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Help CenterCompetitive Price Cold Finished Seamless China Precision Steel Tubing
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About our products
Commodity |
Competitive Price cold finished seamless china precision steel tubing |
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Items |
Seamless steel tube |
Cold drawn/rolled tube |
Honed tube |
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Length |
According to the customer’s need |
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Tolerance |
H8 H9,H10 or as customer’s need |
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Surface roughness |
Ra0.2-0.8µm |
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Standard |
Round pipe: GB/8163-2008, GB 8162-2008, ASTM A 106, DIN2391, 1 ASTMA519 |
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Grade |
Q345,10#-45#,ST35-ST52,16Mm |
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Application |
Hydraulic cylinder, automobile, oil drilling, textile machinery,etc. |
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Inspection |
With hydraulic testing, eddy current and infrared test. |
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Normal Seaworthy Packing
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1. Bundle packing. 2. Beveled end or plain end or varnished as per buyer's requests. 3. Marking: as per customer's requests. 4. Painting varnish coating on the pipe. 5. Plastic caps at ends or according to your request. |
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Delivery Time |
Less than 25days after the advanced payment |
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Payment Terms |
T/T or L/C |
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Outer diameter |
30-250mm |
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Finally condition |
BK BKS BKW NBK GBK |
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some dimension
40*50 |
90*110 |
140*170 |
190*215 |
40*55 |
95*110 |
145*170 |
190*220 |
50*60 |
95*115 |
150*170 |
190*225 |
50*65 |
100*110 |
150*175 |
200*220 |
55*70 |
100*114 |
150*180 |
200*225 |
60*70 |
100*115 |
155*180 |
200*230 |
60*75 |
100*120 |
160*175 |
200*245 |
60*78 |
100*125 |
160*180 |
200*250 |
63*73 |
105*125 |
160*185 |
220*250 |
63*75 |
110*125 |
160*190 |
220*270 |
63*76 |
110*130 |
160*195 |
225*250 |
63*78 |
115*130 |
165*190 |
240*273 |
65*80 |
115*135 |
165*205 |
250*290 |
70*80 |
120*140 |
170*200 |
250*300 |
70*82 |
125*140 |
180*200 |
260*300 |
70*85 |
125*145 |
180*205 |
280*323 |
70*90 |
125*150 |
180*210 |
280*355 |
75*90 |
130*150 |
180*215 |
300*350 |
80*92 |
130*155 |
180*220 |
200*213 |
80*95 |
130*160 |
185*205 |
200*216 |
80*100 |
135*160 |
185*215 |
250*266 |
85*100 |
140*160 |
185*220 |
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90*105 |
140*165 |
190*210 |
Chemical composition of Material:
Steel grade |
Chemical composition,% |
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C |
Si |
Mn |
P |
S |
Cr |
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≤ |
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St45 (20#) |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
0.25 |
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ST52(E355) |
≤0.22 |
≤0.55 |
≤1.6 |
0.025 |
0.025 |
0.25 |
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SAE1026 |
0.22-0.28 |
0.15-0.35 |
0.6-0.9 |
0.04 |
0.05 |
/ |
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STKM 13C |
≤0.25 |
≤0.35 |
0.3-0.9 |
0.04 |
0.04 |
/ |
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Q345B |
≤0.2 |
≤0.5 |
1.0-1.6 |
0.03 |
0.03 |
0.30 |
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CK45 |
0.42-0.50 |
0.17-0.37 |
0.5-0.8 |
0.035 |
0.035 |
0.25 |
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Mechanical Property of Material:
Delivery |
cold finished(hard)(BK) |
Cold drawn and stress-relieved(BK+S) |
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Steel grade |
Rm MPa |
Elongation |
Rm MPa |
ReH MPa |
Elonggation |
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 |
ABOUT OUR COMPANY
we are the top 5 manufacture of precision seamless steel tube in China ,and we have past ISO 90012008 verified certification ,our company mainly produces various specifications cold finished steel tube which are widely used in hydraulic cylinder ,automobile ,oil drilling ,engineering machinery ,and so on ,so welcome to our comay to visting and negotiate business .
our packaging and 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
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 processing
our certificate
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