1, Definition and use:
Seamless steel pipe is a kind of tubular steel without welded seams, which has high strength, good toughness and corrosion resistance, and is suitable for a wide range of industrial and construction applications.
It is mainly used for transporting fluids (such as oil, natural gas, water), manufacturing mechanical structural parts, automotive parts, building structures and so on.
2, specifications and size:
The specification of seamless steel pipe is usually determined by the outer diameter (OD) and wall thickness (WT). When purchasing, you need to specify the size of the required steel pipe, for example, Φ20mm x 2mm (OD 20mm, wall thickness 2mm).
3、Material selection:
(1) Carbon steel: such as Q235, Q345, suitable for general structural parts and fluid transport.
(2) Alloy steel: such as 20#, 45#, with higher strength and toughness, suitable for machinery manufacturing.
(3) Stainless steel: such as 304, 316, strong corrosion resistance, suitable for chemical industry, food processing and other fields.
4, Quality standards:
Seamless steel pipe needs to comply with relevant national standards (such as GB/T 8162, GB/T 8163) or international standards (such as ASTM A53, A106). When purchasing, you need to confirm whether the supplier’s products meet the required standards.
5、Product characteristics:
High strength and toughness: seamless steel pipe has high tensile strength and yield strength, and can withstand large mechanical stress.
Corrosion resistance: depending on the material, seamless steel pipes have different degrees of corrosion resistance and are suitable for a variety of harsh environments.
High dimensional accuracy: Seamless steel tubes produced by cold rolling or cold drawing process have high dimensional accuracy and good surface quality, suitable for precision machining.
Weldless structure: Seamless steel pipe has no weld, reducing welding defects and leakage risks, suitable for high-pressure fluid transport.
6、Application Scene:
Construction industry: used for bridges, high-rise building structural frames, scaffolding, etc.
Machinery manufacturing: used for manufacturing automobile transmission shafts, hydraulic cylinder bodies, mechanical parts, etc.
Petrochemical industry: used for conveying oil, natural gas, chemical media, etc., suitable for high pressure, high temperature environment.
Automobile manufacturing: used in automobile chassis, transmission system and other components, reduce weight and improve strength.
Decorative engineering: used for railings, handrails, decorative columns, etc., with good aesthetics.