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Marine Precision Steel Tubes

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Marine Precision Steel Tubes

Marine Precision Steel Tubes

Marine precision steel tubes are a sort of precision steel tubes for marine purposes. Due to their features of no oxidation layers, high precision, 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°Įs 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 Conditionsc

+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.

Marine Precision Steel Tubes

Marine Precision Steel Tubes

Marine Precision Steel Tubes

Marine Precision Steel Tubes

Marine Precision Steel Tubes

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Our mail: manager@hiseamarine.com

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