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OD 30mm Precision Seamless Steel Tubes , Hydraulic System Round Seamless Tube

Place of Origin China
Brand Name Hongbao
Certification TS16949, ISO9001, OHSAS18001 etc.
Model Number HBPST-1
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details Seaworthy Wooden box, customized Packing
Delivery Time 30 Days
Supply Ability 60000 MT per Year

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Product Details
Shape Round Application Automotive Part, Hydraulic System, High-precsion Machining. Etc.
Payment T/T; L/C Sample Free Sample
Certificate TS16949,DNV,PED,ISO Origin Jiangsu,China
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seamless steel tube


seamless round tubes

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Product Description

Delivery Condition +C Precision Seamless Stee Standard EN10305-1 Steel Round Pipe


Main Date

Standard EN10305-1; DIN2391; DIN2445
Material E235, E355, St37.4, St52.4
Outer Diameter Range: 4-120mm
Wall Thickness Range: 0.5-15mm




EN 10305-1


Delivery Condition  +C No heat treatment after the final cold drawig process. 


Other Aviliable Delivery Condition

NBK(+N): After the final cold drawing operation the tubes are normalized in a controlled atmosphere.

GBK(+A): After the final cold drawing process the tubes are annealed in a controlled atmosphere.

BKW(+LC): After the final heat treatment there is a suitable drawing pass.

BKS(+SR): After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere.


Commonly Used Size

Φ4×0.5 Φ16×0.5 Φ26×1.8 Φ35×9.0
Φ4×0.8 Φ16×0.8 Φ26×2.0 Φ35×10
Φ4×1.0 Φ16×1.0 Φ26×2.2 Φ38×0.5
Φ4×1.2 Φ16×1.2 Φ26×2.5 Φ38×0.8
Φ5×0.5 Φ16×1.5 Φ26×2.8 Φ38×1.0
Φ5×0.8 Φ16×1.8 Φ26×3.0 Φ38×1.2
Φ48×5.0 Φ70×2.8 Φ90×10 Φ130×14
Φ48×5.5 Φ70×3.0 Φ90×12 Φ130×16
Φ48×6.0 Φ70×3.5 Φ90×14 Φ130×18
Φ48×7.0 Φ70×4.0 Φ90×16 Φ140×2.5
Φ48×8.0 Φ70×4.5 Φ95×2.0 Φ140×2.8
Φ48×9.0 Φ70×5.0 Φ95×2.2 Φ140×3.0



Size Tolerance Table

OD Range EN10305(DIN2391)
4-30mm ±0.08mm
31-40mm ±0.15mm
41-50mm ±0.2mm
51-60mm ±0.25mm
61-70mm ±0.3mm
71-160mm ±0.30mm
WT Range ±0.10mm