Product Details

♦WELCOME TO OUR FACTORY

we are the top 5 manufacturer of precision seamless steel tube in China ,we mainly produces all kinds of specifications cold finished seamless steel tube ,which are widely used in hydraulic cylinder ,automobile ,oil drilling ,engineering ,textil machinery ,and so on , company established in 1992 ,so we have more than 20 years experience in the steel tube world ,so welcome to our company to visiting and negotiate business .

♦ABOUT OUR PEODUCT

COMMODITY NAME : EN10305 Precision DIN2391 Cold-Drawn Hydraulic Cylinder Tube st52 steel tube

Production	Steel pipe / steel tube
Standard	DIN2391, EN10305, GB/T 3639, GB /8162 ASTM A519 ,A106 ,AISI 1020,4140
Inner Diameter	30mm~250mm
Wall Thickness	0.5mm~18mm
Material	10#~45#,16Mn,Q195~Q345,ST35~ST52
Length	as customers required
Surface treatment	As customers required
Package	1. bundle packing 2. marking as per customer's requests 3. paint on the pipe as per customer request 4. pipe caps as customer reques
Min Order Quantity	According to customer's requirement
Payment terms	L/C, T/T
Contact	If you have any questions, please feel free to contact me.
Delivery conditions	1. NBK(+N) after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium 2. GBK(+A) after cold forming, annealing in non oxidizing medium protective gas 3. BK(+C) the final heat treatment after cold forming, therefore small steel pipe plastic, the plastic degree does not guarantee 4. BKW(+LC) after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring) 5. BKS(+SR) have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

♦THE TOLERANCE OF DIMENSION

ID size

ID deviation (mm)

H10

+0.021

+0.033

+0.052

+0.084

>30~50

+0.025

+0.039

+0.062

+0.100

>50~80

+0.030

+0.046

+0.074

+0.120

>80~120

+0.035

+0.054

+0.087

+0.140

>120~180

+0.040

+0.063

+0.100

+0.160

>180~250

+0.046

+0.072

+0.115

+0.185

>250~315

+0.052

+0.081

+0.130

+0.210

>315~400

+0.0527

+0.089

+0.140

+0.230

CHEMICAL COMPOSITION

		C	Si	Mn	S	P	Cr
10#		0.07-0.13	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25
20#		0.17-0.23	0.17-0.37	0.35-0.65	≤0.035	≤0.035
35#		0.32-0.39	0.17-0.37	0.35-0.65	≤0.035	≤0.035
45#		Steel grade	Chemical composition(%)	0.50-0.80	≤0.035	≤0.035
Q345B/ST52		≤0.22	≤0.55	≤1.6	≤0.025	≤0.025	≤0.25
Advantages	1.Super quality
	2.Competitive price
	3.High daily output
	4.Good transportation
	5.Short delivery time
	6.Relevant certificates will be offered
	7.Manufacturer,Good after sales service

SOME PHOTOS ABOUT FACTORY AND PRODUCTS

♦PCKAGING AND SHIPPING

Packaging Detail:

1. bundle packing

2. marking as per customer's requests

3. paint on the pipe as per customer request

4. pipe caps as customer reques

Delivery Detail:

10days more, or according to the customer’s request

OUR SERVICES

1. cargo track service during transporting and feedback service after cargo is loaded on board

2. flexible terms of payment by T/T and L/C

3. big discount for repeat customer

4. smooth delivering procedure

OUR PROCESSING

OUR CERTIFICATE

APPLICATION

cold drawn seamless steel tube widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, the internal combustion engine, air compressor, construction machinery, forestry machinery, etc.

OUR TESTING

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

9.Impact Test (optional)

10.Grain Size Determinations (optional)

NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.