Product Details

------- WELCOME TO OUR COMPANY -------

we are the top 5 manufacture of precision seamless steel tube in China ,we have passed ISO 90012008 verified certification ,our company mainly produces various specifications cold finished steel tube which are widely used in hydraulic cylinder ,automobile ,oil driling ,textil machinery and so on .if you are interested in our product welcome to our company to visting and negotiating .

--------OUR PRODUCT ------

Production	mild seamless hydraulic cylinder cold finished steel tube top quality
Standard	DIN 2391/EN 10305/GB/T8162/ASTM A519,etc.
Out Diameter	30mm-250mm
Wall Thickness	2mm-30mm
Material	10#-45#,st35-st52,q345,25Mn
Length	According to the customer’s acquirement
Surface treatment	According to the customer’s need
Technique	Seamless & welded
Usage	1. hydraulic cylinder 2. automobile 3. oil drilling 4.textil machinery 5. printing machinery 6. engineering machinery
Package	1. Bundle packing. 2. Bevelled end or plain end or warnished as per buyer's required. 3. Marking: as per customer's requests. 4. Painting varnish coating on the pipe. 5. Plastic caps at ends.
Supply	1. seamless steel pipe 2. cold drawn seamless steel tube 3. hydraulic cylinder steel tube 4. DOM tube 5. SRB/honed steel tube 6. hot rolled seamless steel tube 7. cold rolled seamless steel tube
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.

-------Mechanical Property of Material----

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

-----CHEMICAL COMPOSITION ---

Steel grade	Chemical composition,%
	C	Si	Mn	P	S	Cr

				≤
St45 (20#)	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.25
ST52(E355)	≤0.22	≤0.55	≤1.6	0.025	0.025	0.25
SAE1026	0.22-0.28	0.15-0.35	0.6-0.9	0.04	0.05	/
STKM 13C	≤0.25	≤0.35	0.3-0.9	0.04	0.04	/
Q345B	≤0.2	≤0.5	1.0-1.6	0.03	0.03	0.30
CK45	0.42-0.50	0.17-0.37	0.5-0.8	0.035	0.035	0.25