Knowledge points and influencing factors that must be paid attention to for seamless steel pipes

Seamless steel pipe production method
1. What are the basic processes for producing seamless steel pipes?
① Blank preparation ② Pipe blank heating ③ Perforation ④ Pipe rolling ⑤ Sizing and reducing diameter ⑥ Finishing, inspection and packaging for storage.
2. What are the production units for hot-rolled seamless steel pipes?
Continuous rolling, cross rolling
How are steel pipes classified according to their uses?
Transmission pipe (GB/T 8163): oil and natural gas transmission pipe, representative materials are No. 20 steel, Q345 alloy steel, etc.
Structural pipe (GB/T 8162): Representative materials include carbon steel, No. 20, and No. 45 steel; alloy steel Q345, 20Cr,
40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
At present, seamless steel pipes are mainly used as oil pipes, boiler pipes, heat exchangers, bearing pipes and some high-pressure transportation pipelines.
What factors affect the price of steel pipes?
Transportation method, theoretical weight/actual weight, packaging, delivery date, payment method, market price, processing technology, product shortage in the market, old customers/new customers, customer scale, communication experience, environmental protection, national policies, market demand, Material, brand, inspection, quality, qualification, steel mill policy, exchange rate, shipping terms, international situation

Post time: Jan-30-2024