seamless steel pipe
Product Features:
Seamless steel pipes are made from whole round steel through perforation process, with no welds throughout the entire pipe body. According to the production process, it can be divided into categories such as hot rolling, cold rolling, cold drawing, extrusion, and pipe jacking; From the perspective of cross-sectional morphology, there are mainly two categories: circular tubes and irregular tubes, among which irregular tubes include various styles such as square, elliptical, triangular, hexagonal, star shaped, winged tubes, etc. Its diameter range spans a large distance, with a maximum of 900mm and a minimum of only 4mm. It can also be divided into thick walled pipes and thin-walled pipes based on wall thickness. This pipe has a wide range of application scenarios and is often used in petroleum geological drilling, petrochemical cracking, boiler and bearing manufacturing, as well as high-precision structural components in the automotive, agricultural machinery, and aviation fields.
Specifications and Dimensions
Common standards:
①GB/T2102-2018: Requirements for Acceptance, Packaging, Marking and Quality Certificate of Steel Pipes
②GB/T17395-2008: Specification for dimensions, shape, weight and deviation of seamless steel pipes
③GB/T5310-2018: Seamless steel pipes for high-pressure boilers
④GB/T9948-2018: Seamless steel pipes for petroleum cracking
⑤GB/T6479-2018: Seamless steel pipes for high-pressure fertilizer equipment
⑥GB/T18248-2018: Seamless steel pipes for gas cylinders
Key advantages
- ✅ No weld weaknessUniform stress distribution,Pressure bearing 20-30% higher than welded pipe。
- ✅ Excellent mechanical propertiesBetter strength, toughness, and fatigue resistance.
- ✅ High dimensional accuracyOuter diameter tolerance ± 0.2% D, wall thickness error ≤ 5%.
- ✅ Excellent sealing performanceNo leakage risk, suitable for high-pressure fluid transportation.
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