Model NO.	Precision seamless pipe/tube
Type	Seamless
Technique	Cold Rolled/Cold Drawn
Material	Carbon Steel, Stainless Steel, Alloy Steel
Surface Treatment	Bright, Black (Annealed), Oiled, Galvanized
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Mining, Construction & Decoration, Special Purpose
Section Shape	Round
Raw Material	Carbon Steel, Stainless Steel, Alloy
Production Process	Cold Rolled / Cold Drawn
Surface	Bright
Alloy or Not	Ordinary Carbon Steel or Alloy
Pipe Type	Seamless Pipes
Diameter	15mm-260mm
Wall Thickness	1.0mm-30mm
Outer Diameter	10mm-250mm
Application	Automobile and Agricultural Machinery Parts, Mecha
Advantage	Wear-Resistant, Machinable, Easy to Weld
Payment Term	30%T/T Advance + 70% Balance
Product Certification	ISO9001: 2008, CE, FPC, CPR (89/106/EEC), PED (97/
Steel Grade	Q195/Q235/Q345/10#/20#/35#/45#/ 20cr/40cr/ 20crmo/
Production Standards	GB, Bsen, ASTM, DIN En, JIS, ISO, Ks
Tolerance	+/-1%
Transport Package	Standard Airworthy Packaging
Specification	Wall thickness: 1-20mm; outer diameter: 8-380mm; l
Trademark	Shandong Hanbang
Origin	China
HS Code	7304419000
Production Capacity	100000ton/Year

 

Product Description

Precision tube is a high-precision, high-brightness seamless steel tube produced through cold drawing or cold rolling processes. Its inner and outer diameter dimensions can be accurate to within 0.2mm. It ensures bending and torsional strength while being light in weight, so it is widely used in manufacturing precision mechanical parts and engineering structures. It is also commonly used to produce various conventional weapons, barrels, shells, bearings, etc.
Precision steel pipe is a high-precision cold-drawn seamless steel pipe with the characteristics of high accuracy in inner and outer diameter dimensions, wall thickness, good surface finish, smooth inner and outer surfaces, and no impact burrs. Precision steel pipes are usually made of carbon steel, alloy steel, stainless steel and other materials, and are widely used in manufacturing machines, automobiles, aerospace, health equipment and other fields.
Mechanical parts manufacturing: As a raw material for mechanical parts processing, precision steel pipes are widely used in the manufacturing of high-precision shafts, tubes, rollers, pins, etc.
Automobile manufacturing: Precision steel pipes are used in components such as cylinders, sensors, fuel injection systems, and exhaust systems in automobile manufacturing.
Aerospace manufacturing: Due to the characteristics of high precision, thermal strength, corrosion resistance and high wear resistance, precision steel pipes are widely used in engines, leading edge flaps, missile control systems and other parts in the aerospace industry.
Instrument and medical equipment manufacturing: Precision steel pipes are strong, corrosion-resistant and pressure-resistant. They are widely used in high-precision instrument manufacturing, pharmaceutical pipelines, medical equipment and other fields.

 key material used in manufacturing high-precision and high-performance mechanical equipment. It has excellent physical and mechanical properties and is widely used in aerospace, automobile manufacturing, petrochemical and other fields.
 Material characteristics: 1. High precision: Precision steel pipes have high diameter accuracy and wall thickness accuracy, and can meet the accuracy requirements of various mechanical equipment. 2. Excellent mechanical properties 3. Good corrosion resistance 4. Excellent processing performance
 Production process: The production process of precision steel pipes mainly includes steps such as cold drawing, cold rolling and cold extrusion.
1. Cold drawing: The most common production process of precision steel pipes is cold drawing, which means cold processing of hot-rolled steel pipes, and drawing them to make the diameter and wall thickness meet the requirements.
2. Cold rolling: The cold rolling process is to cold process the hot-rolled steel billet. Through multiple passes of rolling and drawing, the size of the steel pipe is gradu.
 Application fields
Precision steel pipes are widely used in aerospace, automobile manufacturing, petrochemical and other fields, with the following typical applications:
1. Aerospace field: Precision steel pipes are used to manufacture high-pressure, high-temperature hydraulic systems and gas systems such as aircraft engines, missiles and rockets.
2. Automobile manufacturing field: Precision steel pipes are used to manufacture key components such as automobile chassis, engines and transmissions to improve the safety and reliability of automobiles.
3. Petrochemical industry: Precision steel pipes are used in oil and natural gas extraction and transportation pipelines. They have the characteristics of high pressure resistance and corrosion resistance to ensure the safe operation of petrochemical equipment.
4. Machinery manufacturing field: Precision steel pipes are used to manufacture various precision instruments, meters and mechanical parts, such as high-precision bearings, instrument cases, etc.ally adjusted and controlled.
3. Cold extrusion: The cold extrusion process is to heat the steel billet to an appropriate temperature and then extrude it through a special die to form a hollow pipe. The cold extrusion process can produce precision steel pipes with uniform wall thickness and high internal and external surface finish.

