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Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
Zhangjiagang Bonded Area Yaxin Precision Tube Co., Ltd. Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd. Steel Tubing for Automotive Powertrain, Shock Aborber, Steering And Steel Tubing for Heat
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Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized

Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
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Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized

Brand Name : YAXIN
Certification : ISO/TS16949
Place of Origin : China
MOQ : 1 metric ton
Payment Terms : L/C, D/P
Supply Ability : 5000 metric tons per month
Delivery Time : 15 days
Packaging Details : Wooden case
Material : carbon steel
Condition : bright normalized
standard : EN10305-1
shape : round
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Precision tubes for hydraulic lines


Tube sizes acc. to EN standard, ASTM standard, JIS standard.


Precision tubes are made using the cold drawing process. The rolled seamless tubes are used as the semi-finished product. Precision tubes are made from carbon and alloyed steel. Tubes are destined for hydraulic distribution systems and circles.


Tube dimensions for hydraulic lines,

Inside diameter ranges from 6 to 80 mm and wall thickness ranges from 1.0 to 12.5 mm. Precision steel tubes are delivered according to EN 10305-4, DIN 2391-1. More detailed overview of produced dimensions according to EN standards, according to ASTM standards and according to JIS standards.


The Steel grades for the hydraulic lines

Tubes are produced from the following steel. According to EN 10305-4: E215, E235, E355 and according to DIN 2391-2C: St35 and DIN 1630: St37.4, St44.4, St52.4. Steels are produced in an electric arc furnace and they are fully killed. Upon agreement it is possible to deliver other types of steel.


Allowable pressure for hydraulic lines

The highest allowable pressure for hydraulic lines in relationship to steel and tube testing is calculated according to DIN 2413.


Delivery condition and thermal treatment of the tubes for hydraulic lines

Tubes are delivered as cold drawn and normalized NBK according to DIN, +SR according to EN, . N according to ASTM. Coarseness of the outer and inner surface (starting with 15 mm of the inside diameter) is Ra <= 4 micrometers (0.004mm).


Length of the tubes for hydraulic lines

- manufactured length of the precision tubes is 6 meters (tolerances at the standard length is 0 + 50 mm and at the exact length is 0 + 10 mm)

- exact length is in the range of 3 000 - 9 000 mm.


Tolerances of the tubes for hydraulic and lines

Tolerances of the precision tubes meet the appropriate standards. MEILONG offers precision tubes with tighter tolerances, i.e. tolerances that are tighter compared with the standard values.


Straightness of the tubes for hydraulic lines

3 mm / m (1 : 1 000), overall straightness is 0,0015 % maximum of the total length of a tube.


Ends of the tubes

The ends of the tubes are smooth and enclosed with a plastic plugs.


Marking of the tubes

Each tube is marked by the InkJet system along the whole length according to standards or according to customer requirements. Tube bundles for hydraulic lines are marked by tags.


Surface protection of the tubes for hydraulic lines

The tubes are delivered as oiled, phosphated or electrolytically galvanized and chrome-coated.


Packaging of precision tubes for hydraulic lines

The tubes are delivered in bundles with either circular or hexagonal cross-section weighing maximum 2000 kilograms. The tubes are tied with a steel band. Upon agreement it is possible to protect the surface with paper lining or protect the ends of the bundle with PVC foil.


Testing of the tubes

The electromagnetic nondestructive testing of leak tightness is always performed according to EN 10246-1 or other corresponding standards. Selection of the tests is defined in EN 10305-1. On the top of it the NDT test and the flattening or drift expanding test is possible.


Certificates for the tubes

According to the following standards: EN 10 204 or DIN 50049

Specified testing 3.1.B or 3.1

Upon agreement - 3.1.C or 3.2


Standards and steel grades

StandardTDRSteel Grade
ASTM
ASTMA822/A450A822
BS
BS7416430LT
BS7416CFS 360
BS7416CFS 430
DIN
DIN2391-2C/2445-2St 35
DIN1630/2445-2St 37.4
DIN1630/2445-2St 44.4
DIN1630/2445-2St 52.4
EN
EN10305-4E215
EN10305-4E235
EN10305-4E355
JIS
JISJOHS-102OST 1
JISJOHS-102OST 2
JISJOHS-102STPG370
JISJOHS-102STS370
NF A
NF A49-330TU 37B
NF A49-330TU 42B
NF A49-330TU 52B



Product Tags:

seamless carbon steel tube

      

welding round tubing

      
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Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized Images

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