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NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD
NEW-ERA STEEL TUBE NINGBO PIPEWAY TRADE CO.,LTD LEADING PRODUCER AND EXPORTER OF STEEL TUBES
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Precision Round Weldable Steel Tubing 1 - 200m Length For Condenser GB/T24187

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Precision Round Weldable Steel Tubing 1 - 200m Length For Condenser GB/T24187

Brand Name : New Era
Model Number : GB/T24187
Certification : ISO 9001,ISO 14001,TS 16949
Place of Origin : China
MOQ : 5 tons
Price : Negotiation
Payment Terms : T/T
Supply Ability : 5000 tons/month
Delivery Time : 30 days
Packaging Details : Bundles Package, Wooden Box Package
Material : Q195 Q215 Q235 Q295 Q345
Surface : Bright ,Copper Plated, Galvanized Or Customers'requirements.
OD Size : 3.18-18mm
WT Size : 0.5-1.2mm
Type : Welded Steel Pipes
Shape : Round,Or According To The Customer's Request
Length : 1-200m
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GB/T24187 Cold Drawn Precision Welded Steel Coil Tubes for Condenser
Spec:
Material:C Si Mn P S
Size Range:OD:3.18-18mm
WT:0.5-1.2mm
General Length:1-200m
Tolerance:
According to the following tables or customers’ request.


Table 1 Outer diameter, wall thickness and theoretical weight

OD/mmWT/mm
0.300.400.500.600.650.700.800.901.001.30
theoretical weight /(kg/m)
3.180.02130.02740.0330
4.000.02740.03550.04320.0503
4.760.03300.04300.05250.06160.06590.0701
5.000.03480.04540.05550.06510.06970.0742
6.000.04220.05520.06780.07990.08580.09150.10260.11320.1233
6.350.04480.05870.07210.08510.09140.09750.10950.12100.1319
7.940.05650.07440.09170.10860.11690.12500.14090.15630.17120.2129
8.000.05700.07500.09250.10950.11780.12600.14210.15760.17260.2148
9.530.06830.09010.11130.13210.14230.15240.17220.19150.21040.2639
10.000.07180.09470.11710.13910.14990.16050.18150.20200.22200.2789
12.000.08660.11440.14180.16870.18190.19510.22100.24640.27130.3430
12.700.09170.12130.15040.17900.19320.20720.23480.26190.28850.3655
14.000.10140.13420.16650.19830.21400.22960.26040.29080.32060.4072
15.880.11530.15270.18960.22610.24410.26210.29750.33250.36700.4674
16.000.11620.15390.19110.22790.24610.26410.30000.33520.36990.4713
18.000.13100.17360.21580.25750.27810.29870.33930.37950.41920.5354
Theoretical weight of no additional coating, density of steel is 7.85 kg/

Table2 Allowable deviation of outer diameter of steel pipe


Outer diameterCommon precisionHigh precision
<4.76±0.08±0.05
4.76-8.00±0.12±0.07
>8.00-12.00±0.16±0.10
>12.00±0.20±0.12

Table 3 Permissible deviation of steel tube wall thickness


Wall thicknessPermissible deviation
<0.70±0.05
≥0.70±0.07

Table 4 Allowable deviation of specified length of steel pipe


LengthAllowable deviation
≤2000

+4

0

>2000-5000

+7

0

>5000-8000

+10

0


TABLE 5 Chemical Composition Of Steel Strip (Mass Fraction)%

CategoryCSiMnPS
Cold rolled low carbon steel strip≤0.08≤0.03≤0.30≤0.030≤0.030
Cold rolled ultra low carbon steel strip≤0.008≤0.03≤0.25≤0.020≤0.030

TABLE 6 Mechanical Properties Of Cold Rolled Low Carbon Steel Strip

Thickness

/mm

Tensile Strength


Yield Strength


Elongation

A/%

0.25~<0.35≥270≥32
0.35~<0.50≥34
≥0.50≥36

a Replace with when the yield phenomenon is not obvious.

b Sample type of sample number D14 in GB/T 228-2002.


TABLE 7 Mechanical Properties Of Cold Rolled Ultra-low Carbon Steel Strip

Thickness

/mm

Tensile Strength


Yield Strength


Elongation

A/%

≤0.50≥280130~250≥38
>0.50≥40

a Replace with when the yield phenomenon is not obvious.

b Sample type of sample number P14 in GB/T 228-2002.


TABLE 8 Mechanical properties of steel pipe

Category

Tensile Strength


Yield Strength


Elongation

A/%

Ordinary steel pipe(MA)≥270≥180≥14
Soft steel tube(MB)≥230150~220≥35

a Replace with when the yield phenomenon is not obvious.

b Sample type of sample number S7 in GB/T 228-2002.

Characteristic:

QUALITY ASSURANCE

Good surface quality

Good OD and ID tolerance controlled to Technical Standard
Stable quality
100% Eddy Current Test


Processing:W-H W-C


Widely used in the field of:Condenser, evaporator, cooler tube fuel pipe of refrigeration,automobile and electric appliance industrial



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