Detailed Photos

 

 

 

Thickness±10%   (smallest±0.12mm)  0.5-0.81-1.21.5-1.82   outer diameterInner diameter (nominal value and allowable deviation) SizeAllowable deviation 4±0.103±0.302.4±0.302±0.30     65±0.254.4±0.254±0.253.6±0.30 87±0.206.4±0.206±0.205.6±0.305±0.304.4±0.354±0.35 109±0.158.4±0.158±0.207.6±0.257±0.256.4±0.306±0.30 1211±0.15l0.4±0.1510±0.159.6±0,209±0.208.4±0.258±0.25 1413±0.1012.4±0.1012±0.1011.6±0.1511±0.1510.4±0.2010±0.20 1615±0.1014.4±0.1014±0.1013.6±0.1013±0.1012.4±0.1512±0.15 2524±0.1023.4±0.1023±0.1022.6±0.1022±0.1021.4±0.1021±0.10 -2625±0.1024.4±0.1024±0.1023.6±0.1023±0.1022.4±0.1022±0.10 2827±0.1026.4±0.1026±0.1025.6±0.1025±0.1024.4±0.1024±0.10 3029±0.1028.4±0.1028±0.1027.6±0.1027±0.1026.4±0.1026±0.10 35 34±0.1533.4±0.1533±0.1532.6±0.1532±0.1531.4±0.153l±0.15 3837±0.1536.4±0.1536±0.1535.6±0.1535±0.1534.4±0.1534±0.15 4039±0.1538.4±0.1538±0.1537.6±0.1537±0.1536.4±0.1536±0.15 45   43±0.2042.6±0.2042±0.2041.4±0.2041±0.20 5048±0.2047.6±0.2047±0.2046.4±0.2046±0.20 55±0.25  53±0.2552.6±0.2552±0.2551.4±0.255l±0.25 6058±0.2557.6±0.2557±0.2556.4±0.2556±0.25 70   68±0.3067.6±0.3067±0.3066.4±0.3066±0.30 76±0.35  74±0.3573.6±0.3573±0.3572.4±0.3572±0.35 8078±0.3577.6±0.3577±0.3576.4±0.3576±0.35 90±0.40    87±0.4086.4±0.4086±0.40 100±0.45     96.4±0.4596±0.45 110±0.50      106±0.50 120116±0.50 150±0.75        180±0.90        200±1.0       

Chemical composition(%) of precision pipe's commin grade

StandardGradeCSiMnspCr GB/T 699
GB/T 3639
GB3077
GB/T1591
GB/T 8163-201810#0.07~0.130.17~0.370.35~0.65≤0.035≤0.035 20#0.17~0.230.17~0.370.35~0.65≤0.035≤0.035 35#0.32~0.390.17~0.370.35~0.65≤0.035≤0.035 45#0.42~0.500.17~0.370.50~0.80≤0.035≤0.035 40Cr0.37~0.440.17~0.370.50~0.80≤0.035≤0.0350.08~1.10 25Mn0.22~0.290.17~0.370.70~1.00≤0.035≤0.035≤0.25 Q345B≤0.20≤o.50≤1.7≤0.035≤0.035≤0.3 37Mn50.30~0.390.15~0.301.20~1.50≤0.015≤0.020

Conventional mechanical properties of precision pipe

StandardGradeDelivery Conditions BK(hard)BKW(soft) Tensil Stength(MPa)Make percentage elongation(%)Tensile stength(MPa)Make percentage elongation(%) GB/T 3639
GB 307720#≥550≥10≥490≥15 25Mn≥600≥12≥540≥15 Q345B≥620≥12≥550≥15 45#≥645≥8≥625≥15 40Cr≥784≥14 37Mn5≥784≥14

 

 

 

 

 

 

The mechanical engineering workshops of our factory are all equipped with numerical central control ,Our factory has been constantly improving the platform construction, improving the quality of technical team,strengthening the invention of products category, formed complete R & D system and production quality management system, wined high reputation in the iron and steel industry.

    1. wood pallet packing cover with water-proof paper
    2. steel pallet packing cover with water-proof paper
    3. wood box packing
    4. steel pallet packing cover with steel box
    5. in bundles with steel strip no extra packing
    6. packaged as customers' requirments.