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Marine Mooring Equipment
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Marine Painting
Marine Auxiliary Machinery
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  - Marine Air Cooled Air Compressor
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  - UV Ballast Water Management System
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Marine Valve
- JIS Marine Valve
- DIN Marine Valve
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- GB Marine Valve
- CB Marine Valve
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- Marine Gate Valve
- Marine Globe Valve
- Marine Angle Globe Valve
- Marine SDNR Valve
- Marine Angle SDNR Valve
- Marine Check Valve
- Marine Storm Valve
- Marine Butterfly Valve
- Marine Quick Closing Valve
- Marine Fire Valve
- Marine Self Closing Valve
Marine Valve Accessories
- Air Vent Head
- Marine Filter
- Marine Mud Box
- Marine Strum Box
- Deck Control Unit
- Marine Scupper
- Marine Sight Glass
- Marine Level Gauge
- Marine Level Switch
- Marine Flow Meter
- Others
Marine Pump
- Marine Centrifugal Pump
  - Marine Horizontal Centrifugal Pump
  - Marine Vertical Centrifugal Pump
- Marine Screw Pump
  - Marine Single Screw Pump
  - Marine Double Twin Screw Pump
  - Marine Three Screw Pump
- Marine Gear Pump
- Marine Vortex Pump
- Marine Ejector Pump
- Marine Diaphragm Pump
- Marine Piston Pump
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- Marine Emergency Fire Pump
- Marine External Fire Pump
- Marine Ballast Water Pump
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- Marine Bilge Pump
- Marine Sewage Pump
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- Marine Pump Parts
  - Marine Pump Casing
  - Marine Pump Impeller
  - Marine Pump Shaft
  - Marine Pump Cover
Marine Life-saving Equipment
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Fire-fighting Equipment
- Fire Monitor
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Marine Cable
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  - DIN 89158/89160 Marine Power Cable
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Marine Electrical Equipment
- Lighting Fixture
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Marine HVAC
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  - Marine Mushroom Ventilation
  - Marine Goose-neck Ventilation
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- Ventilation Grille
- Diffuser
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Labour Protection Appliance
Marine Decorative Material
- Rock Wool Panel
- Aluminum Honeycomb Panel
- Marine Fire Proof Panel
- Marine Ceiling
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- Ceramic Tile
- Cabin unit
- Thermal Insulation Material
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Marine Anode
Marine Pipe Fitting & Flange
- Marine Pipe Fitting
  - Tank Head
- Marine Flange
- Gasket
Marine Instrument
- Thermometer
- Pressure Gauge
- Marine Pressure Transmitter
- Level Transmitter
- Marine Level Gauge
- Marine Float Level Controller
- Flow Meter
- Marine Temperature Transmitter
Ship Building Equipment
- Shot Blasting Machine
- Plate Rolling Machine
- Plate Shearing Machine
- Press Brake Machine
- Pipe Bending Machine
- Shipbuilding Plates
- Marine Steel Sections
- Marine Steel Pipes
- Marine Steel Sheet Pile
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- Marine Cutting Machine
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Home > Marine Steel Pipes

Marine Precision Steel Tubes

Marine Precision Steel Tubes

Marine precision steel tubes are a sort of precision steel tubes for marine purposes, it has the characteristics of no oxide layer, high precision and high smooth finish.

The precision steel tubes are mainly used to cylinders, oil cylinders, hydraulic systems.The main chemical compositions of the tubes are C, Si, Mn, S, P, Cr. We are capable of supplying various kinds of precision steel tubes, such as EN/DIN high precision BA seamless steel tubes, EN/DIN hydraulic tubes with high precision, high precision galvanized steel tubes, cold rolled and BA high precision seamless tubes.

The tubes meet the standards GB/T 3639, EN 10305, DIN 2391, ASTM A179, JIS G3445... We are able to provide you a full line of specification. The marine precision steel tubes are certified by leading classification societies, and we can provide relevant certificates according to your requirements. Please contact us for more information!

Features of Marine Precision Steel Tubes:

• Materials: 10#, 20#, 35#, 45#, Q345B, ST35/E235, ST37.4, ST45/E255, ST52/E355...

• Specifications: O.D. 4 ~ 200mm

W.T. 0.5 ~ 22mm

Random length 2000 ~ 12000mm, fixed length, or as per customer’s request

• High precision, under high pressure without linkage, excellent mechanical properties

• Delivery conditions: NBK(+N), BK(+C), GBK(+A), BKW(+LC), BKS(+SR)

• Applications: hydraulic systems, engineering machinery

Mechanical Properties of Partial Steel Grades:

Steel Grades	Delivery Conditions
	+Cb		+LCb		+SR			+Ac		+N
	Rm MPa	A %	Rm MPa	A %	Rm MPa	RaH MPa	A %	Rm MPa	A %	Rm MPa	RcHd MPa	A %
	≥
10	430	8	380	10	400	300	16	335	24	320~450	215	27
20	550	5	520	8	520	375	12	390	21	440~570	255	21
35	590	5	550	7	-	-	-	510	17	≥460	280	21
45	645	4	630	6	-	-	-	590	14	≥540	340	18
Q345B	640	4	580	7	580	450	10	450	22	490~630	355	22
Note	a. Rm = tensile strength, RaH = upper yield strength, A = elongation b. In consideration of the impact of cold working, the yield strength extremely approximates tensile strength, so the formula is recommended: For the +C condition: RcH ≥ 0.8 Rm For the +LC condition: RaH ≥ 0.7 Rm c. The recommended formula: RcH ≥ 0.5Rm d. The pipe with outer diameter less than or equal to 30mm, and wall thickness less than or equal to 3mm, its minimum upper yield strength is allowed to reduce 10MPa.

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Marine Precision Steel Tubes

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