| specifications︰ | THE LOW CARBON SINGLE WALL MULTIPLE USING STEEL TUBE IS HIGH TECH PRODUCTS FOR REPLACE OF THE DOUBLE WALL TUBE IN 90S. IT IS SUITABLE FOR GENERAL ENGINEERING USE. PARTICULARLY, THE AUTOMOTIVE, REFRIGERATION
STOVE INDUSTRIES, PIPELINE SYSTEMS. SUCH AS CONDENSER , STEAM GENERATOR EXHAUST PIPE, OIL LINES, FUEL LINES. BRAKE LINES . AND ALL KINDS OF OTHER ELECTRICAL HEAT CASING PIPE. ITS ALSO APPLY IN THE PLANE, SHIP, MACHINE TOOLING, INSTRUMENT AND HEAT EXCHANGER.
THE PRODUCT PROCESS GOOD PROPERTIES IN TENSILE STRENGTH, HYDROSTATIC
PLASTICITY, HIGH TEMPERATURE RESISTANCE, CORROSION RESISTANCE, NOT
EASY TO CONGEST DIRT . COMPARE WITH DOUBLE WALL TUBE, IT IS LIGHTER
WEIGHT BETTER QUALITY, HIGHER EFFICIENCY AND LOWER COST.
THE PRODUCT IS MADE OF IMPORT RAW MATERIAL TO MEET THE ASTM A-254-91 AND ASTM A-512-91A STANDARD. THE PRODUCTION LINE PROCESS IS FULLY
AUTOMATIC CONTROL AND TEST PROCESS IS USE COMPUTERIZE INSTRUMENT.
SERIES OF MECHANICAL AND CHEMICAL PEOPERTY TEST ENSURE PRODUCTS TO
MEET WITH USERS REQUIREMENTS.
CHEMICAL REQUIEMENTS: (%) C < 0.08 ; Mn 0.15 ~ 0.35 ; p<0.015 ; s < 0.02 ;
SI < 0.01
THE MAIN SIZE ARE : 3/16 1/4 5/16 3/8
and 5.0mm 6.0mm 7.0mm 8.0mm 10.0mm 12.0mm
THE WALL THICKNESS IS 0.71MM
THE SURFACE OF STEEL TUBE CAN BE : COOPER COATED OR ZINC COATED .
PRODUCT TECHNICAL PROPERTIES:
TENSILE STRENGTH ( min ) : 290MPa
YIELD STRENGTH (min ) : 180MPa
EXPANSION ( min ) : 25%
PRESSURE PROOF TEST ( min ) ( O < 9.53 ) : 2MPa
PRESSURE RUPTURE TEST ( min ) : 40MPa
CLEANLINESS OF INSIDE SURFACE : < 0.19 g/M2
BEND TEST : THE FINISHED TUBING SHALL STAND BENDING ON A CENTERLINE
RADIUS EQUAL TO THREE TIMES THE TUBING OUTSIDE DIAMETER
WITHOUT KINDING , CRACKING , OR DEVELOPING OTHER FLAWS.
FLATTENTING TEST : A SECTION OF TUBING ( > 64mm ) , SHALL STAND BEING
FLATTING BETWEEN PARALLEL PLATES UNTIL THE INSIDE
WALLS ARE IN CONTACT WITHOUT CRACKING OR OTHER-
WISE SHOWING FAWS .
FLARE TEST : EXPAND TUBING END 20% ,WITHOUT SPLITTING CRACKING, OR
FLAWS IN WELD SEAM.
DOUBLE FLARE TEST : ACCORDING TO SAE J533 STANDARD .
RESISTANCE TO CORROSION OF ZINC COATING : ACCORDING TO GB9794, THE
FINISHED TUBING STORE ABOUT
72H , WITHOUT RUST-EATEN AND
PEEL OFF.
STOCK : THE PIPE INSIDE ARE FILLED BY NITROGEN .
PACKING: PACKED IN ROLL AND THEN COVERED BY PVC BELT . 1000-2000M/PC ,
WEIGHT (MIN) < 450KGS / ROLL . 50000-60000M / 20 CONTAINER .
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| Advantages︰ | The product is the second generation, which used steel instead of copper. This kind of products have good further processed technology and very low cost. It's welding quality is more reliable than double wall tube.
The product has two series (copper tube, plain tube ) and two conditions (coil and bundle condition) now, the maximum coil weight is 450kg and the bundle length is determined by users in the range of 3-7m.
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| Ship Date︰ | Within 3o Days Upon Receipt Of Your L/C Or T/T. |
| Standard Met︰ | ASTM A214, A513. |
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