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Thin Wall Galvanized Steel Tube

Categories Galvanized Steel Tube
Place of Origin: Jiangsu China (Mainland)
Brand Name: JIANGSU HUACHENG
Certification: ISO9001 14001 BV TUV PED DNV etc
Model Number: HC
MOQ: 5MT
Packaging Details: Exporting package/wooden box package/Or per customers’ requirement
Delivery Time: 25~35days
Payment Terms: 30%T/T in advance or 100% L/C at sight
Supply Ability: 8000MT/Month
Application: Machinery|Automobile|Atuo|Oil cylinder tube|Military|Railway industry
Certificate: PED|ISO|BV|TUV
Delivery Condition: Annealed|Normalized|Heat treatment|BK|BKS|BKW|NBK|GBK
Grade: St45|St44|St52|St 35|St37|E235|E355
Product Name: Galvanized Steel Tube
Section Shape: Round
Standard: EN 10305-4|EN 10305-1|DIN 2391|ASTM B633-07
Surface treatment: Galvanized
Technique: Seamless|Cold Drawn
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    Thin Wall Galvanized Steel Tube


    St45 St37 E235 E355 Galvanized Steel Tube , Cold Drawn Oil cylinder Tube ASTM B633-07


    Quick Detail:


    Standard: ASTM B633-07
    Size:(mm)
    Out Dimensions: 6mm – 350mm
    Wall Thickness: 0.8mm - 30mm
    Length: Fixed(6m,9m,12,24m) or normal length(5-12m)


    Description:


    Dimensions of the galvanized tubes for hydraulic and pneumatic lines:


    Outside diameter ranges from 6 to 350 mm and the wall thickness ranges from 0.8 to 30 mm. Precision steel tubes are delivered according to EN 10305-4, DIN 2391-1, STN 42 6711 and 42 6712, ČSN 42 6711 and 42 6712.


    Synopsis of Process Routing:

    DIN highly accurate cold drawn bright seamless steel tube is used as the tube to be galvanized, the outer wall is electroplated, caps are covered at two ends of tube to prevent from the dust.

    Main Features:

    Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.


    Length of the galvanized tubes:

    in diameter <= 16 mm >=6000 + 100 mm
    in diameter >= 16 mm <=24000 + 50 mm


    Tolerances of the zinc coated tubes:


    -tolerances of the outside diameter:

    diameter between 4 - 30 mm

    ±0,08 mm

    diameter between 35 - 38 mm

    ±0,15 mm

    diameter above 42 mm

    ±0,20 mm

    -tolerances of the inside diameter are according to EN 10305-4

    -tolerance of the wall thickness ± 10%


    The Main Steel grades for the zinc coated tubes:


    St 35 / St37.4 / St45 / St44.4 / St 52 / St52.4 / E235, E255,E355

    DIN 2391 / EN 10305-1/ EN 10305-4

    Precision seamless tube and pipe with European&Germany standard

    Application:

    for Atuo;for machinery use; Oil cylinder tube; Motorcycle shock reducer steel tubes; Auto shock reducer inner cylinder.

    Size(mm):

    O.D.:6mm-350mm ; W.T.:1-30mm; L:max 24000


    Grade and Chemical Composition(%):


    Grade

    Chemical Composition(%):

    C max

    Si max

    Mn

    P max

    S max

    St 44.4

    0.21

    0.35

    ≥0.40

    0.025

    0.025

    St 37.4

    0.17

    0.35

    ≥0.40

    0.025

    0.025

    St 52.4

    0.22

    0.55

    ≤1.60

    0.025

    0.025


    Condition on delivery:


    Steel Grade

    BK

    BKW

    GBK

    NBK

    Code No.

    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

    Tensile

    Strength

    N/mm2 min

    Elongation at rupture N/mm2 min

    St 44.4

    540

    5

    470

    8

    390

    21

    440-570

    21

    St 37.4

    440

    6

    370

    10

    315

    25

    340-470

    25

    St 52.4

    590

    4

    540

    7

    490

    22

    490-630

    22


    Final supply conditions:


    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.


    Galvanized tube category and related standard:


    Galvanized tube category and related standard

    Galvanized tube category

    Related Standard

    Zinc coating thickness

    Salt spray test

    Gr3+ Galvanized tube with blue and white zinc

    ASTM B633-07
    (Type III,SC 1/2/3/4)

    5-25um

    24--72 hours without white rust;48--168 hours without red rust

    Gr3+ Galvanized tube with color zinc

    ASTM B633-07
    (Type II,SC 1/2/3/4)

    5-25um

    48--96 hours without white rust;48--240 hours without red rust

    Gr6+ Galvanized tube with color zinc

    ASTM B633-98
    (Type II,SC 1/2/3/4)

    5-25um

    24--96 hours without white rust;48--124 hours without red rust


    Applications:


    Zinc coated precision steel tubes (galvanized tubes) are destined for hydraulic and pneumatic pressure distribution (so called HPL tubes), production of automobile components, utility vehicles as well as for production of machine products such as fittings and joints. Cold drawn precision tubes are used as the semi-finished product and they are made from rolled seamless tubes. Precision tubes HPL types are made from carbon and alloyed steel.


    Application areas:

    Automotive, military, railway industry, with high requirement of the tubes brightness, cleanness, antirust, and antisepsis.


    Competitive Advantage:


    Huacheng Industry Pipe Making Corporation

    Asia Leading Steel Pipe & Tube Manufacturer with more than 250,000Tons/Year, >60% shipped to more than 35 Countries.We aims at manufacturing quality pipes & tubes with reasonable and competitive price, good quality for our global customers.


    Factroy Pictures:


    Pipe & Tube Processing

    Factory Equipments:


    Production Line:

    Quality Control:



    Steel Pipe & Tube Application:

    Package:

    Export Standard / Wooden Box

    Main Certificates:

    PED ISO BV TUV etc.

    Main Customers:



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