Product Details

ABOUT OUR COMPANY :

we are the top 5 manufacture of precision seamless steel tube in China ,and we have passed ISO90012008 verified certificate ,our company mainly produces various specificaion cold finished seel tube which are widely used in hydraulic cylinder ,oil drilling,automobile ,textil machinery ,and so on .

Product Description

Description	2 inch cold drawn high precision steel tube for automotive parts
Standard	ASTM ,GB ,DIN, EN AISI etc
Material	10#-45#,16Mn,ST35-ST52,Q345
O.D	30mm-250mm
W.T	2mm-30mm
Length	According to the customer’s need
Surface/End	According to the customer’s request
Certificate	ISO9001 2008
Technique	Cold drawn /rolled ,hot rolled ,etc.
Surface	Polished, black, bright. or according to the customer’s acquirement
Application	Hydraulic cylinder , automobile, oil drilling etc.
Package	We usually bundle with steel strips ,branding parcel or wooden box outside or according to the customer’s need
Delivery Time	1.The products in stock will delivery immediately received the deposit 2.According to the order quantity, the delivery time ranges from ten days to twenty days

the chemical com[osition

Material	C	Si	Mn	S(≤)	P(≤)	Cr	Ni	Mo
C20#	0.17—0.23	0.17—0.37	0.35—0.65	0.035	0.035	≤0.25	≤0.30
CK45#	0.42—0.50	0.17—0.37	0.50—0.80	0.035	0.035	≤0.25	≤0.30
Q345B	≤0.20	≤0.55	1.00—1.60	0.040	0.040	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20
ST52 E355 16Mn	≤0.20	≤0.55	1.00—1.60	0.045	0.045	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20
25Mn	0.22—0.30	0.17—0.37	0.70—1.00	0.035	0.035	≤0.25	≤0.25
27SiMn	0.24—0.32	1.10—1.40	1.10—1.40	0.030	0.030
42SiMn	0.39—0.45	1.10—1.40	1.10—1.40	0.030	0.030
42CrMo	0.38—0.45	0.17—0.37	0.50—0.80	0.025	0.025	0.90—1.20		0.15—0.25

the mechanical of proerpty

Delivery condition	cold finished(hard)(BK)		Cold drawn and stress-relieved(BK+S)
Steel grade	Rm MPa	Elongation A5(%)	Rm MPa	ReH MPa	Elonggation A5(%)
St45	≥550	≥5	≥520	≥375	≥15
20#	≥550	≥8	≥520	≥375	≥15
St52 (E355)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥15
STKM 13C	≥550	≥8	≥520	≥375	≥15
Q345B	≥640	≥5	≥600	≥520	≥14
CK45	≥640	≥5	≥600	≥520	≥10

Packaging & Shipping

(1)Delivery time: In 20 days or according to client's requires

(2)Trade terms: EXW/FOB/CIF etc

(3)Payments: T/T or L/C or according to client's requires

(4)Port: Yantai or Qingdao

(5)MOQ: 5 metric tons or at customer's demands

(6)Packing: we usually bundle with steel strips ,branding parcel or wooden box outside ,or according to the customer’s acquirement

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.

our processing