• Jiangsu Hongbao Group Co., Ltd.
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  • Jiangsu Hongbao Group Co., Ltd.
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Phone Number : 86-512-58715276
Whatsapp : +8615895686919

15mm WT Precision Seamless Steel Tubes , High Precsion Steel Tube Pipe

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.
Delivery Condition +C,+LC,+SR,+N,+A Payment T/T; L/C
Sample Free Sample Material E235, E355; St37.4, St52.4
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precision seamless pipe


seamless steel tube

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Product Description

Precision Seamless Steel Tubes Delivery Condition BKW Standard EN10305-1 Steel Round Pipe



Precision seamless steel tube is a high precision steel tube after cold rolling or cold drawing


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

Delivery Condition 

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


Other Delivery Conditions 

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.

BK(+C): No heat treatment after the final cold drawig process.

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



1. Smaller outer diameters;

2. High precision can be done in small batch production;

3. Cold drawing finished products with high precision and good surface quality.

4. The transverse area of the steel tube is more complicated;

5. Steel pipe performance is superior, metal is more dense.



Automotive Part,

Hydraulic System,

High-precsion Machining.