Cold-drawn pipes have become the first choice for high-demand applications due to their excellent dimensional accuracy, mechanical strength and smooth surface. This process achieves precision forming and thinning of the outer diameter and wall thickness of the tube by forcibly drawing the metal tube blank through a die or mandrel at room temperature. This process not only reshapes the geometric structure of the tube, but also simultaneously improves the tensile strength and hardness of the material through cold deformation strengthening, thereby optimizing the overall performance.
Products Description
Powerful Solutions For Cold Drawn Stator Tubes
Preparation: Start with a hot-rolled or extruded tube.
Cleaning: Remove scale/oxides via acid pickling or abrasive blasting.
Drawing: Pull the tube through a hardened die or over a mandrel to achieve precise dimensions.
Annealing (Optional): Heat treatment may follow to relieve stress or adjust hardness.
Materials:
Common materials include carbon steel, stainless steel, copper, brass, aluminum, and specialty alloys (e.g., titanium).
Properties:
High Precision: Tight tolerances (±0.05 mm) and uniform wall thickness.
Superior Surface Finish: Smooth, burr-free surfaces reduce post-processing.
Enhanced Strength: Strain hardening during drawing increases tensile strength and hardness.
Improved Dimensional Stability: Less distortion compared to hot-working methods.
Seamless Honed Pipe Cold Drawn Tubes detail
Application: producing of hydraulic/ pneumatic cylinders, pumps, motor shells, transmission shafts and transmission roller steel pipes.
Original: Jiangsu, China
Certification: ISO9001.
Material: SAE1020, 20#, ST45, CK45, ST52, E355
Payment term: TT, LC
Delivery date: usually 20 to 40 days.
Packing: packed in bundle, oiled inside, with caps on both ends.
Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: Depends on exact size and material.
Products characteristics
4140 seamless pipes/tubes are commonly used grade for oil pipes. It has good processability, small processing
deformation and good fatigue resistance. It is a medium hardenability steel with good strength and good
comprehensive mechanical properties: High strength, hardenability, good toughness, high temperature recovery
strength and long-lasting strength.
4140 quenched & tempered steel grade covers80KS1-140KS1, single piece performance fluctuation does not
exceed 30MPa, full section hardness difference does not exceed 3HRC, P110(include P110 )below steel grade V-
type impact test value at 0 C reaches to 80J or more, Q125(include Q125 ) above steel grade the V-type impact test
value at 0 C is up to 60J or more.
Products application
Cold drawing Tubes/pips, known for their precision, superior surface finish, and enhanced mechanical properties, are utilized across diverse industries.
Production process
Raw material – annealing for material of 45#, 27SiMn, 25Mn – Acid cleaning – parkerizing & Saponifying – cold drawn – leveling – saw off bad section – stress relieving – leveling –honing or skiving – inspection – oiled plated - packing
Quality control
1. We only buy raw material from famous tube factory, and Checking raw material quality before production.
2. We check the tube ID tolerance, OD tolerance and surface after cold drawn one by one.
3. We inspect the honed tube inside tolerance and surface again one by one after honing or skiving.
Packaging & Delivery
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Packaging Details |
in bundle, with plastic caps, anti-rusted oiled, with woven bags |
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Delivery Time |
Shipped in 20 days after payment |
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