Product Details

ABOUT OUR COMPANY

we are the top 5 manufacturer of precision seamless steel tube in China ,we have more than 20 years experience in the steel tube world ,w mainly produces all kinds of specifications cold finished seamless steel tube ,which are widely used in hydraulic cylinder ,automobile ,oil drilling ,textil machinery ,engineering machinery .

ABOUT OUR PRODUCTS

st35,st52 cold drawn carbon seamless steel tube for engineering machinery

Cylinder ID Thickness	30-250mm 2-30mm
Standard	EN10305/DIN2391
	ASTM /AISI
	GB/T 8162/ 8163
Material	China	20# 45#(CK45) 16Mn(ST52) 25Mn 27SiMn etc.
	German	St42-2 DIN1626,St45-8 DIN17175,St45-4 DIN1629,CK45,St52 DIN1629
	American	ASTM A53-B,ASTM A106-B,ASTM A178-C,ASTM A1045,ASTM A210-C etc.
Length	as your requirements max: 14m/45.9feet
Surface treatment	Black painting, black varnish, transparent oil, or according to the customer’s acquirement
Technique	Seamless cold drawn /cold rolling /honing/skiving and roller
Usage	1.Hydraulic cylinder /pneumatic cylinder 2. Pumps 3.Motor shells 4.Transmission shafts 5.Transmission roller steel pipes 6.Casing Tube 7.Boiler pipe
Package	1. Bundle packing. 2. Bevelled end or plain end or warnished as your required. 3. Painting varnish coating on the pipe. 4. Plastic caps at ends.
MOQ Delivery time	as your needs within 25 days

Chemical composition of Material:

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

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

SOME DIMENSIONS

OD x WT	OD x WT	OD x WT	OD x WT
4*0.5	16*0.5	26*1.8	35*9.0
4*0.8	16*0.8	26*2.0	35*10
4*1.0	16*1.0	26*2.2	38*0.5
4*1.2	16*1.2	26*2.5	38*0.8
5*0.5	16*1.5	26*2.8	38*1.0
5*0.8	16*1.8	26*3.0	38*1.2
48*5.0	70*2.8	90*10	130*14
48*5.5	70*3.0	90*12	130*16
48*6.0	70*3.5	90*14	130*18
48*7.0	70*4.0	90*16	140*2.5
48*8.0	70*4.5	95*2.0	140*2.8
48*9.0	70*5.0	95*2.2	140*3.0

SOME PICTURE ABOUT OUR FACTORY

THE FINISHED PRODUCTS

THE PACKAGING AND SHIPPING

packaging details: standard packing with plastic caps and starpped bundles,standard wheight approx 1500Kg

delivery details: 15 days after receiving downpayment or L/C or as your request

OUR SERVICES

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

2. Flexible terms of payment by

3. Big discount for repeat customers

4. Smooth delivering procedure

5. Payment Terms: T/T , L/C And so on.

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.

OUR PROCESSING

OUR CERTIFICATE

FAQ

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