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EN10305 Round Precision Steel Tube Hollow Seamless Mechanical Cold Drawn

Place of Origin Jiangsu, China
Brand Name Hongbao
Certification TS16949,DNV,PED,ISO,TUV,LR
Model Number HBPST-1
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details seaworthy plywooden case packing.
Delivery Time Within 50 days if production
Supply Ability 30000MT per year
Product Details
Material ST37.4,ST52.4,E235,E355,26MnB5,34MnB5 Brand Hongbao
Origin Jiangsu,China OD 6-120mm
Thickness 0.5-15mm Processing Cold Drawn, Cold Rolled
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EN10305 Round Precision Steel Tube


Hollow Seamless Precision Steel Tube


6mm Precision Steel Tube

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Product Description

EN10305 Round Hollow Seamless Mechanical Cold Drawn Steel Tube


Product name EN10305 round hollow seamless mechanical cold drawn steel tube
Steel Grade 45#,20#,16Mn,27SiMn, ST-52,,no-alloy steel
specifications O.D.:40-325mm(H7-H9) ,W.T.:3-30mm, L:fixed or random(1-10m)
Straightness 0.5 /1000
Roughness(Ra) 0.2 to 0.4micron
Processing Type cold drawn, honed
Marking JW, ID, OD
Package banding with steel strips, braiding parcel at outside
Conservation Anti-rust oiled coating on the inside and outside of the surface, plastic caps at both ends
Impact test (-20°C, 27 J, only for special requirement)
Length Max 6M
Surface Treatment Bared



as clients require



Mechanical properties at room temperature
Delivery Condition BK BKW GBK NBK (N)
Steel Grade Rm A % Rm A % Rm A % Rm ReH A %
Mpa (Min) (Min) Mpa(Min) (Min) Mpa(Min) (Min) Mpa(Min) Mpa(Min) (Min)
E255 580 5 520 8 390 21 440~570 255 21
E355 640 4 580 7 450 22 490~630 355 22
E235 480 6 420 10 315 25 340~480 235 25
E215 430 8 380 12 280 30 290~430 215 30











Delivery Condition

1. NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee



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Drive transmission: steering column elements
Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts
Mechanical structure pipe parts in automobile,motorcycles and vehicle
Hydraulic circuits, pneumatic lines and hydraulic suspension
Hydraulic cylinders


EN10305 Round Precision Steel Tube Hollow Seamless Mechanical Cold Drawn 0