We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more specifics: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
1. Descriptions
| Title | seamless tubing vs welded tubing originated China |
| Specification | ASTM A213, ASTM A269, ASTM A312, EN15716-5, GB/T14976-2012 |
| Metal Quality | SS304/SS304L, SS316/SS316L |
| Size | OD:3-50.8mm, wall thickness: .5-4mm |
| Duration | 4m,6m or custom-made |
| Delivery Conditions | BA( EPT Annealed), Mechanical Polished, Electro-polished( EP) |
| Characteristics | EPT Annealed for finished tube, higher cleanness and high precision of within and exterior floor, very good mechanical properties, exceptional chilly bending capacity, high temperature resistant and anti-oxidation. We also supply polishing and pipe chopping support |
| Programs | Utilised in automobile Mobile: +86~13 0571 88828,precision instruments,hydraulic system, equipment,petroleum,chemical and gas area. |
| Packing | Plastic movie & Knitting Bundled, Plywood Case or as request |
| Shipping and delivery Time | 30-60days right after purchase verified |
2. Chemical Composition:
| Grade | C | Si | Mn | P | S | Cr | Ni |
| 304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | ≤18.-20. | ≤8.-10.5 |
| 304L | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | ≤18.-20. | ≤8.-10.five |
| Grade | C | Si | Mn | P | S | Cr | Ni | others |
| SUS316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.~18. | 10.~14. | Mo:2~3 |
| SUS316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | sixteen.~18. | 12.~fifteen. | Mo:2~three |
3. Mechanical Houses&Hardness:
| Quality | YS(Mpa) | TS(Mpa) | EL(%) | Hv |
| 304 | ≥205 | ≥520 | ≥40 | ≤200 |
| 304L | ≥175 | ≥480 | ≥40 | ≤200 |
| Quality | YS(Mpa) | TS(Mpa) | EL(%) | Hv |
| SUS316 | ≥205 | ≥520 | ≥40 | ≤200 |
| SUS316L | ≥175 | ≥480 | ≥40 | ≤200 |
4. Generation Movement Chart:
Crucial Techniques Descriptions:
Chilly Rolling
Tube rolling utilizes compression to lessen the dimension of seamless tubes. It utilizes one particular or two sets of rol EPT with
continuous cross-area grooves on the circumference of the tube. The rol EPT are pushed by rack and pinion gears
of diverse radii together profiled cams, finishing several 360º rotations about the tube
Tube rolling is a extremely precise approach of lowering very thin walled and/or scaled-down diameter tubes, and is often
utilized as the closing cold operating step. By rolling, we’re in a position to accomplish excellent management in excess of dimensional tolerances
and floor complete whilst also minimizing substance loss and improving the metal’s microstructure.
Chilly Drawing
Chilly drawing lowers the diameter by pulling the tube by means of a die that is more compact than the tube. In order to match
the tube into the die, one particular end is swaged thus decreasing the diameter of the top finish just before drawing.
Next, the narrowed conclude is handed via the die and clamped to a drawing trolley which pul EPT the tube via the die.
Annealing
Annealing is utilised to soften the metallic just before additional chilly working or fabrication procedures, and increases the
total metallurgical microstructure of the tube. During tube reduction or cold drawing, it can become difficult and
somewhat brittle. To be in a position to attract the tube yet again, stresses fashioned in the course of cold operating want to be taken off to
return the materials to its regular condition.
For the duration of annealing the tube is heated to a managed temperature and soak time. Via this method the tube
stays in condition, but the grains in the composition of the tube reform into a standard unstressed sample. The ensuing
annealed tube is softer and suited for redrawing
Straightening
Drawing and annealing generally results in some degree of bowing, producing a slight bend in the tubing. In buy to
make the tubes straight, we use multiple roll mechanical straighteners to implement this procedure, Straightening can
introduce slight adjustments to the size and mechanical homes of the tubing, so these factors are quite very carefully managed
during the procedure.
five. Inspection and Exams
We examine all tons of tubing ahead of shipment to make certain that every single element of the customer’s get has been fulfilled.
Our in-house inspection and checks capabilities consist of:
- Chemical Composition Take a look at
- Visible inspection
- Dimensional inspection
- Surface roughness screening
- Eddy Present tests
- Hydrostatic strain screening
- Harmful mechanical testing:
– Yield Power
– Tensile Toughness
– Elongation
– Hardness testing
– bending, flattening, and flaring
All shipments incorporate a total Te EPT Certificate demonstrating all required te EPT outcomes and verifying compliance with the get specifications.
6.Packing & Shipments
seven.Merchandise Measurement Assortment:
| OD | Tolerance(mm) | Interior Area Roughness | |||||
| Inch | mm | OD | WT | BA Tube | EPT Tube | ||
| 1 | ±0.05 | ±0.05 | ≤0.8μ | ||||
| 1 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |||
| 3/8 | 1 | one.24 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| one/two | one | 1.24 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| five/eight | one.24 | one.sixty five | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| three/4 | one.24 | 1.sixty five | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| one | 1.24 | one.65 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| three | .5 | ±0.05 | ±0.05 | ≤0.8μ | |||
| 4 | .seventy one | one | ±0.05 | ±0.05 | ≤0.8μ | ||
| 5 | 1 | ±0.05 | ±0.05 | ≤0.8μ | |||
| six | 1 | one.five | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| 8 | one | 1.5 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| ten | one | one.5 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| 12 | one | one.5 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| fourteen | one | 1.five | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| 15 | 1 | 1.five | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| sixteen | one | 1.five | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| 18 | one | 1.5 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
| twenty | one | 1.5 | ±0.05 | ±0.05 | ≤0.8μ | ≤0.4μ | |
If you have particular prerequisite about the tolerance of OD and WT, remember to check out with us.
8. Programs:
We – EPG Team the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing unit in China with 5 various branches. For far more specifics: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828 The use of first products manufacturer’s (OEM) portion figures or trademarks , e.g. CASE® and John Deere® are for reference needs only and for indicating item use and compatibility. Our business and the detailed substitution components contained herein are not sponsored, accredited, or made by the OEM.
