Mining Machinery
Precision Hydraulic Mechanical Carbon Steel Seamless Pipe OD 6 - 350mm WT 0.8 - 35mm
Precision Hydraulic Mechanical
Description
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BS 6323-4 PRECISION MECHANICAL STEEL TUBING FOR HYDRAULIC
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Specifications:
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Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling
Ends: BE/PE, ends caps
Marking: as per requirement
Size:(mm)? OD: 6~350mm? ????WT: 0.8~35mm
As per standard or as per customer’s requirement
Length: ≤16m. Fixed Length (6m,9m,12m, 16m or as per requirement) or random length
Package: Hexagonal Bundles with steel strips and plastic wrapping outside/Wooden box/Wooden crate/Steel frame/As per customer’s requirement
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CHEMICAL COMPOSITION (%):
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Steel grade | Chemical composition (%) |
Steel grade | Material number | C≤ | Si≤ | Mn≤ | P≤ | S≤ |
St 30 Si | 1.0211 | 0.1 | 0.3 | 0.55 | 0.025 | 0.025 |
St 30 Al | 1.0212 | 0.1 | 0.05 | 0.55 | 0.025 | 0.025 |
St 35 | 1.0308 | 0.17 | 0.35 | 0.40 | 0.025 | 0.025 |
St 45 | 1.0408 | 0.21 | 0.35 | 0.40 | 0.025 | 0.025 |
St 52 | 1.0508 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 |
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%. |
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MECHNICAL PROPERTIES (Minimum Values) :
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Steel Grade | BK | BKW | GBK | NBK | ? |
Tensile StrengthN/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | ? |
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St30 Si | 400 | 8 | 330 | 12 | 280 | 30 | 290-420 | 30 | ? |
St30 Al | 400 | 8 | 330 | 12 | 280 | 30 | 290-420 | 30 | ? |
St 35 | 440 | 6 | 370 | 10 | 315 | 25 | 340-470 | 25 | ? |
St 45 | 540 | 5 | 470 | 8 | 390 | 21 | 440-570 | 21 | ? |
St 52 | 590 | 4 | 540 | 7 | 490 | 22 | 490-630 | 22 | ? |
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DELIVERY CONDITION:
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Designation | Symbol | Description |
Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
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INSPECTION AND TEST:
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CHEMICAL COMPOSTION TEST. MECHANICAL PROPERTIES TEST(tensile strength, yield strength, elongation, flaring, flattening, hardness, etc). SURFACE AND DIMENSION CHECK. NON-DESTRUCTIVE TEST(eddy current test/ultrasonic test), HYDRAULIC TEST.
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Description:
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BS 6323-4 PRECISION MECHANICAL STEEL TUBING FOR HYDRAULIC
Precision Steel Tube Standard: DIN 2391 ?EN10305-1, EN10305-4, BS 6323,?ISO 8535
Grade: St 30 Si / St 30 Al / St 35 / St37 / St37.4 / St45 / St 52 / St52.4 / E215 / E235 / E355
Size:(mm)
Out Dimensions: 6 mm ~ 350 mm
Wall Thickness: 0.8 mm ~30mm
Length: Fixed(6m,9m,12m,16m) or normal length or as per customer’s requirement???
Top quality products
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Applications:
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1. Automotive?fields
?A.?Fuel?injection?lines/nozzles
?B.?CNG?(Compressed?Nature?Gas)?tube--?Burst?pressure:?1307Bar,?Working?Pressure:?around?350bar
?C.?Drive?transmission:?Steering?column?elements
?D.?Gear?shafts,?hand?brake,?front?axles,?airbag?inflators,?stabilizers,?seat?fasteners,?front-wheel?drive?shafts
2.?Hydraulic?Fields
A.?Hydraulic?circuits?(HPL),?pneumatic?lines,?and?hydraulic?suspension?
B.?Hydraulic?cylinders?(HPZ)
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Competitive Advantage:
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Always put quality on first consideration makes us keep our qulity stable and good. Always put customer’s benefit before ours makes our good service and gain us good reputation.
Advanced equipments. Sincere , truth and careful attitude on communication and production.
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CHANGZHOU RUIYUAN STEEL TUBE CO., LTD.
Carbon Steel Seamless Pipe,Seamless Boiler Tubes,Seamless Steel Pipe
Address: INDUSTRIAL ZONE, ZOUQU TOWN, WUJIN DIST., CHANGZHOU CITY, JIANGSU PROV., CHINA,
Changzhou, Jiangsu
China, 213000
Tel: 86-519-83830661
Fax: 86-519-83830662
