We – EPG Team the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing unit in China with 5 diverse branches. For much more information: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
|Identify||Producer of St35 NBK Black Phosphating Tube in China|
|Specification||DIN2391-94/C, EN10305-1, EN10305-4, SAE J524, GB/T3639-2009|
|Metal Quality||St35, St37.4, St45, St52.4, E235, E255, E355|
|Dimensions||OD:3-76mm, wall thickness: .5-6mm|
|Size||4m,6m or tailored|
|Shipping Circumstances||NBK(+N), BK(+C), GBK(+A), BKW(+LC), BKS(+SR)|
|Features||substantial cleanness inside of wall, No deformation after chilly bending, no crack after flaring and flattening, challenging geometrical forming and machining can be recognized|
|Purposes||Utilised in hydraulic system, vehicle Cellular: +86~thirteen 0571 88828 and in the occasion exactly where the substantial precision, brightness, cleanness and mechanical homes of the tube are necessary|
|Packing||Plastic film & Knitting Bundled, Plywood Circumstance or as request|
|Shipping Time||twenty-30days following purchase verified|
2. Chemical Composition (ca EPT analysis
|Steel Gr.||Steel No.||Chemical Compositions(%by mass)|
|St52, St52.4(E355)||one.0508||.22||.fifty five||≤1.60||.571||.571||.571|
three. Mechanical Homes (at room temperature)
4. Generation Stream Chart
Crucial Processes Descriptions:
Tube rolling utilizes compression to decrease the measurement of seamless tubes. It makes use of one or two sets of rol EPT with consistent
cross-segment grooves on the circumference of the tube. The rol EPT are driven by rack and pinion gears of distinct
radii alongside profiled cams, completing a number of 360º rotations all around the tube
Tube rolling is a very precise approach of lowering really slim walled and/or scaled-down diameter tubes, and is usually employed
as the closing chilly operating action. By rolling, we’re capable to accomplish outstanding manage over dimensional tolerances
and area end while also minimizing materials decline and improving the metal’s microstructure.
Cold drawing lowers the diameter by pulling the tube by means of a die that is more compact than the tube. In order to suit the tube
into the die, a single end is swaged thereby minimizing the diameter of the major stop just before drawing. Next, the narrowed
stop is handed through the die and clamped to a drawing trolley which pul EPT the tube by way of the die.
Annealing is employed to soften the metallic prior to further cold doing work or fabrication processes, and increases the general
metallurgical microstructure of the tube. In the course of tube reduction or chilly drawing, it can turn out to be tough and relatively brittle.
To be in a position to attract the tube once more, stresses shaped in the course of cold working want to be taken out to return the content to its
standard point out.
In the course of annealing the tube is heated to a managed temperature and soak time. Via this process the tube remains in
form, but the grains in the construction of the tube reform into a typical unstressed pattern. The resulting annealed tube is
softer and ideal for redrawing
Drawing and annealing typically outcomes in some degree of bowing, generating a slight bend in the tubing. In purchase to
make the tubes straight, we use a number of roll mechanical straighteners to put into action this method, Straightening can
introduce slight adjustments to the dimension and mechanical homes of the tubing, so these facets are really meticulously
managed for the duration of the process.
five. Inspection and Checks
We inspect all lots of tubing just before shipment to make certain that every aspect of the customer’s get has been achieved.
Our in-house inspection and tests abilities incorporate:
- Chemical Composition Examination
- Visible inspection
- Dimensional inspection
- Surface area roughness screening
- Eddy Current testing
- Hydrostatic force screening
- Destructive mechanical screening:
– Yield Strength
– Tensile Toughness
– Hardness screening
– bending, flattening, and flaring
All shipments include a full Te EPT Certification displaying all essential te EPT results and verifying compliance with the get needs.
six. Packing and Shipments
We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing unit in China with 5 distinct branches. For far more particulars: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828 The use of authentic gear manufacturer’s (OEM) element numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating item use and compatibility. Our business and the shown replacement components contained herein are not sponsored, accepted, or produced by the OEM.