel pipe has become an indispensable material in many industries.

ASTM A519 is an international standard for carbon and alloy steel mechanical pipes used to manufacture seamless cold-drawn or hot-rolled mechanical pipes. The standard covers tubes for machining, structural and pressure applications where high strength, corrosion resistance and dimensional accuracy are required.

Straight seam steel pipe is a kind of steel pipe formed by rolling steel strip or steel plate into a tube at a certain Angle, and then welding the two ends through the linear welding technology. Straight steel pipe is widely used in oil, natural gas, electric power, chemical industry and other fields, especially suitable for high pressure, high temperature conditions of the pipeline.

API 5CT H40 casing is a class commonly used in the oil and gas industry and is designed to ensure well integrity and operational safety. Selecting the right casing grade for the application is critical to the performance and life of the well.

As a kind of high-strength, pressure-resistant and corrosion-resistant pipe, seamless pipe is widely used in oil, natural gas, chemical industry, boiler, automobile, construction and other fields.

FBE coating (single layer fused epoxy coating) is a kind of high-performance anticorrosive coating with special epoxy powder coating as film forming material, which is widely used in the field of pipeline and structure protection. The coating is composed of solid epoxy resin, curing agent and a variety of additives, which is a thermosetting coating.

The reason why stainless steel pipes can be "rust-proof" is mainly because of the special chemical composition and structure of the material itself. Although stainless steel pipes may corrod in some extreme environments, in the vast majority of cases, it can maintain a smooth, rust-free surface.

In modern cities and construction projects, the selection of water supply piping materials is a key factor to determine the operating efficiency and service life of the water supply system.

The quality control of stainless steel welded steel pipe is an important link to ensure the welding performance and product service life. In the entire welding production process, the inspection of raw materials and the quality of welding operations are crucial.

Steel piles are a type of construction material used in foundation engineering for load-bearing or protective purposes. Due to their high strength, good durability, and convenient construction, they are widely applied in fields such as buildings, bridges, and docks.

Welded steel pipe is a kind of steel that is welded into tubes by steel plate or steel strip. It is widely used in oil, gas, building structure, water supply and machinery manufacturing.