We – EPG Team the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing unit in China with 5 various branches. For more particulars: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828

1. Descriptions

Identify	304/316/321/409 stainless steel heat exchanger tubes
Specification	ASTM A213, ASTM A269, ASTM A312, EN15716-5, GB/T14976-2012
Steel Quality	SS304/SS304L, SS316/SS316L
Size	OD:3-fifty.8mm, wall thickness: .5-4mm
Length	4m,6m or personalized
Supply Situations	BA( EPT Annealed), Mechanical Polished, Electro-polished( EP)
Functions	EPT Annealed for concluded tube, large cleanness and higher precision of inside of and outside the house floor, very good mechanical houses, excellent chilly bending potential, substantial temperature resistant and anti-oxidation. We also give polishing and pipe reducing provider
Applications	Used in auto Mobile: +86~thirteen 0571 88828,precision devices,hydraulic technique, machinery,petroleum,chemical and fuel field.
Packing	Plastic film & Knitting Bundled, Plywood Scenario or as ask for
Shipping Time	30-60days after get confirmed

2. Chemical Composition:

Quality	C	Si	Mn	P	S	Cr	Ni
304	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	≤18.-20.	≤8.-10.five
304L	≤0.030	≤1.00	≤2.00	≤0.045	≤0.030	≤18.-20.	≤8.-ten.5

 

Quality	C	Si	Mn	P	S	Cr	Ni	other people
SUS316	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	16.~eighteen.	ten.~14.	Mo:2~3
SUS316L	≤0.03	≤1.00	≤2.00	≤0.045	≤0.030	16.~18.	12.~fifteen.	Mo:2~three

three. 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. Production Flow Chart:

Crucial Techniques Descriptions:
Chilly Rolling
Tube rolling employs compression to decrease the dimension of seamless tubes. It makes use of 1 or two sets of rol EPT with
constant cross-part grooves on the circumference of the tube. The rol EPT are pushed by rack and pinion gears
of distinct radii together profiled cams, finishing numerous 360º rotations close to the tube

Tube rolling is a quite specific method of lowering quite slender walled and/or scaled-down diameter tubes, and is frequently
utilized as the closing chilly doing work step. By rolling, we’re able to obtain exceptional management in excess of dimensional tolerances
and surface finish although also reducing content decline and improving the metal’s microstructure.

Chilly Drawing
Cold drawing decreases the diameter by pulling the tube by way of a die that is smaller sized than the tube. In order to match
the tube into the die, 1 finish is swaged therefore decreasing the diameter of the foremost end ahead of drawing.
Up coming, the narrowed conclude is handed via the die and clamped to a drawing trolley which pul EPT the tube through the die.

Annealing
Annealing is employed to soften the metal just before more chilly working or fabrication procedures, and enhances the
all round metallurgical microstructure of the tube. During tube reduction or chilly drawing, it can turn into hard and
relatively brittle. To be capable to attract the tube once again, stresses shaped throughout chilly operating require to be removed to
return the content to its normal condition.
In the course of annealing the tube is heated to a managed temperature and soak time. Through this method the tube
stays in shape, but the grains in the construction of the tube reform into a regular unstressed sample. The resulting
annealed tube is softer and appropriate for redrawing

Straightening
Drawing and annealing typically outcomes in some degree of bowing, creating a slight bend in the tubing. In get to
make the tubes straight, we use multiple roll mechanical straighteners to implement this method, Straightening can
introduce slight adjustments to the dimension and mechanical houses of the tubing, so these factors are very meticulously controlled
during the process.

5. Inspection and Checks
We examine all lots of tubing ahead of shipment to ensure that every facet of the customer’s order has been met.
Our in-residence inspection and checks capabilities incorporate:

• Chemical Composition Examination
• Visual inspection
• Dimensional inspection
• Surface roughness testing
• Eddy Existing testing
• Hydrostatic stress tests
• Destructive mechanical tests:

– Yield Power
– Tensile Toughness
– Elongation
– Hardness tests
– bending, flattening, and flaring
All shipments include a entire Te EPT Certification exhibiting all necessary te EPT outcomes and verifying compliance with the buy requirements.

6.Packing & Shipments

seven.Items Dimension Variety:

OD				Tolerance(mm)		Inner Area Roughness
Inch	mm			OD	WT	BA Tube	EPT Tube
			one	±0.05	±0.05	≤0.8μ
			1	±0.05	±0.05	≤0.8μ	≤0.4μ
three/eight		1	1.24	±0.05	±0.05	≤0.8μ	≤0.4μ
one/2		one	1.24	±0.05	±0.05	≤0.8μ	≤0.4μ
5/eight		one.24	1.65	±0.05	±0.05	≤0.8μ	≤0.4μ
three/four		one.24	1.65	±0.05	±0.05	≤0.8μ	≤0.4μ
1		one.24	1.65	±0.05	±0.05	≤0.8μ	≤0.4μ
	3	.five		±0.05	±0.05	≤0.8μ
	4	.seventy one	1	±0.05	±0.05	≤0.8μ
	5	one		±0.05	±0.05	≤0.8μ
	6	one	1.five	±0.05	±0.05	≤0.8μ	≤0.4μ
	eight	one	1.5	±0.05	±0.05	≤0.8μ	≤0.4μ
	10	one	one.five	±0.05	±0.05	≤0.8μ	≤0.4μ
	12	1	1.5	±0.05	±0.05	≤0.8μ	≤0.4μ
	14	one	one.five	±0.05	±0.05	≤0.8μ	≤0.4μ
	fifteen	one	one.5	±0.05	±0.05	≤0.8μ	≤0.4μ
	16	1	1.five	±0.05	±0.05	≤0.8μ	≤0.4μ
	18	1	1.five	±0.05	±0.05	≤0.8μ	≤0.4μ
	20	1	one.five	±0.05	±0.05	≤0.8μ	≤0.4μ

If you have unique necessity about the tolerance of OD and WT, remember to verify with us.

eight. Purposes:

 

We – EPG Team the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 diverse branches. For more specifics: Cell/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828 The use of unique tools manufacturer’s (OEM) portion quantities or trademarks , e.g. CASE® and John Deere® are for reference functions only and for indicating merchandise use and compatibility. Our business and the detailed substitution areas contained herein are not sponsored, authorized, or created by the OEM.