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35CrMo seamless steel pipe

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  • Key Technology of Seamless Steel Pipe
  • 35CrMo seamless steel pipe
Carbon Steel Seamless/Welded Fittings
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35CrMo seamless steel pipe

35CrMo seamless steel pipe specification: 6-1240×1-200mm

 

①Main production process of hot-rolled seamless steel pipe ( △ Main inspection process):

Tube blank preparation and inspection △→ tube blank heating → piercing → tube rolling → steel tube reheating → diameter setting (reduction) → heat treatment △→ finished tube straightening → finishing → inspection △ (non-destructive, physical and chemical, Taiwan inspection) → warehousing

②Main production process of cold-rolled (drawn) seamless steel pipe:

Billet preparation → pickling and lubrication → cold rolling (drawing) → heat treatment → straightening → finishing → inspection

 

35CrMo seamless steel pipe chemical composition:

Grade

Carbon (C)

Manganese (Mn)

Ni _

Silicon (Si)

Phosphorus (P)

Sulfur (S)

Chromium (Cr)

Copper (Cu)

Mo _

35CrMo

0.32-0.40

0.40-0.70

≤0.030

0.17-0.37

≤0.035

≤0.035

0.80-1.10

≤0.20

0.15-0.25

 

35CrMo seamless steel pipe mechanical properties:

Tensile strength σb (MPa) : ≥985(100)

Yield strength σs (MPa) : ≥835(85)

Elongation δ5 (%) : ≥12

Reduction of area ψ (%) : ≥45

Impact energy Akv (J) : ≥63

Impact toughness value αkv (J/cm2) : ≥78(8)

Hardness : ≤229HB

Sample size: sample blank size is 25mm

●35CrMo seamless steel pipe heat treatment specification and metallographic structure: heat treatment specification: quenching 850 ℃, oil cooling ; tempering 550 ℃, water cooling, oil cooling.

● Delivery state of 35CrMo seamless steel pipe

 

35CrMo seamless steel pipe calculation formula :

( outer diameter – wall thickness )* wall thickness *0.02466=KG/ m

Heat treatment specification

  • First quenching heating temperature: 850 °C (Coolant – oil)
  • Tempering heating temperature: 600 °C (Coolant – water, oil)

Equivalent

35CrMo equivalent to US ASTM, European Germany DIN EN, British BS EN, France NF EN, Japanese JIS, and ISO standard.

35CrMo material equivalent
China USA Germany Japan France UK ISO
Standard Grade Standard Grade Standard Grade Standard Grade Standard Grade Standard Grade Standard Grade
GB/T 3077 35CrMo ASTM A29/A29M 4135,
4137
DIN EN 10083-3 34CrMo4 JISG 4105 SCM435 NF EN 10083-3 34CrMo4 BS EN 10083-3 34CrMo4 ISO 683 34CrMo4
 
  High production capacity, large inventory, and complete specifications
The factory covers an area of ​​more than 80,000 square meters, imported first-class production equipment, and supporting professional production lines; the annual output of steel is 25,000 tons, and the annual stock is 2,000 tons; the annual stock of 6 meters of φ19, φ25, and φ57 And 3 meters of fixed-length goods, place an order at any time to pick up the goods at any time; long-term inventory of rare stainless steel pipe products to meet the needs of different customers.
20 years of experience in supplying large-scale projects
such as the West-East Gas Transmission Project, Daya Bay Nuclear Power Plant, and Guodian Solar Energy. PetroChina Dushanzi integrated 10 million tons oil refining project, PetroChina Sichuan Petrochemical integrated 10 million tons/year oil refining; Yangzi Petrochemical Seke 800,000 tons polyethylene project, PetroChina Liaohua PTA project; 20 years of large-scale project supply experience, Escort your anti-corrosion pipeline project;
 
  Provide third-party international authority certification
China Classification Society (CCS) certification, Det Norske Veritas (DNV) certification, Lloyd’s Register (LR) certification, Royal UKAS certification, PED EU pressure equipment manufacturing license, Russian product quality and manufacturing factory approval certificate, to meet high standard engineering requirements, only for better service with you!
Perfect delivery management mechanism, fast delivery
, delivery within 24 hours after placing an order, and normal delivery on holidays, according to customer needs, establish a complete set of service mechanisms from ordering, manufacturing, logistics and distribution, real-time query of QR code orders , browse the progress of the order online, which is convenient and fast, and will never affect the progress of your project!
 
  Separate and independent reporting and point-to-point logistics distribution
According to the different construction locations of the project, each batch of products is packaged separately and delivered to each construction point; each steel pipe is accurately marked per meter, which is convenient for calculating construction materials and accounting costs, saving you time and cost and transportation costs.
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    • Heavy weight drill pipe & drill collar
  • Line pipe
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  • Structural pipe
    • Round, square & rectangular pipe
    • Galvanized pipe
    • Pipe piling & drilling
  • Pressure pipe
    • Boiler, heat exchanger, condenser & super heater tube
    • Low, ambient and high temperature service
  • Engineering tube
    • General engineering service
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