Pancake Coil Copper Tube
The velocity in the tube is all flocs, and the biggest factor affecting the convective heat release is the thickness of the bottom layer of laminar flow. Because the heat transfer in the bottom layer of laminar flow is heat conduction, and the thermal conductivity of water is very low. In the same case, the thickness of the bottom layer of laminar flow depends on the roughness of the inner wall of the tube. Because the inner wall of copper coil has oxides, the roughness will be larger than that of stainless steel coil, so the laminar flow bottom thickness of copper tube is larger than that of stainless steel tube.
The velocity in the tube is all flocs, and the biggest factor affecting the convective heat release is the thickness of the bottom layer of laminar flow. Because the heat transfer in the bottom layer of laminar flow is heat conduction, and the thermal conductivity of water is very low. In the same case, the thickness of the bottom layer of laminar flow depends on the roughness of the inner wall of the tube. Because the inner wall of copper coil has oxides, the roughness will be larger than that of stainless steel coil, so the laminar flow bottom thickness of copper tube is larger than that of stainless steel tube.

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ITEM |
pancake coil copper pipe |
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STANDARD |
ASTM B75M-02,ASTM B42-02,JIS H3300-2006,GB/T 1527-2006,GB/T 1528-1997,ASTM B111M-04,etc. |
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MATERIAL |
C10100,C10200,C11000,C12000,C1011,C1020,C1100,C1201,C1220,T1,T2, TP1,TP2,C1011,C1020,C1100,C1201,C1220,etc. |
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SPECIFICATION |
Wall Thickness:0.1-10mm |
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Outside diameter:1-30mm |
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Length:be required |
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SURFACE |
Mill,polished,bright,Hairline,brush,checkered,,mirror,antique,sand blast, etching,etc. |
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QUALITY CONTROL |
Mill Test Certification is supplied with shipment, Third Party Inspection is acceptable. |
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PRICE TERM |
Ex-Work,FOB,CFR,CIF,DDP,DDUetc. |
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PAYMENT TERM |
L/C,T/T,D/P,West Union,etc. |
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MOQ |
100KG or be required |
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PACKAGE |
Standard export package,bundled wooden box,suit for all kinds of transport or be requird. |
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