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 Exchanger, Superheater, Reheater, Boiler, Mechanical

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Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized

Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized

Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized

Product Details:

Place of Origin: China
Brand Name: YAXIN
Certification: ISO/TS16949

Payment & Shipping Terms:

Minimum Order Quantity: 1 metric ton
Packaging Details: Wooden case
Delivery Time: 15 days
Payment Terms: L/C, D/P
Supply Ability: 5000 metric tons per month
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Detailed Product Description
Material: Carbon Steel Condition: Bright Normalized
Standard: EN10305-1 Shape: Round

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

Standard TDR Steel Grade
ASTM    
ASTM A822/A450 A822
BS    
BS 7416 430LT
BS 7416 CFS 360
BS 7416 CFS 430
DIN    
DIN 2391-2C/2445-2 St 35
DIN 1630/2445-2 St 37.4
DIN 1630/2445-2 St 44.4
DIN 1630/2445-2 St 52.4
EN    
EN 10305-4 E215
EN 10305-4 E235
EN 10305-4 E355
JIS    
JIS JOHS-102 OST 1
JIS JOHS-102 OST 2
JIS JOHS-102 STPG370
JIS JOHS-102 STS370
NF A    
NF A 49-330 TU 37B
NF A 49-330 TU 42B
NF A 49-330 TU 52B

 

 

Small Diameter Precision Carbon Steel Tubing / Pipe with Bright Normalized

 

 

Contact Details
Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.

Contact Person: Yaxin

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